First I want to say thanks again for all the help!


GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"



sudo uname -r
4.15.0-rc4+ (kernel from #13)



sudo nvme get-feature -f 0x0c -H /dev/nvme0
get-feature:0xc (Autonomous Power State Transition), Current value:00000000
        Autonomous Power State Transition Enable (APSTE): Disabled
        Auto PST Entries        .................
        Entry[ 0]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 1]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 2]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 3]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 4]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 5]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 6]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 7]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 8]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 9]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[10]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[11]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[12]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[13]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[14]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[15]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[16]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[17]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[18]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[19]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[20]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[21]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[22]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[23]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[24]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[25]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[26]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[27]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[28]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[29]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[30]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[31]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................



sudo lspci -vvv
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor 
Host Bridge/DRAM Registers (rev 02)
        Subsystem: Lenovo Xeon E3-1200 v6/7th Gen Core Processor Host 
Bridge/DRAM Registers
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ >SERR- <PERR- INTx-
        Latency: 0
        Capabilities: [e0] Vendor Specific Information: Len=10 <?>

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02) 
(prog-if 00 [VGA controller])
        Subsystem: Lenovo HD Graphics 620
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 128
        Region 0: Memory at eb000000 (64-bit, non-prefetchable) [size=16M]
        Region 2: Memory at a0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at e000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [40] Vendor Specific Information: Len=0c <?>
        Capabilities: [70] Express (v2) Root Complex Integrated Endpoint, MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0
                        ExtTag- RBE+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- 
TransPend-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis-, LTR-, 
OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, 
OBFF Disabled
        Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee00018  Data: 0000
        Capabilities: [d0] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [100 v1] Process Address Space ID (PASID)
                PASIDCap: Exec- Priv-, Max PASID Width: 14
                PASIDCtl: Enable- Exec- Priv-
        Capabilities: [200 v1] Address Translation Service (ATS)
                ATSCap: Invalidate Queue Depth: 00
                ATSCtl: Enable-, Smallest Translation Unit: 00
        Capabilities: [300 v1] Page Request Interface (PRI)
                PRICtl: Enable- Reset-
                PRISta: RF- UPRGI- Stopped+
                Page Request Capacity: 00008000, Page Request Allocation: 
00000000
        Kernel driver in use: i915
        Kernel modules: i915

00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI 
Controller (rev 21) (prog-if 30 [XHCI])
        Subsystem: Lenovo Sunrise Point-LP USB 3.0 xHCI Controller
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 123
        Region 0: Memory at ec220000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [70] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA 
PME(D0-,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
                Address: 00000000fee00258  Data: 0000
        Kernel driver in use: xhci_hcd

00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP 
Thermal subsystem (rev 21)
        Subsystem: Lenovo Sunrise Point-LP Thermal subsystem
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Interrupt: pin C routed to IRQ 18
        Region 0: Memory at ec248000 (64-bit, non-prefetchable) [size=4K]
        Capabilities: [50] Power Management version 3
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Kernel driver in use: intel_pch_thermal
        Kernel modules: intel_pch_thermal

00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI 
#1 (rev 21)
        Subsystem: Lenovo Sunrise Point-LP CSME HECI
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 129
        Region 0: Memory at ec249000 (64-bit, non-prefetchable) [size=4K]
        Capabilities: [50] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot+,D3cold-)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee002f8  Data: 0000
        Kernel driver in use: mei_me
        Kernel modules: mei_me

