This is against disco, crashed not an hour ago.  Detail:

Jun 26 12:17:03 ceo1homenx btrbk: finished success - - - -
Jun 26 12:18:21 ceo1homenx systemd[1]: Starting Cleanup of Temporary 
Directories...
Jun 26 12:18:21 ceo1homenx systemd-tmpfiles[11589]: 
[/usr/lib/tmpfiles.d/spice-vdagentd.conf:2] Line references path below legacy 
directory /var/run/, updating /var/run/spice-vdagentd → /run/spice-vdagentd; 
please update the tmpfiles.d/
 drop-in file accordingly.
Jun 26 12:18:21 ceo1homenx systemd[1]: systemd-tmpfiles-clean.service: 
Succeeded.
Jun 26 12:18:21 ceo1homenx systemd[1]: Started Cleanup of Temporary Directories.
Jun 26 12:23:15 ceo1homenx kernel: [87603.066176] INFO: task kworker/u16:9:7088 
blocked for more than 120 seconds.
Jun 26 12:23:15 ceo1homenx kernel: [87603.066178]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:23:15 ceo1homenx kernel: [87603.066179] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:23:15 ceo1homenx kernel: [87603.066180] kworker/u16:9   D    0  7088  
    2 0x80000000
Jun 26 12:23:15 ceo1homenx kernel: [87603.066211] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066211] Call Trace:
Jun 26 12:23:15 ceo1homenx kernel: [87603.066216]  __schedule+0x2d0/0x840
Jun 26 12:23:15 ceo1homenx kernel: [87603.066238]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066239]  schedule+0x2c/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066240]  schedule_timeout+0x258/0x360
Jun 26 12:23:15 ceo1homenx kernel: [87603.066252]  ? 
__drm_crtc_commit_free+0x12/0x20 [drm]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066272]  ? 
nv50_wndw_atomic_destroy_state+0x1d/0x20 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066274]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:23:15 ceo1homenx kernel: [87603.066275]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:23:15 ceo1homenx kernel: [87603.066276]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:23:15 ceo1homenx kernel: [87603.066281]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066301]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066303]  ? __switch_to+0x96/0x4e0
Jun 26 12:23:15 ceo1homenx kernel: [87603.066303]  ? __switch_to_asm+0x34/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066322]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066324]  process_one_work+0x20f/0x410
Jun 26 12:23:15 ceo1homenx kernel: [87603.066325]  worker_thread+0x34/0x400
Jun 26 12:23:15 ceo1homenx kernel: [87603.066327]  kthread+0x120/0x140
Jun 26 12:23:15 ceo1homenx kernel: [87603.066327]  ? 
process_one_work+0x410/0x410
Jun 26 12:23:15 ceo1homenx kernel: [87603.066329]  ? __kthread_parkme+0x70/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066329]  ret_from_fork+0x35/0x40
Jun 26 12:23:15 ceo1homenx kernel: [87603.066338] INFO: task kworker/u16:8:9307 
blocked for more than 120 seconds.
Jun 26 12:23:15 ceo1homenx kernel: [87603.066339]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:23:15 ceo1homenx kernel: [87603.066340] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:23:15 ceo1homenx kernel: [87603.066340] kworker/u16:8   D    0  9307  
    2 0x80000000
Jun 26 12:23:15 ceo1homenx kernel: [87603.066360] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066361] Call Trace:
Jun 26 12:23:15 ceo1homenx kernel: [87603.066362]  __schedule+0x2d0/0x840
Jun 26 12:23:15 ceo1homenx kernel: [87603.066381]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066383]  schedule+0x2c/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066384]  schedule_timeout+0x258/0x360
Jun 26 12:23:15 ceo1homenx kernel: [87603.066385]  ? __slab_free+0x225/0x340
Jun 26 12:23:15 ceo1homenx kernel: [87603.066387]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:23:15 ceo1homenx kernel: [87603.066387]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:23:15 ceo1homenx kernel: [87603.066388]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:23:15 ceo1homenx kernel: [87603.066392]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066411]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066412]  ? __switch_to+0x96/0x4e0
Jun 26 12:23:15 ceo1homenx kernel: [87603.066412]  ? __switch_to_asm+0x34/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066431]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066431]  process_one_work+0x20f/0x410
Jun 26 12:23:15 ceo1homenx kernel: [87603.066432]  worker_thread+0x34/0x400
Jun 26 12:23:15 ceo1homenx kernel: [87603.066434]  kthread+0x120/0x140
Jun 26 12:23:15 ceo1homenx kernel: [87603.066434]  ? 
process_one_work+0x410/0x410
Jun 26 12:23:15 ceo1homenx kernel: [87603.066436]  ? __kthread_parkme+0x70/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066436]  ret_from_fork+0x35/0x40
Jun 26 12:23:15 ceo1homenx kernel: [87603.066439]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:23:15 ceo1homenx kernel: [87603.066439] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:23:15 ceo1homenx kernel: [87603.066440] kworker/u16:7   D    0 10297  
    2 0x80000000
Jun 26 12:23:15 ceo1homenx kernel: [87603.066458] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066459] Call Trace:
Jun 26 12:23:15 ceo1homenx kernel: [87603.066460]  __schedule+0x2d0/0x840
Jun 26 12:23:15 ceo1homenx kernel: [87603.066479]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066480]  schedule+0x2c/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066481]  schedule_timeout+0x258/0x360
Jun 26 12:23:15 ceo1homenx kernel: [87603.066482]  ? __slab_free+0x225/0x340
Jun 26 12:23:15 ceo1homenx kernel: [87603.066483]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:23:15 ceo1homenx kernel: [87603.066484]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:23:15 ceo1homenx kernel: [87603.066485]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:23:15 ceo1homenx kernel: [87603.066489]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066507]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066508]  ? __switch_to+0x96/0x4e0
Jun 26 12:23:15 ceo1homenx kernel: [87603.066509]  ? __switch_to_asm+0x34/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066527]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:23:15 ceo1homenx kernel: [87603.066528]  process_one_work+0x20f/0x410
Jun 26 12:23:15 ceo1homenx kernel: [87603.066529]  worker_thread+0x34/0x400
Jun 26 12:23:15 ceo1homenx kernel: [87603.066530]  kthread+0x120/0x140
Jun 26 12:23:15 ceo1homenx kernel: [87603.066531]  ? 
