Talking to Matthew Garrett on irc he said that he thinks this may only be fixable via an UEFI change.
04:33 < ccheney> anyone know if it is possible to change a setting in LnkCap on a pci device? My pcie ports apparently have 'ASPM not supported' set and I need to turn it on somehow 04:33 < ccheney> its on a skylake system 04:35 < mjg59> ccheney: It's set by either the firmware or the chipset itself 04:35 < ccheney> the FADT doesn't have aspm disabled but its not enabled on the ports or the devices, setpci seems to be able to turn it on for LnkCtl but LnkCap seems to be overriding it? 04:35 < mjg59> lnkcap represents what the link is capable of 04:35 < ccheney> mjg59: is there anyway to force enable it afterwards via initrd (similar to acpi replacement tables) or something like that? 04:35 < mjg59> ccheney: Nope 04:35 < ccheney> ugh :( 04:35 < mjg59> Not that I know of -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1682711 Title: PCIe ASPM disabled even when enabled in FADT and pcie_aspm=force / setpci used Status in linux package in Ubuntu: Confirmed Bug description: This is somewhat similar in issue to lp#1377596. I have a "Lenovo ThinkCentre m900 Tiny" with an "Intel 600p" NVMe drive in it. As far as I can tell from dissembling the FADT PCIe ASPM is not set to disabled but the ports are not enabled in UEFI during boot. I also notice that the PCIe ASPM debug files are not in sysfs like they normally are ie: link_state I tried running the following manually but I think it must not be enough as the NVMe drive does not run any cooler as it does in a system with known working ASPM. setpci -s 00:1b.0 0x50.B=0x3 setpci -s 00:1c.0 0x50.B=0x3 setpci -s 01:00.0 0x80.B=0x3 setpci -s 02:00.0 0x50.B=0x3 I noticed via lspci that the root ports say ASPM not supported even though the FADT doesn't have them disabled. Is that the reason its still not working and how do I work around that issue? Also is there something specific I can tell Lenovo to do to fix this issue on their end, if it can't be worked around in Linux? I have an open case with them via the UEFI engineering team but so far its been slow going since I don't have anything concrete to tell them to fix. === 00:1b.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Root Port #17 (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 A routed to IRQ 122 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000f000-00000fff Memory behind bridge: df100000-df1fffff 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 #17, Speed 8GT/s, Width x4, ASPM not supported, Exit Latency L0s <1us, L1 <16us ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+ LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt- SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise- Slot #0, 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: fee00218 Data: 0000 Capabilities: [90] Subsystem: Lenovo Sunrise Point-H PCI 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 ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-19-generic 4.10.0-19.21 ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8 Uname: Linux 4.10.0-19-generic x86_64 ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: Cannot stat file /proc/2050/fd/24: Stale file handle Cannot stat file /proc/2050/fd/25: Stale file handle USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu-mate 2046 F.... pulseaudio CasperVersion: 1.380 Date: Fri Apr 14 04:10:41 2017 LiveMediaBuild: Ubuntu-MATE 17.04 "Zesty Zapus" - Release amd64 (20170412) MachineType: LENOVO 10FMCTO ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi debug ignore_loglevel pcie_aspm.policy=powersave pcie_aspm=force file=/cdrom/preseed/hostname.seed boot=casper quiet splash --- PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.10.0-19-generic N/A linux-backports-modules-4.10.0-19-generic N/A linux-firmware 1.164 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/07/2017 dmi.bios.vendor: LENOVO dmi.bios.version: FWKT6CA dmi.board.name: 30D0 dmi.board.vendor: LENOVO dmi.board.version: SDK0K17763 WIN 1801925111491 dmi.chassis.type: 3 dmi.chassis.vendor: LENOVO dmi.chassis.version: Default string dmi.modalias: dmi:bvnLENOVO:bvrFWKT6CA:bd03/07/2017:svnLENOVO:pn10FMCTO:pvrLenovoProduct:rvnLENOVO:rn30D0:rvrSDK0K17763WIN1801925111491:cvnLENOVO:ct3:cvrDefaultstring: dmi.product.name: 10FMCTO dmi.product.version: Lenovo Product dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682711/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
