At the last weeks, when I exit LFS, the screen crashes. It also happens sometimes, when using SHIFT+F4, but then I can fix the problem, by pressing them again. BUT, 75% of times I exit LFS it happens.
Well, basically, there is just some crap on the screen (My English is not good enough to describe it), when it happens. I'm using U20. A bug?
Well, basically, there is just some crap on the screen (My English is not good enough to describe it), when it happens. I'm using U20. A bug?

LFS, but if that happens, I can press SHIFT+F4 again, to bring myself back to fullscreen and then again, and it won't happen. (Sometimes I have to repeat this action)