Update:
My system is now stable after uninstalling xscreensaver and using xlock instead (no more 3d graphics). I will leave it on like this for a while and afterwards I will enable compositing in my window manager (Xfce) and see if it becomes unstable again. Will keep you posted.
Update:
My system is now stable after uninstalling xscreensaver and using xlock instead (no more 3d graphics). I will leave it on like this for a while and afterwards I will enable compositing in my window manager (Xfce) and see if it becomes unstable again. Will keep you posted.