Might I suggest, you turn the screensaver off.
I've recently aquired a Dell XPS L502S and installed Backtrack 5 R1. Everything work fine, except the screensaver. When the computer is idle and I try to get it to work, it doesn't come back. Instead, I get a white screen, and I cannot do anything. After that I always have to restart the computer.
Can someone help me?
Thanks a lot.