Re: [REGRESSION]: nouveau: Asynchronous wait on fence

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On 10/31/23 04:18, Linux regression tracking (Thorsten Leemhuis) wrote:
On 28.10.23 04:46, Owen T. Heisler wrote:
#regzbot introduced: d386a4b54607cf6f76e23815c2c9a3abc1d66882
#regzbot link: https://gitlab.freedesktop.org/drm/nouveau/-/issues/180

## Problem

1. Connect external display to DVI port on dock and run X with both
    displays in use.
2. Wait hours or days.
3. Suddenly the secondary Nvidia-connected display turns off and X stops
    responding to keyboard/mouse input. In *some* cases it is possible to
    switch to a virtual TTY with Ctrl+Alt+Fn and log in there.

You thus might want to check if the problem occurs with 6.6 -- and
ideally also check if reverting the culprit there fixes things for you.

Hi Thorsten and others,

The problem also occurs with v6.6. Here is a decoded kernel log from an untainted kernel:

https://gitlab.freedesktop.org/drm/nouveau/uploads/c120faf09da46f9c74006df9f1d14442/async-wait-on-fence-180.log

The culprit commit does not revert cleanly on v6.6. I have not yet attempted to resolve the conflicts.

I have also updated the bug description at
<https://gitlab.freedesktop.org/drm/nouveau/-/issues/180>.

Thanks,
Owen



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