I installed a kernel with the patch referred to in http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=526169#41 and the tiling persists. However I managed to solve the problem by setting the Tiling option to false as mentioned in https://bugs.freedesktop.org/show_bug.cgi?id=21246#c10
Currently my /etc/X11/xorg.conf reads Section "Device" Identifier "Intel Corporation 82852/855GM" Driver "intel" Option "Tiling" "false" EndSection And I'm using a Thinkpad R50e. -- To UNSUBSCRIBE, email to debian-x-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org