Hi, I used Debian 7 (amd64 Gnome) in my desktop. Never had an issue. Yesterdar I installed Debian 8 (amd64 Mate) and constantly my screen becomes unreadable. In both cases I used the default drivers installed by the system, nouveau. HP Pavilion a6000n PC, 3G ram, 250G HDNvidia Geforce 6150SE nforce 430 I appreciate your help.

