Hi all, I'm suffering screen tearing when moving windows around, watching videos, and some other situations. I've tried almost all popular desktop environments, including KDE, gnome(both traditional gnome 2 and new gnome 3), and xfce, the issue always exists except in gnome 3. For the main difference between these window managers, is gnome 3's window manager (mutter) is based on opengl, I think there may be some problems with my card's 2D acceleration. But'cat /proc/mtrr' shows everything is well. My graphical card is Nvidia Geforce GT240M, and I'm using the official Nvidia drivers.
Does anyone have any suggestions on how to troubleshoot this issue? Any help much appreciated!
