Thanks for the background info!
I tried to obtain some backtraces with the xorg edgers packages, at the moment the only one I managed to get was the one appended at the end of the gdm log of the crashed session, which is attached.
Unfortunately gdb seems to hang X as soon as I attach it to the running instance of X, i.e. (but not the whole system, i.e. if I run sleep 30 && kill -s KILL $(pidof gdb) and then run gdb, first X locks up, but restores as soon as gdb gets killed). Also, a new X from gdb from a VT also locks up screen and inputs. I'll try later this evening with a second computer via ssh.
Thanks for the background info!
I tried to obtain some backtraces with the xorg edgers packages, at the moment the only one I managed to get was the one appended at the end of the gdm log of the crashed session, which is attached.
Unfortunately gdb seems to hang X as soon as I attach it to the running instance of X, i.e. (but not the whole system, i.e. if I run sleep 30 && kill -s KILL $(pidof gdb) and then run gdb, first X locks up, but restores as soon as gdb gets killed). Also, a new X from gdb from a VT also locks up screen and inputs. I'll try later this evening with a second computer via ssh.