Bug#1025389: libgl1-mesa-dri: AIGLX error: dlopen of /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
severity 1025389 normal
thanks
Hallo,
* Fabio Pedretti [Mon, Jan 02 2023, 10:10:24AM]:
> Hi, i965 driver was removed, and replaced by iris, crocus and (gallium
> version of) i915.
>
> Did you have any reference to i965 in your configuration?
>
> cd /etc/ && grep -ri i965
>
> If so try to remove them, the system should be able to pick up the
> proper driver.
Okay, the devil is in the details. Multiple issues were involved. First,
I had a custom config snippet in xorg.conf.d which has activated the
intel drivers. I had to add this in earlier times in order to get rid of
tearing.
Another part in the puzzle was an environment setting which I have added
some time ago to work around crashes (first VLC crashes, then all
applications crashes in the major driver loader fu*up a few weeks ago).
So it seems like it was the MESA_LOADER_DRIVER_OVERRIDE=i965 which
actually triggered the Xorg.0.log messages which I have mistakenly
attributed to the incorrect X configuration itself.
So after changing all that, it's now apparently loading the proper
driver (iris in the log), with no errors, and most GL using applications
also work properly. VLC is still crashing on certain video formats but
that is probably due to some internal bug of VLC's vaapi usage (there is
another bugreport for that). But mplayer works mostly fine, except for
some gamma problems.
So in the end, it would be good if there was at least some notice about
the driver configuration change, something in NEWS.Debian, for example.
Maybe with a longer explanation in README.Debian. I can imagine that
more users with customized configurations are affected like I was.
Best regards,
Eduard.
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