after my computer locks itself and goes into standby, when I wake it it freezes and the desktop that filled the entire screen is only a part of it. it doesn't happen every time the computer goes into standby but it does most of the times.
I have a dual-monitor setup of LG flatron2242T and a samsung tv connected by hdmi. linux mint 15 cinnamon 1.8.8. gpu:Intel Corporation Xeon E3-1200.
Edit: I found out it only locks itself, and doesn't display the lock screen, once the password is entered it returns to normal.