I'm still ready to try anything you think that can be useful. Marc Brice Goglin a écrit :
You can add:
deb http://snapshot.debian.net/archive pool mesa
to your /etc/apt/sources.list
Then run apt-get update. At this point, apt-cache policy libgl1-mesa-dri
will show you a lot of available versions. You can install one with
apt-get install libgl1-mesa-dri=6.5.1-0.6
6.5.1-0.6 is the one from Etch. If you can find the first buggy version,
that would help us a lot.
Don't forget to remove the new line in /etc/apt/sources.list after
testing all this.
Brice