00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port 
(rev f1) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 16
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: 00002000-00002fff
        Memory behind bridge: 9c800000-9c9fffff
        Prefetchable memory behind bridge: 000000009ca00000-000000009cbfffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0
                        ExtTag- RBE+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
TransPend-
                LnkCap: Port #1, Speed 8GT/s, Width x4, ASPM L0s L1, Exit 
Latency L0s unlimited, L1 <4us
                        ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ 
DLActive- BWMgmt- ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ 
Surprise+
                        Slot #0, PowerLimit 0.000W; Interlock- NoCompl+
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- 
LinkChg-
                        Control: AttnInd Unknown, PwrInd Unknown, Power- 
Interlock-
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- 
Interlock-
                        Changed: MRL- PresDet- LinkState-
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- 
CRSVisible-
                RootCap: CRSVisible-
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
                DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF 
Via WAKE# ARIFwd+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, 
OBFF Disabled ARIFwd-
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, 
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB, 
EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, 
LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: Lenovo Sunrise Point-LP PCI Express Root 
Port
        Capabilities: [a0] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1c.6 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #7 
(rev f1) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin C routed to IRQ 18
        Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: ec100000-ec1fffff
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0
                        ExtTag- RBE+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
TransPend-
                LnkCap: Port #7, Speed 8GT/s, Width x1, ASPM L0s L1, Exit 
Latency L0s <1us, L1 <16us
                        ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
                LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ 
DLActive+ BWMgmt+ ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- 
Surprise-
                        Slot #6, PowerLimit 10.000W; Interlock- NoCompl+
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- 
LinkChg-
                        Control: AttnInd Unknown, PwrInd Unknown, Power- 
Interlock-
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ 
Interlock-
                        Changed: MRL- PresDet+ LinkState+
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- 
CRSVisible-
                RootCap: CRSVisible-
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
                DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF 
Not Supported ARIFwd+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, 
OBFF Disabled ARIFwd-
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, 
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB, 
EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, 
LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: Lenovo Sunrise Point-LP PCI Express Root 
Port
        Capabilities: [a0] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt+ 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
        Capabilities: [140 v1] Access Control Services
                ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd- 
EgressCtrl- DirectTrans-
                ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- 
EgressCtrl- DirectTrans-
        Capabilities: [200 v1] L1 PM Substates
                L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ 
L1_PM_Substates+
                          PortCommonModeRestoreTime=40us PortTPowerOnTime=44us
                L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
                           T_CommonMode=40us LTR1.2_Threshold=163840ns
                L1SubCtl2: T_PwrOn=60us
        Capabilities: [220 v1] #19
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 
(rev f1) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 16
        Bus: primary=00, secondary=05, subordinate=3d, sec-latency=0
        I/O behind bridge: 00003000-00003fff
        Memory behind bridge: d4000000-ea0fffff
        Prefetchable memory behind bridge: 00000000b0000000-00000000d1ffffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0
                        ExtTag- RBE+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
TransPend-
                LnkCap: Port #9, Speed 8GT/s, Width x2, ASPM not supported, 
Exit Latency L0s unlimited, L1 <16us
                        ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ 
DLActive- BWMgmt- ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ 
Surprise+
                        Slot #8, PowerLimit 25.000W; Interlock- NoCompl+
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- 
LinkChg-
                        Control: AttnInd Unknown, PwrInd Unknown, Power- 
Interlock-
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- 
Interlock-
                        Changed: MRL- PresDet- LinkState-
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- 
CRSVisible-
                RootCap: CRSVisible-
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
                DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF 
Not Supported ARIFwd+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, 
OBFF Disabled ARIFwd-
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, 
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB, 
EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, 
LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: Lenovo Sunrise Point-LP PCI Express Root 
Port
        Capabilities: [a0] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO+ CmpltAbrt- UnxCmplt+ 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
        Capabilities: [140 v1] Access Control Services
                ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd- 
EgressCtrl- DirectTrans-
                ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- 
EgressCtrl- DirectTrans-
        Capabilities: [220 v1] #19
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1d.2 PCI bridge: Intel Corporation Device 9d1a (rev f1) (prog-if 00 [Normal 
decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin C routed to IRQ 18
        Bus: primary=00, secondary=3e, subordinate=3e, sec-latency=0
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: ec000000-ec0fffff
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0
                        ExtTag- RBE+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 256 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
TransPend-
                LnkCap: Port #11, Speed 8GT/s, Width x2, ASPM L1, Exit Latency 
L0s <1us, L1 <16us
                        ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
                LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 8GT/s, Width x2, TrErr- Train+ SlotClk+ DLActive+ 
BWMgmt+ ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- 
Surprise-
                        Slot #10, PowerLimit 25.000W; Interlock- NoCompl+
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- 
LinkChg-
                        Control: AttnInd Unknown, PwrInd Unknown, Power- 
Interlock-
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ 
Interlock-
                        Changed: MRL- PresDet- LinkState+
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- 
CRSVisible-
                RootCap: CRSVisible-
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
                DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF 
Not Supported ARIFwd+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, 
OBFF Disabled ARIFwd-
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, 
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB, 
EqualizationComplete+, EqualizationPhase1+
                         EqualizationPhase2-, EqualizationPhase3-, 
LinkEqualizationRequest+
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: Lenovo Device 2245
        Capabilities: [a0] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt+ 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover+ Timeout+ NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
        Capabilities: [140 v1] Access Control Services
                ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd- 
EgressCtrl- DirectTrans-
                ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- 
EgressCtrl- DirectTrans-
        Capabilities: [220 v1] #19
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
        Subsystem: Lenovo Sunrise Point-LP LPC Controller
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
        Subsystem: Lenovo Sunrise Point-LP PMC
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Region 0: Memory at ec244000 (32-bit, non-prefetchable) [size=16K]
        Kernel driver in use: intel_pmc_core