process_one_work+0x410/0x410
Jun 26 12:23:15 ceo1homenx kernel: [87603.066532]  ? __kthread_parkme+0x70/0x70
Jun 26 12:23:15 ceo1homenx kernel: [87603.066533]  ret_from_fork+0x35/0x40
Jun 26 12:25:01 ceo1homenx CRON[11952]: (root) CMD (command -v debian-sa1 > 
/dev/null && debian-sa1 1 1)
Jun 26 12:25:16 ceo1homenx kernel: [87723.895077] INFO: task kworker/u16:9:7088 
blocked for more than 120 seconds.
Jun 26 12:25:16 ceo1homenx kernel: [87723.895079]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:25:16 ceo1homenx kernel: [87723.895079] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:25:16 ceo1homenx kernel: [87723.895080] kworker/u16:9   D    0  7088  
    2 0x80000000
Jun 26 12:25:16 ceo1homenx kernel: [87723.895111] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895112] Call Trace:
Jun 26 12:25:16 ceo1homenx kernel: [87723.895115]  __schedule+0x2d0/0x840
Jun 26 12:25:16 ceo1homenx kernel: [87723.895138]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895139]  schedule+0x2c/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895141]  schedule_timeout+0x258/0x360
Jun 26 12:25:16 ceo1homenx kernel: [87723.895152]  ? 
__drm_crtc_commit_free+0x12/0x20 [drm]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895173]  ? 
nv50_wndw_atomic_destroy_state+0x1d/0x20 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895174]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:25:16 ceo1homenx kernel: [87723.895175]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:25:16 ceo1homenx kernel: [87723.895176]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:25:16 ceo1homenx kernel: [87723.895182]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895201]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895203]  ? __switch_to+0x96/0x4e0
Jun 26 12:25:16 ceo1homenx kernel: [87723.895204]  ? __switch_to_asm+0x34/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895223]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895225]  process_one_work+0x20f/0x410
Jun 26 12:25:16 ceo1homenx kernel: [87723.895226]  worker_thread+0x34/0x400
Jun 26 12:25:16 ceo1homenx kernel: [87723.895227]  kthread+0x120/0x140
Jun 26 12:25:16 ceo1homenx kernel: [87723.895228]  ? 
process_one_work+0x410/0x410
Jun 26 12:25:16 ceo1homenx kernel: [87723.895229]  ? __kthread_parkme+0x70/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895230]  ret_from_fork+0x35/0x40
Jun 26 12:25:16 ceo1homenx kernel: [87723.895239] INFO: task kworker/u16:8:9307 
blocked for more than 120 seconds.
Jun 26 12:25:16 ceo1homenx kernel: [87723.895240]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:25:16 ceo1homenx kernel: [87723.895241] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:25:16 ceo1homenx kernel: [87723.895241] kworker/u16:8   D    0  9307  
    2 0x80000000
Jun 26 12:25:16 ceo1homenx kernel: [87723.895261] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895262] Call Trace:
Jun 26 12:25:16 ceo1homenx kernel: [87723.895263]  __schedule+0x2d0/0x840
Jun 26 12:25:16 ceo1homenx kernel: [87723.895283]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895284]  schedule+0x2c/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895285]  schedule_timeout+0x258/0x360
Jun 26 12:25:16 ceo1homenx kernel: [87723.895287]  ? __slab_free+0x225/0x340
Jun 26 12:25:16 ceo1homenx kernel: [87723.895288]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:25:16 ceo1homenx kernel: [87723.895289]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:25:16 ceo1homenx kernel: [87723.895290]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:25:16 ceo1homenx kernel: [87723.895294]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895312]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895313]  ? __switch_to+0x96/0x4e0
Jun 26 12:25:16 ceo1homenx kernel: [87723.895314]  ? __switch_to_asm+0x34/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895333]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895334]  process_one_work+0x20f/0x410
Jun 26 12:25:16 ceo1homenx kernel: [87723.895335]  worker_thread+0x34/0x400
Jun 26 12:25:16 ceo1homenx kernel: [87723.895336]  kthread+0x120/0x140
Jun 26 12:25:16 ceo1homenx kernel: [87723.895337]  ? 
process_one_work+0x410/0x410
Jun 26 12:25:16 ceo1homenx kernel: [87723.895338]  ? __kthread_parkme+0x70/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895338]  ret_from_fork+0x35/0x40
Jun 26 12:25:16 ceo1homenx kernel: [87723.895340] INFO: task 
kworker/u16:7:10297 blocked for more than 120 seconds.
