Whenever I restart the X session, either from a suspension or a screen lock, the screen is a mesh of lines where I can not even see the mouse. To make it work I switch to another session (say, Ctrl+Alt+F1) and then go back to the X session (Ctrl+Alt+F7). After a few seconds where nothing responds to the mouse the session becomes active again and all fine. This workaround has allowed me to keep working but it's not ideal. A permanent solution to this would be great.
I have an ATI Radeon HD 8600M and I'm using Xubuntu 14.04, with the ATI drivers (fglrx
). If I use open-source drivers (X.org) the problem dissapears. However I'm not happy with this solution because I need propietary drivers to run some Matlab functionalities and other applications.
Another interesting info is that when I use two screens (laptop + external Dell monitor via HDMI) the problem only affects the laptop screen.
So I have the weird combination of, yes, it is the ATI driver, but only for the laptop screen....what could it be?