I've also seen this both on karmic and on lucid. I've no easy way to reproduce it, nor a way to fix it (other than log out, log back in or reboot).
One thing I noticed yesterday, was that 'xset dpms force off' would turn off the monitors (both LCD of laptop and external monitor) but then after a few seconds they'd be turned back on. ** Changed in: gnome-power-manager (Ubuntu) Status: New => Confirmed -- power management does not consistently power down inactive monitor https://bugs.launchpad.net/bugs/473705 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