Jun 26 12:25:16 ceo1homenx kernel: [87723.895341]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:25:16 ceo1homenx kernel: [87723.895341] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:25:16 ceo1homenx kernel: [87723.895342] kworker/u16:7   D    0 10297  
    2 0x80000000
Jun 26 12:25:16 ceo1homenx kernel: [87723.895361] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895361] Call Trace:
Jun 26 12:25:16 ceo1homenx kernel: [87723.895363]  __schedule+0x2d0/0x840
Jun 26 12:25:16 ceo1homenx kernel: [87723.895381]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895382]  schedule+0x2c/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895383]  schedule_timeout+0x258/0x360
Jun 26 12:25:16 ceo1homenx kernel: [87723.895385]  ? __slab_free+0x225/0x340
Jun 26 12:25:16 ceo1homenx kernel: [87723.895386]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:25:16 ceo1homenx kernel: [87723.895387]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:25:16 ceo1homenx kernel: [87723.895388]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:25:16 ceo1homenx kernel: [87723.895391]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895410]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895411]  ? __switch_to+0x96/0x4e0
Jun 26 12:25:16 ceo1homenx kernel: [87723.895411]  ? __switch_to_asm+0x34/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895430]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:25:16 ceo1homenx kernel: [87723.895431]  process_one_work+0x20f/0x410
Jun 26 12:25:16 ceo1homenx kernel: [87723.895431]  worker_thread+0x34/0x400
Jun 26 12:25:16 ceo1homenx kernel: [87723.895433]  kthread+0x120/0x140
Jun 26 12:25:16 ceo1homenx kernel: [87723.895433]  ? 
process_one_work+0x410/0x410
Jun 26 12:25:16 ceo1homenx kernel: [87723.895435]  ? __kthread_parkme+0x70/0x70
Jun 26 12:25:16 ceo1homenx kernel: [87723.895435]  ret_from_fork+0x35/0x40
Jun 26 12:27:17 ceo1homenx kernel: [87844.724604] INFO: task kworker/u16:9:7088 
blocked for more than 120 seconds.
Jun 26 12:27:17 ceo1homenx kernel: [87844.724611]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:27:17 ceo1homenx kernel: [87844.724614] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:27:17 ceo1homenx kernel: [87844.724617] kworker/u16:9   D    0  7088  
    2 0x80000000
Jun 26 12:27:17 ceo1homenx kernel: [87844.724736] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.724739] Call Trace:
Jun 26 12:27:17 ceo1homenx kernel: [87844.724752]  __schedule+0x2d0/0x840
Jun 26 12:27:17 ceo1homenx kernel: [87844.724856]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.724862]  schedule+0x2c/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.724868]  schedule_timeout+0x258/0x360
Jun 26 12:27:17 ceo1homenx kernel: [87844.724907]  ? 
__drm_crtc_commit_free+0x12/0x20 [drm]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725005]  ? 
nv50_wndw_atomic_destroy_state+0x1d/0x20 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725012]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:27:17 ceo1homenx kernel: [87844.725017]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:27:17 ceo1homenx kernel: [87844.725022]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:27:17 ceo1homenx kernel: [87844.725041]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725136]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725141]  ? __switch_to+0x96/0x4e0
Jun 26 12:27:17 ceo1homenx kernel: [87844.725145]  ? __switch_to_asm+0x34/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.725237]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725243]  process_one_work+0x20f/0x410
Jun 26 12:27:17 ceo1homenx kernel: [87844.725247]  worker_thread+0x34/0x400
Jun 26 12:27:17 ceo1homenx kernel: [87844.725254]  kthread+0x120/0x140
Jun 26 12:27:17 ceo1homenx kernel: [87844.725258]  ? 
process_one_work+0x410/0x410
Jun 26 12:27:17 ceo1homenx kernel: [87844.725263]  ? __kthread_parkme+0x70/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.725267]  ret_from_fork+0x35/0x40
Jun 26 12:27:17 ceo1homenx kernel: [87844.725291] INFO: task kworker/u16:8:9307 
blocked for more than 120 seconds.
Jun 26 12:27:17 ceo1homenx kernel: [87844.725296]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:27:17 ceo1homenx kernel: [87844.725298] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:27:17 ceo1homenx kernel: [87844.725301] kworker/u16:8   D    0  9307  
    2 0x80000000
Jun 26 12:27:17 ceo1homenx kernel: [87844.725396] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725398] Call Trace:
Jun 26 12:27:17 ceo1homenx kernel: [87844.725405]  __schedule+0x2d0/0x840
Jun 26 12:27:17 ceo1homenx kernel: [87844.725495]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725502]  schedule+0x2c/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.725507]  schedule_timeout+0x258/0x360
Jun 26 12:27:17 ceo1homenx kernel: [87844.725514]  ? __slab_free+0x225/0x340
Jun 26 12:27:17 ceo1homenx kernel: [87844.725519]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:27:17 ceo1homenx kernel: [87844.725523]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:27:17 ceo1homenx kernel: [87844.725528]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:27:17 ceo1homenx kernel: [87844.725546]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725635]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725639]  ? __switch_to+0x96/0x4e0
Jun 26 12:27:17 ceo1homenx kernel: [87844.725643]  ? __switch_to_asm+0x34/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.725732]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725736]  process_one_work+0x20f/0x410
Jun 26 12:27:17 ceo1homenx kernel: [87844.725741]  worker_thread+0x34/0x400
Jun 26 12:27:17 ceo1homenx kernel: [87844.725746]  kthread+0x120/0x140
Jun 26 12:27:17 ceo1homenx kernel: [87844.725750]  ? 
process_one_work+0x410/0x410
Jun 26 12:27:17 ceo1homenx kernel: [87844.725755]  ? __kthread_parkme+0x70/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.725759]  ret_from_fork+0x35/0x40
Jun 26 12:27:17 ceo1homenx kernel: [87844.725765] INFO: task 
kworker/u16:7:10297 blocked for more than 120 seconds.
