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

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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. In any
>    case, shutdown/reboot after this happens is *usually* not successful
>    (forced power-off is required).
> 
> This started happening after the upgrade to Debian bullseye, and the
> problem remains with Debian bookworm.
> [...] 

Thanks for your report. With a bit of luck someone will look into this,
But I doubt it, as this report has some aspects why it might be ignored.
Mainly: (a) the report was about a stable/longterm kernel and (b)it's
afaics unclear if the problem even happens with the latest mainline
kernel. For details about these aspects, see:
https://linux-regtracking.leemhuis.info/post/frequent-reasons-why-linux-kernel-bug-reports-are-ignored/

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.

That might help getting things rolling, but it's a pretty old
regression, which complicates things.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.




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