Dear Maintainer,
* What led up to the situation? *
Upgrade from Debian 10 to Debian 11. Without
firmware-amd-graphics from AtiHowTo guide acceleration
doesn't work, with it, i recieve SegFault on almost all apps.
You can check my detailed report at
https://forums.debian.net/viewtopic.php?f=7&t=150983.
* What exactly did you do (or not do) that was effective (or ineffective)? *
I copied /lib/x86.../dri from my Ubuntu Focal Fossa (there,
acceleration seems to work OK) and moved it to
my Debian 11 system. glxinfo & glxgears doesn't work,
acceleration too, but at least i can play
accelerated by VDPAU videos in VLC.
I don't know very much about Linux,
so you can ask me for more details, thanks.