In a first test attempt, I didn't get the gray blocks lockup, but X was frozen the same way (only hard poweroff was possible). I'm attaching this Xorg log.
In a second test attempt, I got the gray blocks lockup. In this case, Xorg log has nothing special. Last lines are:
Synaptics DeviceOff called
(II) AIGLX: Suspending AIGLX clients for VT switch
I've tested unggnu's package by following steps at <https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/127101/ comments/ 22> and the bug is still present, however I'll wait to test 12ubuntu8 before reopening this bug.
In a first test attempt, I didn't get the gray blocks lockup, but X was frozen the same way (only hard poweroff was possible). I'm attaching this Xorg log.
In a second test attempt, I got the gray blocks lockup. In this case, Xorg log has nothing special. Last lines are:
Synaptics DeviceOff called
(II) AIGLX: Suspending AIGLX clients for VT switch