Jun 26 12:27:17 ceo1homenx kernel: [87844.725769]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:27:17 ceo1homenx kernel: [87844.725771] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:27:17 ceo1homenx kernel: [87844.725774] kworker/u16:7   D    0 10297  
    2 0x80000000
Jun 26 12:27:17 ceo1homenx kernel: [87844.725885] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.725890] Call Trace:
Jun 26 12:27:17 ceo1homenx kernel: [87844.725902]  __schedule+0x2d0/0x840
Jun 26 12:27:17 ceo1homenx kernel: [87844.726014]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.726022]  schedule+0x2c/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.726029]  schedule_timeout+0x258/0x360
Jun 26 12:27:17 ceo1homenx kernel: [87844.726038]  ? __slab_free+0x225/0x340
Jun 26 12:27:17 ceo1homenx kernel: [87844.726044]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:27:17 ceo1homenx kernel: [87844.726050]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:27:17 ceo1homenx kernel: [87844.726056]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:27:17 ceo1homenx kernel: [87844.726075]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:27:17 ceo1homenx kernel: [87844.726165]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.726169]  ? __switch_to+0x96/0x4e0
Jun 26 12:27:17 ceo1homenx kernel: [87844.726172]  ? __switch_to_asm+0x34/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.726260]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:27:17 ceo1homenx kernel: [87844.726265]  process_one_work+0x20f/0x410
Jun 26 12:27:17 ceo1homenx kernel: [87844.726269]  worker_thread+0x34/0x400
Jun 26 12:27:17 ceo1homenx kernel: [87844.726276]  kthread+0x120/0x140
Jun 26 12:27:17 ceo1homenx kernel: [87844.726279]  ? 
process_one_work+0x410/0x410
Jun 26 12:27:17 ceo1homenx kernel: [87844.726285]  ? __kthread_parkme+0x70/0x70
Jun 26 12:27:17 ceo1homenx kernel: [87844.726288]  ret_from_fork+0x35/0x40
Jun 26 12:29:18 ceo1homenx kernel: [87965.557909] INFO: task kworker/u16:9:7088 
blocked for more than 120 seconds.
Jun 26 12:29:18 ceo1homenx kernel: [87965.557916]       Tainted: G        W     
    5.0.0-19-generic #20-Ubuntu
Jun 26 12:29:18 ceo1homenx kernel: [87965.557919] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 12:29:18 ceo1homenx kernel: [87965.557922] kworker/u16:9   D    0  7088  
    2 0x80000000
Jun 26 12:29:18 ceo1homenx kernel: [87965.558041] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558044] Call Trace:
Jun 26 12:29:18 ceo1homenx kernel: [87965.558056]  __schedule+0x2d0/0x840
Jun 26 12:29:18 ceo1homenx kernel: [87965.558160]  ? 
nouveau_display_scanoutpos+0xe9/0x180 [nouveau]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558167]  schedule+0x2c/0x70
Jun 26 12:29:18 ceo1homenx kernel: [87965.558172]  schedule_timeout+0x258/0x360
Jun 26 12:29:18 ceo1homenx kernel: [87965.558213]  ? 
__drm_crtc_commit_free+0x12/0x20 [drm]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558309]  ? 
nv50_wndw_atomic_destroy_state+0x1d/0x20 [nouveau]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558316]  
dma_fence_default_wait+0x20a/0x280
Jun 26 12:29:18 ceo1homenx kernel: [87965.558320]  ? dma_fence_release+0xa0/0xa0
Jun 26 12:29:18 ceo1homenx kernel: [87965.558325]  
dma_fence_wait_timeout+0xe7/0x110
Jun 26 12:29:18 ceo1homenx kernel: [87965.558344]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558437]  
nv50_disp_atomic_commit_tail+0x78/0x870 [nouveau]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558443]  ? __switch_to+0x96/0x4e0
Jun 26 12:29:18 ceo1homenx kernel: [87965.558446]  ? __switch_to_asm+0x34/0x70
Jun 26 12:29:18 ceo1homenx kernel: [87965.558536]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
Jun 26 12:29:18 ceo1homenx kernel: [87965.558542]  process_one_work+0x20f/0x410
Jun 26 12:29:18 ceo1homenx kernel: [87965.558547]  worker_thread+0x34/0x400
Jun 26 12:29:18 ceo1homenx kernel: [87965.558553]  kthread+0x120/0x140
Jun 26 12:29:18 ceo1homenx kernel: [87965.558557]  ? 
process_one_work+0x410/0x410
Jun 26 12:29:18 ceo1homenx kernel: [87965.558563]  ? __kthread_parkme+0x70/0x70
Jun 26 12:29:18 ceo1homenx kernel: [87965.558567]  ret_from_fork+0x35/0x40
Jun 26 12:30:01 ceo1homenx CRON[12207]: (root) CMD ([ -x /etc/init.d/anacron ] 
&& if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start 
>/dev/null; fi)
Jun 26 12:33:21 ceo1homenx systemd[1]: Started Run anacron jobs.
Jun 26 12:33:21 ceo1homenx anacron[12372]: Anacron 2.3 started on 2019-06-26
Jun 26 12:33:21 ceo1homenx anacron[12372]: Normal exit (0 jobs run)
Jun 26 12:33:21 ceo1homenx systemd[1]: anacron.service: Succeeded.
Jun 26 12:35:02 ceo1homenx CRON[12477]: (root) CMD (command -v debian-sa1 > 
/dev/null && debian-sa1 1 1)
Jun 26 12:39:01 ceo1homenx systemd[1]: Starting Clean php session files...
Jun 26 12:39:01 ceo1homenx CRON[12710]: (root) CMD (  [ -x 
/usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then 
/usr/lib/php/sessionclean; fi)
Jun 26 12:39:01 ceo1homenx systemd[1]: phpsessionclean.service: Succeeded.
Jun 26 12:39:01 ceo1homenx systemd[1]: Started Clean php session files.
Jun 26 12:45:02 ceo1homenx CRON[13049]: (root) CMD (command -v debian-sa1 > 
/dev/null && debian-sa1 1 1)
Jun 26 12:55:02 ceo1homenx CRON[13571]: (root) CMD (command -v debian-sa1 > 
/dev/null && debian-sa1 1 1)
Jun 26 12:56:20 ceo1homenx kernel: [89587.485877] nouveau 0000:01:00.0: fifo: 
PBDMA0: 04000000 [ACQUIRE] ch 2 [007fa99000 Xorg[3086]] subc 0 mthd 001c data 
00001004
Jun 26 12:56:24 ceo1homenx kernel: [89591.781878] nouveau 0000:01:00.0: fifo: 
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Jun 26 12:56:24 ceo1homenx kernel: [89591.781897] nouveau 0000:01:00.0: fifo: 
runlist 0: scheduled for recovery
Jun 26 12:56:24 ceo1homenx kernel: [89591.781918] nouveau 0000:01:00.0: fifo: 
channel 5: killed
Jun 26 12:56:24 ceo1homenx kernel: [89591.781926] nouveau 0000:01:00.0: fifo: 
engine 0: scheduled for recovery
Jun 26 12:56:24 ceo1homenx kernel: [89591.782531] nouveau 0000:01:00.0: 
Xorg[3086]: channel 5 killed!
Jun 26 12:56:24 ceo1homenx kernel: [89591.784954] nouveau 0000:01:00.0: fifo: 
PBDMA0: 04000000 [ACQUIRE] ch 2 [007fa99000 Xorg[3086]] subc 0 mthd 001c data 
00001004
Jun 26 12:56:24 ceo1homenx kernel: [89591.787346] nouveau 0000:01:00.0: fifo: 
PBDMA0: 04000000 [ACQUIRE] ch 2 [007fa99000 Xorg[3086]] subc 0 mthd 001c data 
00001004
Jun 26 12:56:24 ceo1homenx kernel: [89591.791222] nouveau 0000:01:00.0: fifo: 
PBDMA0: 04000000 [ACQUIRE] ch 2 [007fa99000 Xorg[3086]] subc 0 mthd 001c data 
00001004
Jun 26 12:56:24 ceo1homenx kernel: [89591.799169] nouveau 0000:01:00.0: fifo: 
PBDMA0: 04000000 [ACQUIRE] ch 2 [007fa99000 Xorg[3086]] subc 0 mthd 001c data 
00001004
Jun 26 12:56:24 ceo1homenx kernel: [89591.799874] nouveau 0000:01:00.0: fifo: 
PBDMA0: 04000000 [ACQUIRE] ch 2 [007fa99000 Xorg[3086]] subc 0 mthd 001c data 
00001004
Jun 26 12:56:24 ceo1homenx dbus-daemon[1027]: [system] Activating via systemd: 
service name='org.freedesktop.PackageKit' unit='packagekit.service' requested 
by ':1.270' (uid=1000 pid=3346 comm="/usr/bin/plasmashell " label="unconfined")
Jun 26 12:56:24 ceo1homenx systemd[1]: Starting PackageKit Daemon...
Jun 26 12:56:24 ceo1homenx PackageKit: daemon start
Jun 26 12:56:24 ceo1homenx dbus-daemon[1027]: [system] Successfully activated 
service 'org.freedesktop.PackageKit'
Jun 26 12:56:24 ceo1homenx systemd[1]: Started PackageKit Daemon.
Jun 26 13:01:30 ceo1homenx PackageKit: daemon quit
Jun 26 13:01:30 ceo1homenx systemd[1]: packagekit.service: Main process exited, 
code=killed, status=15/TERM
Jun 26 13:01:30 ceo1homenx systemd[1]: packagekit.service: Succeeded.
Jun 26 13:05:01 ceo1homenx CRON[14159]: (root) CMD (command -v debian-sa1 > 
/dev/null && debian-sa1 1 1)
Jun 26 13:09:02 ceo1homenx systemd[1]: Starting Clean php session files...
Jun 26 13:09:02 ceo1homenx CRON[14381]: (root) CMD (  [ -x 
/usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then 
/usr/lib/php/sessionclean; fi)
Jun 26 13:09:02 ceo1homenx systemd[1]: phpsessionclean.service: Succeeded.
Jun 26 13:09:02 ceo1homenx systemd[1]: Started Clean php session files.
Jun 26 13:15:02 ceo1homenx CRON[14748]: (root) CMD (command -v debian-sa1 > 
/dev/null && debian-sa1 1 1)
Jun 26 13:17:01 ceo1homenx CRON[14851]: (root) CMD (   cd / && run-parts 
--report /etc/cron.hourly)
Jun 26 13:17:01 ceo1homenx btrbk: startup v0.27.1 - - - # btrbk command line 
client, version 0.27.1
Jun 26 13:17:01 ceo1homenx btrbk: snapshot starting 
/snapshots/home_snapshots/@home.20190626T1317 /snapshots/@home - -
Jun 26 13:17:03 ceo1homenx btrbk: snapshot success 
/snapshots/home_snapshots/@home.20190626T1317 /snapshots/@home - -
Jun 26 13:17:03 ceo1homenx btrbk: delete_snapshot starting 
/snapshots/home_snapshots/@home.20190622T1217 - - -
Jun 26 13:17:03 ceo1homenx btrbk: delete_snapshot success 
/snapshots/home_snapshots/@home.20190622T1217 - - -
Jun 26 13:17:03 ceo1homenx btrbk: finished success - - - -

-- Hard Lock-- power cycle reboot the only possible fix.

-- 
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https://bugs.launchpad.net/bugs/1797296

Title:
  nouveau lockup

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Cosmic:
  Triaged

Bug description:
  Oct 10 11:38:30 sun kernel: [17891.545097] nouveau 0000:03:00.0: fifo: 
SCHED_ERROR 0a [CTXSW_TIMEOUT]
  Oct 10 11:38:30 sun kernel: [17891.545109] nouveau 0000:03:00.0: fifo: 
runlist 0: scheduled for recovery
  Oct 10 11:38:30 sun kernel: [17891.545118] nouveau 0000:03:00.0: fifo: 
channel 12: killed
  Oct 10 11:38:30 sun kernel: [17891.545125] nouveau 0000:03:00.0: fifo: engine 
0: scheduled for recovery
  Oct 10 11:38:30 sun kernel: [17891.545563] nouveau 0000:03:00.0: 
systemd-logind[944]: channel 12 killed!