00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
        Subsystem: Lenovo Device 2245
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 64
        Interrupt: pin A routed to IRQ 131
        Region 0: Memory at ec240000 (64-bit, non-prefetchable) [size=16K]
        Region 4: Memory at ec230000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [50] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA 
PME(D0-,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee00338  Data: 0000
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
        Subsystem: Lenovo Sunrise Point-LP SMBus
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 255
        Region 0: Memory at ec24a000 (64-bit, non-prefetchable) [disabled] 
[size=256]
        Region 4: I/O ports at efa0 [disabled] [size=32]
        Kernel modules: i2c_i801

00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (4) I219-V 
(rev 21)
        Subsystem: Lenovo Ethernet Connection (4) I219-V
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 124
        Region 0: Memory at ec200000 (32-bit, non-prefetchable) [size=128K]
        Capabilities: [c8] Power Management version 3
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee00278  Data: 0000
        Capabilities: [e0] PCI Advanced Features
                AFCap: TP+ FLR+
                AFCtrl: FLR-
                AFStatus: TP-
        Kernel driver in use: e1000e
        Kernel modules: e1000e

04:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
        Subsystem: Intel Corporation Wireless 8265 / 8275
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 130
        Region 0: Memory at ec100000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [c8] Power Management version 3
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee00318  Data: 0000
        Capabilities: [40] Express (v2) Endpoint, MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, 
L1 unlimited
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ 
SlotPowerLimit 0.000W
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ 
TransPend-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L1, Exit Latency 
L0s <4us, L1 <8us
                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
                LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
                        ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ 
DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF 
Via WAKE#
                DevCtl2: Completion Timeout: 16ms to 55ms, TimeoutDis-, LTR+, 
OBFF Disabled
                LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, 
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB, 
EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, 
LinkEqualizationRequest-
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
        Capabilities: [140 v1] Device Serial Number 60-f6-77-ff-ff-9a-f8-35
        Capabilities: [14c v1] Latency Tolerance Reporting
                Max snoop latency: 3145728ns
                Max no snoop latency: 3145728ns
        Capabilities: [154 v1] L1 PM Substates
                L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ 
L1_PM_Substates+
                          PortCommonModeRestoreTime=30us PortTPowerOnTime=18us
                L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
                           T_CommonMode=0us LTR1.2_Threshold=163840ns
                L1SubCtl2: T_PwrOn=60us
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

3e:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD 
Controller SM961/PM961 (prog-if 02 [NVM Express])
        Subsystem: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 18
        NUMA node: 0
        Region 0: Memory at ec000000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [50] MSI: Enable- Count=1/32 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s 
unlimited, L1 unlimited
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ 
SlotPowerLimit 25.000W
                DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ 
Unsupported+
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
                        MaxPayload 256 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
TransPend-
                LnkCap: Port #0, Speed 8GT/s, Width x4, ASPM L1, Exit Latency 
L0s unlimited, L1 <64us
                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
                LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
                        ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 8GT/s, Width x2, TrErr- Train- SlotClk+ DLActive- 
BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, 
OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, 
OBFF Disabled
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, 
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -6dB, 
EqualizationComplete+, EqualizationPhase1+
                         EqualizationPhase2-, EqualizationPhase3-, 
LinkEqualizationRequest-
        Capabilities: [b0] MSI-X: Enable+ Count=33 Masked-
                Vector table: BAR=0 offset=00003000
                PBA: BAR=0 offset=00002000
        Capabilities: [100 v2] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- 
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr+ BadTLP+ BadDLLP+ Rollover+ Timeout+ NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Capabilities: [148 v1] Device Serial Number 00-00-00-00-00-00-00-00
        Capabilities: [158 v1] Power Budgeting <?>
        Capabilities: [168 v1] #19
        Capabilities: [188 v1] Latency Tolerance Reporting
                Max snoop latency: 3145728ns
                Max no snoop latency: 3145728ns
        Capabilities: [190 v1] L1 PM Substates
                L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ 
L1_PM_Substates+
                          PortCommonModeRestoreTime=10us PortTPowerOnTime=10us
                L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
                           T_CommonMode=0us LTR1.2_Threshold=0ns
                L1SubCtl2: T_PwrOn=44us
        Kernel driver in use: nvme

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https://bugs.launchpad.net/bugs/1737934

Title:
  Samsung SM961 NVMe SSD randomly unmounts/loses connection/unavailable

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Seems related to these bugs:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184
  https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1682704
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705748

  Problem:
  At seemingly random times my computer (brand new Lenovo Thinkpad T470) seems 
to lose access to the Samsung SM961 256GB SSD drive it has inside. When this 
happens the whole OS freezes up and when I try to power down I see a black 
terminal-like screen that prints the following errors:

  EXT4-fs error (device nvme0n1p2): ext4_find_entry:1431: inode #7471275
  (or #741278): comm gmain (or systemd-journal or ...): reading
  directory iblock 0

  This error seems to be repeated endlessly, though I've only let it go
  for a few minutes. No other errors are printed.

