I have it too: (random hangups of whole system either under load/idle)
- Ryzen5 2400 G
- Ubuntu 18.04
- kernel 4.18

$ sudo lshw -c video
  *-display                 
       description: VGA compatible controller
       product: Advanced Micro Devices, Inc. [AMD/ATI]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:0b:00.0
       version: c6
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix vga_controller bus_master cap_list 
rom
       configuration: driver=amdgpu latency=0
       resources: irq:88 memory:e0000000-efffffff memory:f0000000-f01fffff 
ioport:d000(size=256) memory:fe300000-fe37ffff memory:c0000-dfff

$ $ lspci -v
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15d0
        Subsystem: ASUSTeK Computer Inc. Device 876b
        Flags: fast devsel

00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 15d1
        Subsystem: Advanced Micro Devices, Inc. [AMD] Device 15d1
        Flags: bus master, fast devsel, latency 0, IRQ 27
        Capabilities: <access denied>

00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 
00h-0fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15d3 (prog-if 00 
[Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 28
        Bus: primary=00, secondary=01, subordinate=09, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: fe400000-fe7fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:01.6 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15d3 (prog-if 00 
[Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 29
        Bus: primary=00, secondary=0a, subordinate=0a, sec-latency=0
        Memory behind bridge: fe900000-fe9fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 
00h-0fh) PCIe Dummy Host Bridge
        Flags: fast devsel

00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15db (prog-if 00 
[Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 26
        Bus: primary=00, secondary=0b, subordinate=0b, sec-latency=0
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: fe000000-fe3fffff
        Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15dc (prog-if 00 
[Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 26
        Bus: primary=00, secondary=0c, subordinate=0c, sec-latency=0
        Memory behind bridge: fe800000-fe8fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)
        Subsystem: ASUSTeK Computer Inc. FCH SMBus Controller
        Flags: 66MHz, medium devsel
        Kernel driver in use: piix4_smbus
        Kernel modules: i2c_piix4, sp5100_tco

00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
        Subsystem: ASUSTeK Computer Inc. FCH LPC Bridge
        Flags: bus master, 66MHz, medium devsel, latency 0

00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15e8
        Flags: fast devsel

00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15e9
        Flags: fast devsel

00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ea
        Flags: fast devsel

00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15eb
        Flags: fast devsel
        Kernel driver in use: k10temp
        Kernel modules: k10temp

00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ec
        Flags: fast devsel

00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ed
        Flags: fast devsel

00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ee
        Flags: fast devsel

00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ef
        Flags: fast devsel

01:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43d0 (rev 01) 
(prog-if 30 [XHCI])
        Subsystem: ASMedia Technology Inc. Device 1142
        Flags: bus master, fast devsel, latency 0, IRQ 42
        Memory at fe7a0000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd

01:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] Device 43c8 (rev 
01) (prog-if 01 [AHCI 1.0])
        Subsystem: ASMedia Technology Inc. Device 1062
        Flags: bus master, fast devsel, latency 0, IRQ 85
        Memory at fe780000 (32-bit, non-prefetchable) [size=128K]
        Expansion ROM at fe700000 [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: ahci
        Kernel modules: ahci

01:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c6 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 30
        Bus: primary=01, secondary=02, subordinate=09, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: fe400000-fe6fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 31
        Bus: primary=02, secondary=03, subordinate=03, sec-latency=0
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 32
        Bus: primary=02, secondary=04, subordinate=04, sec-latency=0
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:03.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 34
        Bus: primary=02, secondary=05, subordinate=05, sec-latency=0
        Memory behind bridge: fe600000-fe6fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 35
        Bus: primary=02, secondary=06, subordinate=06, sec-latency=0
        Memory behind bridge: fe500000-fe5fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 36
        Bus: primary=02, secondary=07, subordinate=07, sec-latency=0
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 37
        Bus: primary=02, secondary=08, subordinate=08, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: fe400000-fe4fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

02:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43c7 (rev 01) 
(prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 39
        Bus: primary=02, secondary=09, subordinate=09, sec-latency=0
        Capabilities: <access denied>
        Kernel driver in use: pcieport

05:00.0 Network controller: Intel Corporation Wireless 8260 (rev 3a)
        Subsystem: Intel Corporation Dual Band Wireless-AC 8260
        Flags: bus master, fast devsel, latency 0, IRQ 94
        Memory at fe600000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: <access denied>
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

06:00.0 USB controller: ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller 
(prog-if 30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. ASM1142 USB 3.1 Host Controller
        Flags: bus master, fast devsel, latency 0, IRQ 25
        Memory at fe500000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd

08:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection 
(rev 03)
        Subsystem: ASUSTeK Computer Inc. I211 Gigabit Network Connection
        Flags: bus master, fast devsel, latency 0, IRQ 33
        Memory at fe400000 (32-bit, non-prefetchable) [size=128K]
        I/O ports at e000 [size=32]
        Memory at fe420000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: igb
        Kernel modules: igb

0a:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a808 
(prog-if 02 [NVM Express])
        Subsystem: Samsung Electronics Co Ltd Device a801
        Flags: bus master, fast devsel, latency 0, IRQ 40, NUMA node 0
        Memory at fe900000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: nvme

0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Vega 
[Radeon Vega 8 Mobile] (rev c6) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Vega [Radeon Vega 8 Mobile]
        Flags: bus master, fast devsel, latency 0, IRQ 88
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Memory at f0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at d000 [size=256]
        Memory at fe300000 (32-bit, non-prefetchable) [size=512K]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

0b:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 15de
        Subsystem: ASUSTeK Computer Inc. Device 876b
        Flags: bus master, fast devsel, latency 0, IRQ 96
        Memory at fe388000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

0b:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Device 15df
        Subsystem: Advanced Micro Devices, Inc. [AMD] Device 15df
        Flags: bus master, fast devsel, latency 0, IRQ 15
        Memory at fe200000 (32-bit, non-prefetchable) [size=1M]
        Memory at fe38c000 (32-bit, non-prefetchable) [size=8K]
        Capabilities: <access denied>

0b:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15e0 (prog-if 
30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. Device 876b
        Flags: bus master, fast devsel, latency 0, IRQ 51
        Memory at fe100000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd

0b:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15e1 (prog-if 
30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. Device 876b
        Flags: bus master, fast devsel, latency 0, IRQ 60
        Memory at fe000000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd

0b:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Device 15e3
        Subsystem: ASUSTeK Computer Inc. Device 8733
        Flags: bus master, fast devsel, latency 0, IRQ 97
        Memory at fe380000 (32-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

0c:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller 
[AHCI mode] (rev 61) (prog-if 01 [AHCI 1.0])
        Subsystem: ASUSTeK Computer Inc. FCH SATA Controller [AHCI mode]
        Flags: bus master, fast devsel, latency 0, IRQ 87
        Memory at fe800000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <access denied>
        Kernel driver in use: ahci
        Kernel modules: ahci


$ uname -a
Linux elrond 4.18.20-041820-generic #201812030624 SMP Mon Dec 3 11:25:55 UTC 
2018 x86_64 x86_64 x86_64 GNU/Linux

$ dmesg | grep drm
[    1.641459] [drm] amdgpu kernel modesetting enabled.
[    1.645616] fb: switching to amdgpudrmfb from EFI VGA
[    1.645835] [drm] initializing kernel modesetting (RAVEN 0x1002:0x15DD 
0x1043:0x876B 0xC6).
[    1.645844] [drm] register mmio base: 0xFE300000
[    1.645845] [drm] register mmio size: 524288
[    1.645851] [drm] probing gen 2 caps for device 1022:15db = 700d03/e
[    1.645853] [drm] probing mlw for device 1022:15db = 700d03
[    1.645855] [drm] add ip block number 0 <soc15_common>
[    1.645856] [drm] add ip block number 1 <gmc_v9_0>
[    1.645856] [drm] add ip block number 2 <vega10_ih>
[    1.645857] [drm] add ip block number 3 <psp>
[    1.645857] [drm] add ip block number 4 <powerplay>
[    1.645858] [drm] add ip block number 5 <dm>
[    1.645859] [drm] add ip block number 6 <gfx_v9_0>
[    1.645859] [drm] add ip block number 7 <sdma_v4_0>
[    1.645860] [drm] add ip block number 8 <vcn_v1_0>
[    1.645889] [drm] VCN decode is enabled in VM mode
[    1.645890] [drm] VCN encode is enabled in VM mode
[    1.669303] [drm] BIOS signature incorrect 0 0
[    1.669348] [drm] vm size is 262144 GB, 4 levels, block size is 9-bit, 
fragment size is 9-bit
[    1.669358] [drm] Detected VRAM RAM=1024M, BAR=1024M
[    1.669359] [drm] RAM width 128bits DDR4
[    1.669466] [drm] amdgpu: 1024M of VRAM memory ready
[    1.669467] [drm] amdgpu: 3072M of GTT memory ready.
[    1.669473] [drm] GART: num cpu pages 262144, num gpu pages 262144
[    1.669634] [drm] PCIE GART of 1024M enabled (table at 0x000000F400900000).
[    1.670752] [drm] use_doorbell being set to: [true]
[    1.670839] [drm] Found VCN firmware Version: 1.73 Family ID: 18
[    1.670841] [drm] PSP loading VCN firmware
[    1.843030] [drm] Display Core initialized with v3.1.44!
[    1.868553] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.868554] [drm] Driver supports precise vblank timestamp query.
[    1.891323] [drm] VCN decode and encode initialized successfully.
[    1.892629] [drm] fb mappable at 0xA1100000
[    1.892630] [drm] vram apper at 0xA0000000
[    1.892630] [drm] size 8294400
[    1.892630] [drm] fb depth is 24
[    1.892631] [drm]    pitch is 7680
[    1.892683] fbcon: amdgpudrmfb (fb0) is primary device
[    1.950133] amdgpu 0000:0b:00.0: fb0: amdgpudrmfb frame buffer device
[    1.966332] [drm] Initialized amdgpu 3.26.0 20150101 for 0000:0b:00.0 on 
minor 0

$ cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 200Mhz 
1: 400Mhz *
2: 1250Mhz  

Log: /var/log/syslog (or kern.log) juts before the freeze, after which
only har reset, power off/on makes ysstem boot agian:

Jan 15 02:34:13 elrond kernel: [  476.185425] gmc_v9_0_process_interrupt: 32 
callbacks suppressed
Jan 15 02:34:13 elrond kernel: [  476.185429] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 v
mid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185433] amdgpu 0000:0b:00.0:   at page 
0x000000010780a000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185434] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00301031
Jan 15 02:34:13 elrond kernel: [  476.185440] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 v
mid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185441] amdgpu 0000:0b:00.0:   at page 
0x000000010780b000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185443] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185448] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 v
mid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185449] amdgpu 0000:0b:00.0:   at page 
0x0000000107805000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185450] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185455] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185457] amdgpu 0000:0b:00.0:   at page 
0x0000000107806000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185458] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185463] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185464] amdgpu 0000:0b:00.0:   at page 
0x0000000107808000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185465] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185470] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185471] amdgpu 0000:0b:00.0:   at page 
0x0000000107809000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185473] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185478] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185479] amdgpu 0000:0b:00.0:   at page 
0x0000000107803000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185480] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185485] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185486] amdgpu 0000:0b:00.0:   at page 
0x0000000107804000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185487] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185492] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185493] amdgpu 0000:0b:00.0:   at page 
0x0000000107809000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185494] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:13 elrond kernel: [  476.185500] amdgpu 0000:0b:00.0: [gfxhub] VMC 
page fault (src_id:0 ring:24 vmid:3 pasid:32768)
Jan 15 02:34:13 elrond kernel: [  476.185501] amdgpu 0000:0b:00.0:   at page 
0x0000000107808000 from 27
Jan 15 02:34:13 elrond kernel: [  476.185502] amdgpu 0000:0b:00.0: 
VM_L2_PROTECTION_FAULT_STATUS:0x00000000
Jan 15 02:34:23 elrond kernel: [  486.421830] [drm:amdgpu_job_timedout 
[amdgpu]] *ERROR* ring gfx timeout, last signaled seq=41331, last emitted 
seq=41333
Jan 15 02:34:23 elrond kernel: [  486.421834] [drm] GPU recovery disabled.

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https://bugs.launchpad.net/bugs/1804505

Title:
  Kubuntu 18.04.01 - Ryzen 2400G / AMDGPU - Random system freezes

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I am experiencing some stray lockups which are most likely related to
  AMDGPU. There is no apparent logic in the pattern with wich the system
  hangs and I cannot provide any steps to reproduce the problem. One
  time it happened as I clicked a link in Firefox, new tab opened and
  the system froze. Another time, Firefox was not open and I was about
  to edit a text file by clicking "F4 Edit" in Krusader and the system
  froze. When the system freezes, it is completely unresponsive and
  there are no other options than to reset and reboot. The system
  generates no error reports as far as I can figure out and the only
  apparent info are some entries in the syslog. I have appended relevant
  info below, if further info may be needed please ask :)

  [b]inxi -Fz[/b]