  Oct 10 11:42:24 sun kernel: [18125.788110] INFO: task kworker/u32:0:14726 
blocked for more than 120 seconds.
  Oct 10 11:42:24 sun kernel: [18125.788114]       Tainted: G        W         
4.18.0-8-generic #9-Ubuntu
  Oct 10 11:42:24 sun kernel: [18125.788115] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Oct 10 11:42:24 sun kernel: [18125.788117] kworker/u32:0   D    0 14726      
2 0x80000000
  Oct 10 11:42:24 sun kernel: [18125.788154] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788155] Call Trace:
  Oct 10 11:42:24 sun kernel: [18125.788161]  __schedule+0x29e/0x840
  Oct 10 11:42:24 sun kernel: [18125.788178]  ? nvkm_ioctl_ntfy_get+0x5c/0x80 
[nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788180]  schedule+0x2c/0x80
  Oct 10 11:42:24 sun kernel: [18125.788181]  schedule_timeout+0x258/0x360
  Oct 10 11:42:24 sun kernel: [18125.788197]  ? nvif_object_ioctl+0x47/0x50 
[nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788220]  ? nouveau_bo_rd32+0x2a/0x30 
[nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788242]  ? nv84_fence_read+0x2c/0x30 
[nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788263]  ? 
nouveau_fence_no_signaling+0x2a/0x90 [nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788266]  dma_fence_default_wait+0x1fc/0x260
  Oct 10 11:42:24 sun kernel: [18125.788267]  ? dma_fence_release+0xa0/0xa0
  Oct 10 11:42:24 sun kernel: [18125.788269]  dma_fence_wait_timeout+0x3e/0xf0
  Oct 10 11:42:24 sun kernel: [18125.788275]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
  Oct 10 11:42:24 sun kernel: [18125.788309]  
nv50_disp_atomic_commit_tail+0x78/0x860 [nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788311]  ? __switch_to_asm+0x40/0x70
  Oct 10 11:42:24 sun kernel: [18125.788312]  ? __switch_to_asm+0x34/0x70
  Oct 10 11:42:24 sun kernel: [18125.788333]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
  Oct 10 11:42:24 sun kernel: [18125.788335]  process_one_work+0x20f/0x3c0
  Oct 10 11:42:24 sun kernel: [18125.788337]  worker_thread+0x34/0x400
  Oct 10 11:42:24 sun kernel: [18125.788339]  kthread+0x120/0x140
  Oct 10 11:42:24 sun kernel: [18125.788340]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Oct 10 11:42:24 sun kernel: [18125.788341]  ? kthread_bind+0x40/0x40
  Oct 10 11:42:24 sun kernel: [18125.788343]  ret_from_fork+0x35/0x40
  Oct 10 11:44:25 sun kernel: [18246.620114] INFO: task kworker/u32:0:14726 
blocked for more than 120 seconds.
  Oct 10 11:44:25 sun kernel: [18246.620117]       Tainted: G        W         
4.18.0-8-generic #9-Ubuntu
  Oct 10 11:44:25 sun kernel: [18246.620118] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Oct 10 11:44:25 sun kernel: [18246.620120] kworker/u32:0   D    0 14726      
2 0x80000000
  Oct 10 11:44:25 sun kernel: [18246.620156] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620157] Call Trace:
  Oct 10 11:44:25 sun kernel: [18246.620163]  __schedule+0x29e/0x840
  Oct 10 11:44:25 sun kernel: [18246.620180]  ? nvkm_ioctl_ntfy_get+0x5c/0x80 
[nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620181]  schedule+0x2c/0x80
  Oct 10 11:44:25 sun kernel: [18246.620183]  schedule_timeout+0x258/0x360
  Oct 10 11:44:25 sun kernel: [18246.620197]  ? nvif_object_ioctl+0x47/0x50 
[nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620221]  ? nouveau_bo_rd32+0x2a/0x30 
[nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620242]  ? nv84_fence_read+0x2c/0x30 
[nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620263]  ? 
nouveau_fence_no_signaling+0x2a/0x90 [nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620265]  dma_fence_default_wait+0x1fc/0x260
  Oct 10 11:44:25 sun kernel: [18246.620267]  ? dma_fence_release+0xa0/0xa0
  Oct 10 11:44:25 sun kernel: [18246.620268]  dma_fence_wait_timeout+0x3e/0xf0
  Oct 10 11:44:25 sun kernel: [18246.620274]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
  Oct 10 11:44:25 sun kernel: [18246.620296]  
nv50_disp_atomic_commit_tail+0x78/0x860 [nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620297]  ? __switch_to_asm+0x40/0x70
  Oct 10 11:44:25 sun kernel: [18246.620299]  ? __switch_to_asm+0x34/0x70
  Oct 10 11:44:25 sun kernel: [18246.620320]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
  Oct 10 11:44:25 sun kernel: [18246.620322]  process_one_work+0x20f/0x3c0
  Oct 10 11:44:25 sun kernel: [18246.620324]  worker_thread+0x34/0x400
  Oct 10 11:44:25 sun kernel: [18246.620326]  kthread+0x120/0x140
  Oct 10 11:44:25 sun kernel: [18246.620327]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Oct 10 11:44:25 sun kernel: [18246.620328]  ? kthread_bind+0x40/0x40
  Oct 10 11:44:25 sun kernel: [18246.620330]  ret_from_fork+0x35/0x40
  Oct 10 11:46:26 sun kernel: [18367.452168] INFO: task kworker/u32:0:14726 
blocked for more than 120 seconds.
