Need help to dig into X11 display freezing (Renoir, Xen/QubesOS)

[Yann Dirson]

> De: "Alex Deucher" <alexdeucher at gmail.com>
> À: "Yann Dirson" <ydirson at free.fr>
> Cc: "amd-gfx list" <amd-gfx at lists.freedesktop.org>
> Envoyé: Lundi 28 Juillet 2025 19:20:13
> Objet: Re: Need help to dig into X11 display freezing (Renoir, Xen/QubesOS)
> 
> On Sun, Jul 20, 2025 at 10:39 AM Yann Dirson <ydirson at free.fr> wrote:
> >
> > Hello there,
> >
> > For a few months I've been experiencing occasional freezes of the
> > X11 display
> > on my QubesOS RENOIR laptop.  The setup is pretty much standard for
> > QubesOS,
> > with both GPUs attached to dom0 and XFCE running there (and the
> > dGPU being
> > mostly not used).  Kernel is QubesOS' kernel-latest-6.15.4.
> >
> > Those freezes most often occur while the screen is blanked
> > by xscreensaver (suspend options fully deactivated here, as suspend
> > is broken
> > on this platform): in this case moving the mouse does not get the
> > unlock banner
> > displayed, the screen stays black... except the mouse pointer is
> > visible.  I can
> > also switch to other virtual consoles and interact with the system,
> > but was
> > never able to collect any evidence of something wrong being
> > detected.
> >
> > Occasionally it also happens (like yesterday) while I'm working,
> > and the X11
> > display just seems frozen, no clue if the input devices trigger
> > anything in
> > there.
> >
> > I guess something goes wrong but gets undetected by the driver.
> >  Any suggestion
> > as to extra logging/debug features to enable?
> 
> Is this specific to QubesOS or a general problem even on bare metal?

Actually this is my main machine so QubesOS is running most of the time.
I'm only booting bare metal on this box for targeted tests, and
never use it long enough then to see the problem trigger.

-- 
Yann