Re: gnome-shell stuck because of amdgpu driver [5.3 RC5]

From: Daniel Vetter
Date: Wed Sep 04 2019 - 04:37:53 EST

On Wed, Sep 04, 2019 at 09:17:16AM +0800, Hillf Danton wrote:
> Daniel Vetter <daniel@xxxxxxxx>
> >>
> >> Now 11:01pm and "gnome shell stuck warning" not appear since 19:17. So
> >> looks like issue happens only when computer blocked and monitor in
> >> power save mode.
> >
> > I'd bet on runtime pm or some other power saving feature in amdgpu
> > shutting the interrupt handling down before we've handled all the
> > interrupts. That would then result in a stuck fence.
> >
> > Do we already know which fence is stuck?
> It is welcomed to shed a thread of light on how to collect/print that info.
> Say line:xxx-yyy in path/to/amdgpu/zzz.c

Extend your backtrac warning slightly like

WARN(r, "we're stuck on fence %pS\n", fence->ops);

Also adding Harry and Alex, I'm not really working on amdgpu ...
Daniel Vetter
Software Engineer, Intel Corporation