I'm experiencing also this nasty bug:
$ lspci|grep -i graphic 00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02) 00:02.1 Display controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
After reading your technical comments, I don't know what to do in order to solve it. I'm using KUbuntu 14.04.
I'm experiencing also this nasty bug:
$ lspci|grep -i graphic
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
After reading your technical comments, I don't know what to do in order to solve it.
I'm using KUbuntu 14.04.