Public bug reported: 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 ** Affects: xserver-xorg-video-nouveau (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug ubuntu zesty -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1723245 Title: kworker blocked: nv50_disp_atomic_commit_work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1723245/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp