I have it too: (random hangups of whole system either under load/idle) - Ryzen5 2400 G - Ubuntu 18.04 and 18.10 - kernel 4.18
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. $ 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 $ 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 $ glxinfo | grep Mesa client glx vendor string: Mesa Project and SGI OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.2.2 OpenGL version string: 4.4 (Compatibility Profile) Mesa 18.2.2 OpenGL ES profile version string: OpenGL ES 3.2 Mesa 18.2.2 $ 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 -- 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/1810546 Title: AMDGPU VMC page fault with Athlon 200GE APU Status in Linux: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: System - AMD Athlon 200GE - Gigabyte GA-B450M-S2H board - latest F2c Firmware - Ubuntu 18.04.1 LTS Reproducible with kernels - linux-image-generic-hwe-18.04 version 4.18.0.13.63 - linux-image-unsigned-4.20.0-042000rc4-generic_4.20.0-042000rc4.201812030528_amd64.deb --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2016-08-15 (872 days ago) InstallationMedia: Mythbuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) Package: linux (not installed) Tags: bionic Uname: Linux 4.20.0-042000rc4-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: Upgraded to bionic on 2019-01-03 (1 days ago) UserGroups: _MarkForUpload: True --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mythfe 2175 F.... mythfrontend.re mythfe 2181 F.... pulseaudio /dev/snd/pcmC0D3p: mythfe 2175 F...m mythfrontend.re DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=/dev/mythnew/swap InstallationDate: Installed on 2016-08-15 (872 days ago) InstallationMedia: Mythbuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Gigabyte Technology Co., Ltd. B450M S2H Package: linux (not installed) ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-13-generic root=/dev/mapper/mythnew-myth_root ro verbose ProcVersionSignature: Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.18.0-13-generic N/A linux-backports-modules-4.18.0-13-generic N/A linux-firmware 1.173.2 RfKill: Tags: bionic Uname: Linux 4.18.0-13-generic x86_64 UpgradeStatus: Upgraded to bionic on 2019-01-03 (1 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 12/04/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F2c dmi.board.asset.tag: Default string dmi.board.name: B450M S2H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF2c:bd12/04/2018:svnGigabyteTechnologyCo.,Ltd.:pnB450MS2H:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450MS2H:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: Default string dmi.product.name: B450M S2H dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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