The fault appeared again. I ssh'd into the box and stopped the X server (sudo service gdm stop). This killed the X server but still the monitor stayed off. I guess this implies it's a kernel bug.
-- [965g] Regression: monitor sometimes does not wake up from sleep https://bugs.launchpad.net/bugs/582938 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