  System:    Host: computername Kernel: 4.19.1-041901-generic x86_64 bits: 64 
Desktop: KDE Plasma 5.12.6
             Distro: Ubuntu 18.04.1 LTS
  Machine:   Device: desktop Mobo: ASUSTeK model: PRIME A320M-A v: Rev X.0x 
serial: N/A
             UEFI: American Megatrends v: 4023 date: 08/20/2018
  Battery    hidpp__0: charge: 80% condition: NA/NA Wh
  CPU:       Quad core AMD Ryzen 5 2400G with Radeon Vega Graphics (-MT-MCP-) 
cache: 2048 KB
             clock speeds: max: 3600 MHz 1: 1454 MHz 2: 1418 MHz 3: 1419 MHz 4: 
1419 MHz 5: 1419 MHz 6: 1419 MHz
             7: 1436 MHz 8: 1582 MHz
  Graphics:  Card: Advanced Micro Devices [AMD/ATI] Vega [Radeon Vega 8 Mobile]
             Display Server: x11 (X.Org 1.19.6 ) drivers: ati,amdgpu (unloaded: 
modesetting,fbdev,vesa,radeon)
             Resolution: 1680x1050@59.88hz
             OpenGL: renderer: AMD RAVEN (DRM 3.27.0 / 4.19.1-041901-generic, 
LLVM 6.0.0) version: 4.5 Mesa 18.0.5
  Audio:     Card-1 Advanced Micro Devices [AMD] Device 15e3 driver: 
snd_hda_intel
             Card-2 Advanced Micro Devices [AMD/ATI] Device 15de driver: 
snd_hda_intel
             Sound: Advanced Linux Sound Architecture v: k4.19.1-041901-generic
  Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
Controller driver: r8169
             IF: enp5s0 state: up speed: 100 Mbps duplex: full mac: <filter>
  Drives:    HDD Total Size: 250.1GB (26.2% used)
             ID-1: /dev/nvme0n1 model: Samsung_SSD_970_EVO_250GB size: 250.1GB
  Partition: ID-1: / size: 228G used: 61G (29%) fs: ext4 dev: /dev/nvme0n1p2
  RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
  Sensors:   System Temperatures: cpu: N/A mobo: N/A gpu: 26.0
             Fan Speeds (in rpm): cpu: 0
  Info:      Processes: 232 Uptime: 22 min Memory: 1176.8/6960.8MB Client: 
Shell (bash) inxi: 2.3.56 

  
  [b]SYSLOG[/b]

  Prior to the first relevant entry posted here is a CRON entry @
  13:18:01 which seems unrelated to the issue. All entries where
  preceeded with "Nov 21 13:23:13 computername kernel: ":

  [ 4335.012512] gmc_v9_0_process_interrupt: 13 callbacks suppressed
  [ 4335.012516] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012516] )
  [ 4335.012521] amdgpu 0000:08:00.0:   at address 0x0000000101c0d000 from 27
  [ 4335.012523] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012530] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012530] )
  [ 4335.012532] amdgpu 0000:08:00.0:   at address 0x0000000101c11000 from 27
  [ 4335.012534] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012540] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012540] )
  [ 4335.012542] amdgpu 0000:08:00.0:   at address 0x0000000101c29000 from 27
  [ 4335.012544] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012550] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012550] )
  [ 4335.012552] amdgpu 0000:08:00.0:   at address 0x0000000101c2d000 from 27
  [ 4335.012554] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012560] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012560] )
  [ 4335.012562] amdgpu 0000:08:00.0:   at address 0x0000000101c10000 from 27
  [ 4335.012563] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012569] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012569] )
  [ 4335.012571] amdgpu 0000:08:00.0:   at address 0x0000000101c2c000 from 27
  [ 4335.012572] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012579] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012579] )
  [ 4335.012581] amdgpu 0000:08:00.0:   at address 0x0000000101c2b000 from 27
  [ 4335.012582] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012588] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012588] )
  [ 4335.012590] amdgpu 0000:08:00.0:   at address 0x0000000101c0f000 from 27
  [ 4335.012591] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012597] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012597] )
  [ 4335.012599] amdgpu 0000:08:00.0:   at address 0x0000000101c29000 from 27
  [ 4335.012601] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4335.012607] amdgpu 0000:08:00.0: [gfxhub] VMC page fault (src_id:0 ring:24 
vmid:1 pasid:32768, for process Xorg pid 863 thread amdgpu_cs:0 pid 870
  [ 4335.012607] )
  [ 4335.012609] amdgpu 0000:08:00.0:   at address 0x0000000101c2a000 from 27
  [ 4335.012610] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00101031
  [ 4345.036479] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, 
signaled seq=120458, emitted seq=120461
  [ 4345.036486] [drm] GPU recovery disabled.

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