@fwyzard : did you try removing xscreensaver-gl package ? It implies also remove ubuntu-desktop, but it solved the crash on lid close for me, using xserver-xorg-video-intel + compiz + i945GM chipset.
@fwyzard : did you try removing xscreensaver-gl package ? It implies also remove ubuntu-desktop, but it solved the crash on lid close for me, using xserver- xorg-video- intel + compiz + i945GM chipset.