Re: [PATCH v5 1/1] drm/doc: Document DRM device reset expectations

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On Mon, 3 Jul 2023 12:00:22 -0300
André Almeida <andrealmeid@xxxxxxxxxx> wrote:

> Em 03/07/2023 05:49, Pekka Paalanen escreveu:

> > If an application freezes, that's "no problem"; the end user can just
> > continue using everything else. Alt-tab away etc. if the app was
> > fullscreen. I do that already with games on even Xorg.
> > 
> > If a display server freezes, that's a desktop-wide problem, but so is
> > killing it.
> >   
> 
> Interesting, what GPU do you use? In my experience (AMD RX 5600 XT), 
> hanging the GPU usually means that the rest of applications/compositor 
> can't use the GPU either, freezing all user interactions. So killing the 
> guilty app is one effective solution currently, but ignoring calls may 
> help as well.

I don't know if what I'm seeing is a GPU hang or just e.g. Proton
getting somehow stuck, all I see is a game freezing. I just Alt+tab
back to Steam, force-stop it, and then all is fine again. This is how
it should work regardless of why a game freezes.

However, even if it was a GPU hang, if I am on a display server that
actually handles GPU resets, I don't see why the rest of the desktop
would not be able to recover. Individual apps are each to their own,
but at the very least non-GPU apps and the DE itself should not have
any problem (DE components can simply be restarted automatically).


Thanks,
pq

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