I have the same problem.. The display becomes white and the only workaround is to kill the screensaver process.
Happens a lot when I log out or switch to another user. -- Screensaver causes display freeze https://bugs.launchpad.net/bugs/230931 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs