It's simple.
It happens when i deminimize firefox or thunderbird window (previously minimized).
I use "ati" open source driver, but it happens with "radeon" open source driver too.
P.S.: About black screen when I log in, wallpaper gets black not all screen.
It's simple.
It happens when i deminimize firefox or thunderbird window (previously minimized).
I use "ati" open source driver, but it happens with "radeon" open source driver too.
P.S.: About black screen when I log in, wallpaper gets black not all screen.