[Nouveau] GT 730 freeze : how do diagnose / debug ?

Sun May 7 21:50:57 UTC 2017

You have two issues:

(a) nouveau's GL driver messed something up, causing a read fault error
(b) nouveau's kernel driver tried to recover. It failed.

Solution to #1: None, really. You can try updating mesa, and hope it
helps. Not sure what version you're on.
Solution to #2: Ben Skeggs will hopefully have something clever to
say. The recovery logic was recently beefed up considerably, so the
fact that you even got that far is already a good start.

If you're looking for a stable experience with Xorg, I recommend using
xf86-video-nouveau -- it's been extensively battle-tested, and is
quite simple logic; I also recommend against anything that uses GL on
an ongoing basis (which, sadly, everyone thinks is the coolest thing
to do these days). If you're looking for a stable experience with a
GL-based Wayland compositor, you'll have to wait until either the
nouveau GL driver is perfect or nouveau kernel module can properly
recover from any screwups the GL driver makes.

You can also remove nouveau_dri.so entirely, which is a big hammer
against these types of issues (removes all GL-based acceleration), or
you can run certain key pieces of software with
LIBGL_ALWAYS_SOFTWARE=1, which will force a CPU-based GL
implementation.

Cheers,

  -ilia

2017-05-07 16:03 GMT-04:00 Vincent Vanackere <vincent.vanackere at gmail.com>:
> Hi,
>
>  I own an Asus GT730-SL-2GD3-BRK, trying to drive two monitors at 2560x1440
> resolution. Using gnome-shell with either Xorg or wayland I get screen
> freezes very frequently. Those freezes usually require a reboot to get
> working graphics (below a sample trace that I got yesterday).
>  I am running Ubuntu 17.04 with the latest kernels avalable, I also tested
> various more recent kernels including the latest drm tree at
> https://cgit.freedesktop.org/~airlied/linux/log/?h=drm-next but the problem
> always occurs.
>  When a freeze occurs, the computer is still reachable through ssh but the
> only action I found so far to get graphics back is to restart the computer.
>   I am willing to run diagnostics programs or test any patch if it would
> help. I'm also not excluding the possibility that I may have some faulty
> hardware so any hardwae-health-test advice would be welcome...
>
> Regards,
>
> Vincent Vanackère
>
> [    1.199135] nouveau 0000:01:00.0: NVIDIA GK208B (b06070b1)
> [    1.319930] nouveau 0000:01:00.0: bios: version 80.28.92.00.10
> [    1.322095] nouveau 0000:01:00.0: fb: 2048 MiB DDR3
> [    2.620362] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB
> [    2.620362] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
> [    2.620364] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
> [    2.620378] nouveau 0000:01:00.0: DRM: DCB version 4.0
> [    2.620379] nouveau 0000:01:00.0: DRM: DCB outp 00: 01000f02 00020030
> [    2.620380] nouveau 0000:01:00.0: DRM: DCB outp 01: 02011f62 00020010
> [    2.620380] nouveau 0000:01:00.0: DRM: DCB outp 02: 02022f10 00000000
> [    2.620381] nouveau 0000:01:00.0: DRM: DCB conn 00: 00001031
> [    2.620381] nouveau 0000:01:00.0: DRM: DCB conn 01: 00002161
> [    2.620382] nouveau 0000:01:00.0: DRM: DCB conn 02: 00000200
> [    2.666199] nouveau 0000:01:00.0: hwmon_device_register() is deprecated.
> Please convert the driver to use hwmon_device_register_with_info().
> [    2.717519] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
> [    2.992994] nouveau 0000:01:00.0: DRM: allocated 2560x1440 fb: 0x60000,
> bo ffff8cd1499f8000
> [    3.025200] fbcon: nouveaufb (fb0) is primary device
> [    3.253561] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
> [    3.268163] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on
> minor 0
> [ 2150.225651] nouveau 0000:01:00.0: fifo: read fault at 0006710000 engine
> 00 [GR] client 02 [GPC0/PE_0] reason 02 [PTE] on channel 31 [007e8cb000
> Xwayland[3019]]
> [ 2150.225662] nouveau 0000:01:00.0: fifo: channel 31: killed
> [ 2150.225663] nouveau 0000:01:00.0: fifo: runlist 0: scheduled for recovery
> [ 2150.225666] nouveau 0000:01:00.0: fifo: engine 0: scheduled for recovery
> [ 2150.225669] nouveau 0000:01:00.0: Xwayland[3019]: channel 31 killed!
> [ 2296.863975] Workqueue: events_unbound nv50_disp_atomic_commit_work
> [nouveau]
> [ 2296.863990]  ? nvkm_ioctl_ntfy_get+0x69/0xb0 [nouveau]
> [ 2296.864032]  nv50_disp_atomic_commit_tail+0x55/0x3a00 [nouveau]
> [ 2296.864047]  nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
> [ 2296.864118] Workqueue: events_unbound nv50_disp_atomic_commit_work
> [nouveau]
> [ 2296.864138]  ? nouveau_bo_rd32+0x2a/0x30 [nouveau]
> [ 2296.864153]  ? nv84_fence_read+0x2e/0x30 [nouveau]
> [ 2296.864175]  nv50_disp_atomic_commit_tail+0x55/0x3a00 [nouveau]
> [ 2296.864189]  nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
> [ 2417.699641] Workqueue: events_unbound nv50_disp_atomic_commit_work
> [nouveau]
> [ 2417.699656]  ? nvkm_ioctl_ntfy_get+0x69/0xb0 [nouveau]
> [ 2417.699688]  nv50_disp_atomic_commit_tail+0x55/0x3a00 [nouveau]
> [ 2417.699705]  nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
> [ 2417.699785] Workqueue: events_unbound nv50_disp_atomic_commit_work
> [nouveau]
> [ 2417.699808]  ? nouveau_bo_rd32+0x2a/0x30 [nouveau]
> [ 2417.699825]  ? nv84_fence_read+0x2e/0x30 [nouveau]
> [ 2417.699851]  nv50_disp_atomic_commit_tail+0x55/0x3a00 [nouveau]
> [ 2417.699867]  nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
> [ 2538.535424] Workqueue: events_unbound nv50_disp_atomic_commit_work
> [nouveau]
> [ 2538.535439]  ? nvkm_ioctl_ntfy_get+0x69/0xb0 [nouveau]
> [ 2538.535469]  nv50_disp_atomic_commit_tail+0x55/0x3a00 [nouveau]
> [ 2538.535485]  nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
> [ 2538.535555] Workqueue: events_unbound nv50_disp_atomic_commit_work
> [nouveau]
> [ 2538.535576]  ? nouveau_bo_rd32+0x2a/0x30 [nouveau]
> [ 2538.535591]  ? nv84_fence_read+0x2e/0x30 [nouveau]
> [ 2538.535614]  nv50_disp_atomic_commit_tail+0x55/0x3a00 [nouveau]
> [ 2538.535628]  nv50_disp_atomic_commit_work+0x12/0x20 [nouveau]
>
>
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