This sounds like the same symptoms as bug #546678. Do you guys still get the same issues if you 'sudo apt-get purge gnome-screensaver' ?
Another workaround was to run 'xgamma -gamma 1.0' when the black screen occurs (see https://bugs.launchpad.net/ubuntu/+source/xorg- server/+bug/546578/comments/15). -- Logout after switch user cause black screen https://bugs.launchpad.net/bugs/561538 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
