It's a xorg bug. I post the solution here: http://ubuntuforums.org/showthread.php?t=587668
-- Ubuntu freezing with toshiba laptop https://bugs.launchpad.net/bugs/154069 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