  Oct 10 11:46:26 sun kernel: [18367.452172]       Tainted: G        W         
4.18.0-8-generic #9-Ubuntu
  Oct 10 11:46:26 sun kernel: [18367.452173] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Oct 10 11:46:26 sun kernel: [18367.452174] kworker/u32:0   D    0 14726      
2 0x80000000
  Oct 10 11:46:26 sun kernel: [18367.452212] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452213] Call Trace:
  Oct 10 11:46:26 sun kernel: [18367.452219]  __schedule+0x29e/0x840
  Oct 10 11:46:26 sun kernel: [18367.452236]  ? nvkm_ioctl_ntfy_get+0x5c/0x80 
[nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452237]  schedule+0x2c/0x80
  Oct 10 11:46:26 sun kernel: [18367.452239]  schedule_timeout+0x258/0x360
  Oct 10 11:46:26 sun kernel: [18367.452254]  ? nvif_object_ioctl+0x47/0x50 
[nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452278]  ? nouveau_bo_rd32+0x2a/0x30 
[nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452300]  ? nv84_fence_read+0x2c/0x30 
[nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452333]  ? 
nouveau_fence_no_signaling+0x2a/0x90 [nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452335]  dma_fence_default_wait+0x1fc/0x260
  Oct 10 11:46:26 sun kernel: [18367.452336]  ? dma_fence_release+0xa0/0xa0
  Oct 10 11:46:26 sun kernel: [18367.452338]  dma_fence_wait_timeout+0x3e/0xf0
  Oct 10 11:46:26 sun kernel: [18367.452345]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
  Oct 10 11:46:26 sun kernel: [18367.452366]  
nv50_disp_atomic_commit_tail+0x78/0x860 [nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452368]  ? __switch_to_asm+0x40/0x70
  Oct 10 11:46:26 sun kernel: [18367.452369]  ? __switch_to_asm+0x34/0x70
  Oct 10 11:46:26 sun kernel: [18367.452390]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
  Oct 10 11:46:26 sun kernel: [18367.452392]  process_one_work+0x20f/0x3c0
  Oct 10 11:46:26 sun kernel: [18367.452394]  worker_thread+0x34/0x400
  Oct 10 11:46:26 sun kernel: [18367.452395]  kthread+0x120/0x140
  Oct 10 11:46:26 sun kernel: [18367.452397]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Oct 10 11:46:26 sun kernel: [18367.452398]  ? kthread_bind+0x40/0x40
  Oct 10 11:46:26 sun kernel: [18367.452400]  ret_from_fork+0x35/0x40
  Oct 10 11:48:27 sun kernel: [18488.284112] INFO: task kworker/u32:0:14726 
blocked for more than 120 seconds.
  Oct 10 11:48:27 sun kernel: [18488.284116]       Tainted: G        W         
4.18.0-8-generic #9-Ubuntu
  Oct 10 11:48:27 sun kernel: [18488.284116] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Oct 10 11:48:27 sun kernel: [18488.284118] kworker/u32:0   D    0 14726      
2 0x80000000
  Oct 10 11:48:27 sun kernel: [18488.284156] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284157] Call Trace:
  Oct 10 11:48:27 sun kernel: [18488.284163]  __schedule+0x29e/0x840
  Oct 10 11:48:27 sun kernel: [18488.284180]  ? nvkm_ioctl_ntfy_get+0x5c/0x80 
[nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284181]  schedule+0x2c/0x80
  Oct 10 11:48:27 sun kernel: [18488.284183]  schedule_timeout+0x258/0x360
  Oct 10 11:48:27 sun kernel: [18488.284198]  ? nvif_object_ioctl+0x47/0x50 
[nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284221]  ? nouveau_bo_rd32+0x2a/0x30 
[nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284242]  ? nv84_fence_read+0x2c/0x30 
[nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284263]  ? 
nouveau_fence_no_signaling+0x2a/0x90 [nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284265]  dma_fence_default_wait+0x1fc/0x260
  Oct 10 11:48:27 sun kernel: [18488.284266]  ? dma_fence_release+0xa0/0xa0
  Oct 10 11:48:27 sun kernel: [18488.284268]  dma_fence_wait_timeout+0x3e/0xf0
  Oct 10 11:48:27 sun kernel: [18488.284286]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
  Oct 10 11:48:27 sun kernel: [18488.284306]  
nv50_disp_atomic_commit_tail+0x78/0x860 [nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284308]  ? __switch_to_asm+0x40/0x70
  Oct 10 11:48:27 sun kernel: [18488.284309]  ? __switch_to_asm+0x34/0x70
  Oct 10 11:48:27 sun kernel: [18488.284329]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
  Oct 10 11:48:27 sun kernel: [18488.284331]  process_one_work+0x20f/0x3c0
  Oct 10 11:48:27 sun kernel: [18488.284333]  worker_thread+0x34/0x400
  Oct 10 11:48:27 sun kernel: [18488.284334]  kthread+0x120/0x140
  Oct 10 11:48:27 sun kernel: [18488.284336]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Oct 10 11:48:27 sun kernel: [18488.284337]  ? kthread_bind+0x40/0x40
  Oct 10 11:48:27 sun kernel: [18488.284338]  ret_from_fork+0x35/0x40
  Oct 10 11:48:48 sun org.gnome.SettingsDaemon.MediaKeys.desktop[2331]: 
[2857:2878:1010/114848.272692:ERROR:service_manager_context.cc(270)] Attempting 
to run unsupported native service: /opt/google/chrome/content_utility.service
  Oct 10 11:48:48 sun org.gnome.SettingsDaemon.MediaKeys.desktop[2331]: 
[2857:2878:1010/114848.295389:ERROR:service_manager_context.cc(270)] Attempting 
to run unsupported native service: /opt/google/chrome/content_utility.service
  Oct 10 11:48:48 sun org.gnome.SettingsDaemon.MediaKeys.desktop[2331]: 
[2857:2878:1010/114848.365006:ERROR:service_manager_context.cc(270)] Attempting 
to run unsupported native service: /opt/google/chrome/content_utility.service
  Oct 10 11:50:27 sun kernel: [18609.116144] INFO: task kworker/u32:0:14726 
blocked for more than 120 seconds.
