kworker blocked: nv50_disp_atomic_commit_work

[David R. Hedges]

I returned to my computer to find the lock screen up, but no keyboard or mouse response. I saw the clock (upper right corner) hadn't updated in several minutes.

I checked the syslog (remotely) and discovered some nouveau issues like this:

 [165486.931750] nouveau 0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
 [165486.931757] nouveau 0000:01:00.0: fifo: gr engine fault on channel 6, recovering...
 [165486.932317] nouveau 0000:01:00.0: fifo: write fault at 001d0a0000 engine 00 [GR] client 0f [GPC0/PROP_0] reason 02 [PTE] on channel 5 [00ff534000 compiz[3777]]
 [165486.932320] nouveau 0000:01:00.0: fifo: gr engine fault on channel 5, recovering...
 [165675.247319] INFO: task kworker/u24:9:12665 blocked for more than 120 seconds.
 [165675.247323] Not tainted 4.10.0-37-generic #41-Ubuntu
 [165675.247324] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 [165675.247326] kworker/u24:9 D 0 12665 2 0x00000000
 [165675.247368] Workqueue: events_unbound nv50_disp_atomic_commit_work [nouveau]
 [165675.247369] Call Trace:
 [165675.247374] __schedule+0x233/0x6f0
 [165675.247396] ? nvkm_ioctl_ntfy_get+0x67/0xb0 [nouveau]
 [165675.247397] schedule+0x36/0x80
 [165675.247399] schedule_timeout+0x22a/0x3f0
 [165675.247427] ? nvkm_client_ioctl+0x12/0x20 [nouveau]
 [165675.247447] ? nvif_object_ioctl+0x41/0x50 [nouveau]
 [165675.247474] ? nouveau_bo_rd32+0x2a/0x30 [nouveau]
 [165675.247501] ? nv84_fence_read+0x2e/0x30 [nouveau]
 [165675.247503] dma_fence_default_wait+0x1c8/0x250
 [165675.247504] ? dma_fence_free+0x20/0x20
 [165675.247506] dma_fence_wait_timeout+0x39/0xf0
 [165675.247514] drm_atomic_helper_wait_for_fences+0x48/0x120 [drm_kms_helper]
 [165675.247541] nv50_disp_atomic_commit_tail+0x55/0x3820 [nouveau]
 [165675.247543] ? __switch_to+0x23c/0x520
 [165675.247569] nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
 [165675.247572] process_one_work+0x1fc/0x4b0
 [165675.247573] worker_thread+0x4b/0x500
 [165675.247575] kthread+0x109/0x140
 [165675.247576] ? process_one_work+0x4b0/0x4b0
 [165675.247578] ? kthread_create_on_node+0x60/0x60
 [165675.247580] ret_from_fork+0x2c/0x40

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: xserver-xorg-video-nouveau 1:1.0.14-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-37.41-generic 4.10.17
Uname: Linux 4.10.0-37-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.5
Architecture: amd64
BootLog:

CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Thu Oct 12 15:01:21 2017
DistUpgraded: 2017-06-09 12:39:15,077 DEBUG icon theme changed, re-reading
DistroCodename: zesty
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 NVIDIA Corporation GK104 [GeForce GTX 770] [10de:1184] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd GK104 [GeForce GTX 770] [1458:3606]
InstallationDate: Installed on 2016-10-24 (352 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
MachineType: System manufacturer System Product Name
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.10.0-37-generic.efi.signed root=UUID=311cc681-166d-47bd-847d-f41c81578c1a ro rootflags=subvol=@ quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-nouveau
UpgradeStatus: Upgraded to zesty on 2017-06-09 (125 days ago)
dmi.bios.date: 05/06/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4701
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P9X79
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4701:bd05/06/2014:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP9X79:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.76-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.7-0ubuntu0.17.04.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.7-0ubuntu0.17.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.3-1ubuntu1.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.9.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.14-0ubuntu1
xserver.bootTime: Tue Oct 10 16:44:45 2017
xserver.configfile: default
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.3-1ubuntu1.1
xserver.video_driver: nouveau

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.