*** This bug is a duplicate of bug 79196 *** Don't know if this is the answer, but I would suggest two solutions to this problem. From within a terminal window make sure you have the color depth set in xorg.conf to 24 bits.
In the case of beryl move all files or directories named starting with .beryl somewhere else. Then restart your window manager. With any luck you should see everything work or at minimum work better then before. Good Luck -- Screen turns white when using beryl or desktop effects https://launchpad.net/bugs/79403 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
