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Geoffrey Allott

2020-Apr-05 10:53 UTC

[Nouveau] Reproducable Crashes in Nouveau with GM204 [GeForce GTX 980]

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   Greetings, I hope this bug report is in the right place; the documentation at
   <a
href="https://nouveau.freedesktop.org/wiki/Bugs/">https://nouveau.freedesktop.org/wiki/Bugs/</a>
links to a defunct bugzilla page.
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   I'm running an NVIDIA Corporation GM204  [GeForce GTX 980] graphics card
in an EVGA X99 classified motherboard, outputting over DisplayPort. I'm
running Arch Linux with kernel 5.5.13-arch2-1, and I'm using gnome under
wayland (so no X server except for Xwayland).
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   When running OpenGL applications, the driver appears to crash very
frequently. I've managed to reproduce the issue with the following script
(epiphany is gnome web, based on webkit):
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    #!/bin/sh
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    time=$(date +%F.%T)
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    stdbuf -oL dmesg --color=always --follow > dmesg.$time.log & disown
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    stdbuf -eL epiphany --private-instance
https://webglsamples.org/aquarium/aquarium.html 2>epiphany.$time.log &
disown
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    for i in $(seq 1 120); do
   </div>    sleep 1
   <br>    sync
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    done
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    reboot
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    <br>
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    The visible effect of this is:
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    * I see the web page open and fish swimming around the aquarium
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    * After a couple of seconds one of a few things will happen:
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      1. The screen and mouse pointer completely freezes
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      2. The graphics will glitch out (partially, improperly rendered etc.)
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      3. Sometimes the web page will just go blank but I'll be able to move
the mouse and close it
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    * After this, there is about an 80% chance that my script will actually run
the `reboot` command; the other 20% of the time I have to power off manually
    <br>
    <br>The errors I'm seeing in the dmesg log are various but
here's a few of them:
    <br>* WARNING: CPU: 12 PID: 232 at
drivers/gpu/drm/nouveau/nvif/vmm.c:68 nvif_vmm_put+0x6a/0x80 [nouveau]
    <br>* nouveau 0000:02:00.0: fifo: SCHED_ERROR 06 []
    <br>* nouveau 0000:02:00.0: fifo: runlist 0 update timeout
    <br>* nouveau 0000:02:00.0: gr: TRAP ch 3 [00fee57000
WebKitWebProces[1328]]
    <br>* nouveau 0000:02:00.0: gr: GPC0/PROP trap: 00000020
[RT_HEIGHT_OVERRUN] x = 336, y = 1176, format = 11, storage type = 0
    <br>
    <br>There is also an error that occurs /before/ I run my script at
bootup which is
    <br>* nouveau 0000:02:00.0: bus: MMIO write of 80000136 FAULT at
10eb14 [ IBUS ]
    <br>
    <br>From epiphany I'm seeing errors like:
    <br>* Gdk-Message: 09:45:34.493: Error reading events from display:
Connection reset by peer
    <br>* Gdk-Message: 09:53:08.281: Error flushing display: Broken pipe
    <br>* WebKitWebProcess: ../libdrm-2.4.100/nouveau/pushbuf.c:723:
nouveau_pushbuf_data: Assertion `kref' failed.
    <br>* nouveau: kernel rejected pushbuf: Invalid argument
    <br>
    <br>I ran the script 10 times and I've uploaded the full logs
here:
    <a
href="https://easyupload.io/ieil63">https://easyupload.io/ieil63</a>
    <br>
    <br>Regards
    <br>Geoffrey Allott
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