Klaus,

would it be possible for you to provide the 2 pieces from the failing
system where Xorg failed (not the AMDGPU, but the other):

a) lcpci | grep 'VGA\|3D'

b) The "/var/log/Xorg.0.log" when trialling the previous version from
xserver-xorg-core=2:21.1.5-1
(or from the prior, working version, and which version that was)

regards,

Ralph.

On Wed, Jan 04, 2023 at 11:49:22AM +0100, Klaus Ethgen wrote:
> Hi Mark,
>
> Am Mi den 4. Jan 2023 um 11:27 schrieb Mark Hindley:
> > Sorry, I misread this (combined with my own preconceptions that GPU support
> > might be incomplete)
>
> Well, could be, I don't want to rule it out. Bit it worked with the
> version before.
>
> > On the box that fails, is the user you run start as in the video group?
>
> Well, I use wdm to login and as wdm is started by root, no, root is not
> implicit member of video. But that doesn't matter.
>

> Regards
>    Klaus
> -- 
> Klaus Ethgen                                       http://www.ethgen.ch/
> pub  4096R/4E20AF1C 2011-05-16            Klaus Ethgen <Klaus@???>
> Fingerprint: 85D4 CA42 952C 949B 1753  62B3 79D0 B06F 4E20 AF1C

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