  This is the only drive it has.
  I don't know if this occurs in Windows too since I removed Windows and 
installed Ubuntu immediatly after updating the BIOS.

  Info:
  Distro: Ubuntu MATE 17.10

  sudo uname -r
  4.13.0-19-generic

  sudo nvme get-feature -f 0x0c -H /dev/nvme0 (with latency set to 250)
  get-feature:0xc (Autonomous Power State Transition), Current value:0x000001
        Autonomous Power State Transition Enable (APSTE): Enabled
        Auto PST Entries        .................
        Entry[ 0]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 1]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 2]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 3]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 4]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 5]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 6]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 7]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 8]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[ 9]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[10]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[11]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[12]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[13]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[14]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[15]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[16]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[17]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[18]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[19]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[20]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[21]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[22]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[23]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[24]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[25]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[26]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[27]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[28]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[29]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[30]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................
        Entry[31]   
        .................
        Idle Time Prior to Transition (ITPT): 0 ms
        Idle Transition Power State   (ITPS): 0
        .................

  sudo smartctl -a /dev/nvme0
  smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.13.0-19-generic] (local build)
  Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

  === START OF INFORMATION SECTION ===
  Model Number:                       SAMSUNG MZVLW256HEHP-000L7
  Serial Number:                      S35ENX0JA13385
  Firmware Version:                   4L7QCXB7
  PCI Vendor/Subsystem ID:            0x144d
  IEEE OUI Identifier:                0x002538
  Total NVM Capacity:                 256.060.514.304 [256 GB]
  Unallocated NVM Capacity:           0
  Controller ID:                      2
  Number of Namespaces:               1
  Namespace 1 Size/Capacity:          256.060.514.304 [256 GB]
  Namespace 1 Utilization:            17.834.708.992 [17,8 GB]
  Namespace 1 Formatted LBA Size:     512
  Local Time is:                      Wed Dec 13 10:52:39 2017 CET
  Firmware Updates (0x16):            3 Slots, no Reset required
  Optional Admin Commands (0x0017):   Security Format Frmw_DL *Other*
  Optional NVM Commands (0x001f):     Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat
  Warning  Comp. Temp. Threshold:     69 Celsius
  Critical Comp. Temp. Threshold:     72 Celsius

  Supported Power States
  St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
   0 +     7.60W       -        -    0  0  0  0        0       0
   1 +     6.00W       -        -    1  1  1  1        0       0
   2 +     5.10W       -        -    2  2  2  2        0       0
   3 -   0.0400W       -        -    3  3  3  3      210    1500
   4 -   0.0050W       -        -    4  4  4  4     2200    6000

  Supported LBA Sizes (NSID 0x1)
  Id Fmt  Data  Metadt  Rel_Perf
   0 +     512       0         0

  === START OF SMART DATA SECTION ===
  SMART overall-health self-assessment test result: PASSED

  SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff)
  Critical Warning:                   0x00
  Temperature:                        35 Celsius
  Available Spare:                    100%
  Available Spare Threshold:          10%
  Percentage Used:                    0%
  Data Units Read:                    151.517 [77,5 GB]
  Data Units Written:                 160.733 [82,2 GB]
  Host Read Commands:                 1.874.938
  Host Write Commands:                1.650.810
  Controller Busy Time:               10
  Power Cycles:                       96
  Power On Hours:                     14
  Unsafe Shutdowns:                   78
  Media and Data Integrity Errors:    0
  Error Information Log Entries:      38
  Warning  Comp. Temperature Time:    0
  Critical Comp. Temperature Time:    0
  Temperature Sensor 1:               35 Celsius
  Temperature Sensor 2:               61 Celsius

  Error Information (NVMe Log 0x01, max 64 entries)
  Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID    VS
    0         38     0  0x0018  0x4004  0x02c            0     0     -
    1         37     0  0x0017  0x4004  0x02c            0     0     -
    2         36     0  0x0018  0x4004  0x02c            0     0     -
    3         35     0  0x0017  0x4004  0x02c            0     0     -
    4         34     0  0x0018  0x4004  0x02c            0     0     -
    5         33     0  0x0017  0x4004  0x02c            0     0     -
    6         32     0  0x0018  0x4004  0x02c            0     0     -
    7         31     0  0x0017  0x4004  0x02c            0     0     -
    8         30     0  0x0018  0x4004  0x02c            0     0     -
    9         29     0  0x0017  0x4004  0x02c            0     0     -
   10         28     0  0x0018  0x4004  0x02c            0     0     -
   11         27     0  0x0017  0x4004  0x02c            0     0     -
   12         26     0  0x0018  0x4004  0x02c            0     0     -
   13         25     0  0x0017  0x4004  0x02c            0     0     -
   14         24     0  0x0018  0x4004  0x02c            0     0     -
   15         23     0  0x0017  0x4004  0x02c            0     0     -
  ... (22 entries not shown)

  
  lspci -nn
  00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core 
Processor Host Bridge/DRAM Registers [8086:5904] (rev 02)
  00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620 
[8086:5916] (rev 02)
  00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 
xHCI Controller [8086:9d2f] (rev 21)
  00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise 
Point-LP Thermal subsystem [8086:9d31] (rev 21)
  00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP 
CSME HECI #1 [8086:9d3a] (rev 21)
  00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express 
Root Port [8086:9d10] (rev f1)
  00:1c.6 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express 
Root Port #7 [8086:9d16] (rev f1)
  00:1d.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express 
Root Port #9 [8086:9d18] (rev f1)
  00:1d.2 PCI bridge [0604]: Intel Corporation Device [8086:9d1a] (rev f1)
  00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-LP LPC Controller 
[8086:9d58] (rev 21)
  00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC 
[8086:9d21] (rev 21)
  00:1f.3 Audio device [0403]: Intel Corporation Device [8086:9d71] (rev 21)
  00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] 
(rev 21)
  00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (4) 
I219-V [8086:15d8] (rev 21)
  04:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 
[8086:24fd] (rev 78)
  3e:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd 
NVMe SSD Controller SM961/PM961 [144d:a804]

  sudo nvme list
  Node             SN                   Model                                   
 Namespace Usage                      Format           FW Rev  
  ---------------- -------------------- 
---------------------------------------- --------- -------------------------- 
---------------- --------
  /dev/nvme0n1     S35ENX0JA13385       SAMSUNG MZVLW256HEHP-000L7              
 1          17,83  GB / 256,06  GB    512   B +  0 B   4L7QCXB7

  I tried looking for kernel errors with dmesg | grep -i nvme and dmesg
  | grep -i EXT4-fs, but nothing of value shows up (only that the drive
  was mounted).

  What have I tried:
  Reading the bug reports mentioned above it seemed that my problem should 
already be fixed since I'm on kernel 4.13.
  Since I still have the problem, I should be able to temporarily fix it by 
setting 
  GRUB_CMDLINE_LINUX_DEFAULT="nvme_core.default_ps_max_latency_us=0"
  and running sudo update-grub.
  This doesn't help however, since I still get random loss of connection to the 
drive. Sometimes this happens after minutes of booting, sometimes after hours, 
but I haven't been able to run stable for a full day.
  I have tried all values for the latency I found in various bug reports 
online, specifically I tried: 0, 250, 5500, 6000 and 11000. It seems to run 
most stable with 250 and least stable with 0, where the error happens 
seconds/minutes after boot.

  I'm at my wits' end here. I could just stick a normal SATA SSD in there but 
then this brand new one would be a waste. Any help would be greatly appreciated.
  If more info is needed I'll do my best to provide it.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.13.0-19-generic 4.13.0-19.22
  ProcVersionSignature: Ubuntu 4.13.0-19.22-generic 4.13.13
  Uname: Linux 4.13.0-19-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  musilitar   1334 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Wed Dec 13 11:11:54 2017
  InstallationDate: Installed on 2017-12-07 (5 days ago)
  InstallationMedia: Ubuntu-MATE 17.10 "Artful Aardvark" - Release amd64 
(20171018)
  MachineType: LENOVO 20HD0001MB
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-19-generic.efi.signed 
root=UUID=99902074-7315-4905-8a7d-97b65a09bb74 ro quiet splash 
nvme_core.default_ps_max_latency_us=250 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.13.0-19-generic N/A
   linux-backports-modules-4.13.0-19-generic  N/A
   linux-firmware                             1.169.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/10/2017
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N1QET68W (1.43 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20HD0001MB
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN1QET68W(1.43):bd11/10/2017:svnLENOVO:pn20HD0001MB:pvrThinkPadT470:rvnLENOVO:rn20HD0001MB:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad T470
  dmi.product.name: 20HD0001MB
  dmi.product.version: ThinkPad T470
  dmi.sys.vendor: LENOVO

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