  Oct 10 11:50:27 sun kernel: [18609.116148]       Tainted: G        W         
4.18.0-8-generic #9-Ubuntu
  Oct 10 11:50:27 sun kernel: [18609.116149] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Oct 10 11:50:27 sun kernel: [18609.116150] kworker/u32:0   D    0 14726      
2 0x80000000
  Oct 10 11:50:27 sun kernel: [18609.116188] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116189] Call Trace:
  Oct 10 11:50:27 sun kernel: [18609.116194]  __schedule+0x29e/0x840
  Oct 10 11:50:27 sun kernel: [18609.116211]  ? nvkm_ioctl_ntfy_get+0x5c/0x80 
[nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116213]  schedule+0x2c/0x80
  Oct 10 11:50:27 sun kernel: [18609.116215]  schedule_timeout+0x258/0x360
  Oct 10 11:50:27 sun kernel: [18609.116230]  ? nvif_object_ioctl+0x47/0x50 
[nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116253]  ? nouveau_bo_rd32+0x2a/0x30 
[nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116275]  ? nv84_fence_read+0x2c/0x30 
[nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116308]  ? 
nouveau_fence_no_signaling+0x2a/0x90 [nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116311]  dma_fence_default_wait+0x1fc/0x260
  Oct 10 11:50:27 sun kernel: [18609.116312]  ? dma_fence_release+0xa0/0xa0
  Oct 10 11:50:27 sun kernel: [18609.116314]  dma_fence_wait_timeout+0x3e/0xf0
  Oct 10 11:50:27 sun kernel: [18609.116320]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
  Oct 10 11:50:27 sun kernel: [18609.116342]  
nv50_disp_atomic_commit_tail+0x78/0x860 [nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116343]  ? __switch_to_asm+0x40/0x70
  Oct 10 11:50:27 sun kernel: [18609.116345]  ? __switch_to_asm+0x34/0x70
  Oct 10 11:50:27 sun kernel: [18609.116366]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
  Oct 10 11:50:27 sun kernel: [18609.116368]  process_one_work+0x20f/0x3c0
  Oct 10 11:50:27 sun kernel: [18609.116370]  worker_thread+0x34/0x400
  Oct 10 11:50:27 sun kernel: [18609.116383]  kthread+0x120/0x140
  Oct 10 11:50:27 sun kernel: [18609.116385]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Oct 10 11:50:27 sun kernel: [18609.116386]  ? kthread_bind+0x40/0x40
  Oct 10 11:50:27 sun kernel: [18609.116387]  ret_from_fork+0x35/0x40
  Oct 10 11:52:28 sun kernel: [18729.948114] INFO: task kworker/u32:0:14726 
blocked for more than 120 seconds.
  Oct 10 11:52:28 sun kernel: [18729.948118]       Tainted: G        W         
4.18.0-8-generic #9-Ubuntu
  Oct 10 11:52:28 sun kernel: [18729.948119] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Oct 10 11:52:28 sun kernel: [18729.948121] kworker/u32:0   D    0 14726      
2 0x80000000
  Oct 10 11:52:28 sun kernel: [18729.948158] Workqueue: events_unbound 
nv50_disp_atomic_commit_work [nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948160] Call Trace:
  Oct 10 11:52:28 sun kernel: [18729.948165]  __schedule+0x29e/0x840
  Oct 10 11:52:28 sun kernel: [18729.948182]  ? nvkm_ioctl_ntfy_get+0x5c/0x80 
[nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948183]  schedule+0x2c/0x80
  Oct 10 11:52:28 sun kernel: [18729.948185]  schedule_timeout+0x258/0x360
  Oct 10 11:52:28 sun kernel: [18729.948199]  ? nvif_object_ioctl+0x47/0x50 
[nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948223]  ? nouveau_bo_rd32+0x2a/0x30 
[nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948244]  ? nv84_fence_read+0x2c/0x30 
[nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948265]  ? 
nouveau_fence_no_signaling+0x2a/0x90 [nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948267]  dma_fence_default_wait+0x1fc/0x260
  Oct 10 11:52:28 sun kernel: [18729.948269]  ? dma_fence_release+0xa0/0xa0
  Oct 10 11:52:28 sun kernel: [18729.948270]  dma_fence_wait_timeout+0x3e/0xf0
  Oct 10 11:52:28 sun kernel: [18729.948276]  
drm_atomic_helper_wait_for_fences+0x3f/0xc0 [drm_kms_helper]
  Oct 10 11:52:28 sun kernel: [18729.948298]  
nv50_disp_atomic_commit_tail+0x78/0x860 [nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948299]  ? __switch_to_asm+0x40/0x70
  Oct 10 11:52:28 sun kernel: [18729.948301]  ? __switch_to_asm+0x34/0x70
  Oct 10 11:52:28 sun kernel: [18729.948334]  
nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
  Oct 10 11:52:28 sun kernel: [18729.948336]  process_one_work+0x20f/0x3c0
  Oct 10 11:52:28 sun kernel: [18729.948338]  worker_thread+0x34/0x400
  Oct 10 11:52:28 sun kernel: [18729.948339]  kthread+0x120/0x140
  Oct 10 11:52:28 sun kernel: [18729.948341]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Oct 10 11:52:28 sun kernel: [18729.948342]  ? kthread_bind+0x40/0x40
  Oct 10 11:52:28 sun kernel: [18729.948343]  ret_from_fork+0x35/0x40

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