I have the same issue on Intrepid with GM965/GL960 (X3100) hardware and blank screen saver. I manage to get this bug happening when I lock the screen.
Compiz appears to have problems when it switches desktops. That causes compiz.real process to spin at 100% CPU. Although the symptoms of this bug is X running consuming 100% CPU I think we need to eliminate compiz as the cause. There is a desktop switch when the screensaver is switched out. I've had the same symptoms occur when using rdesktop in full screen mode and I go to switch back to windowed mode. Another behaviour of compiz consuming 100% is ALT+SYSREQ (PRTSCR key) successfully switches off raw keyboard mode in X. This allows a switch to TTY1 using CTRL+ALT+F1. This is not possible when X is using 100%. Since i've not found anyone else making progress with this bug i'll try to move things forward a little. Could you all report the following information: * Does ALT+PRTSCR enable tty switching for you (might need to use ALT+SYSREQ+R)? * Does the bug occur with compiz disabled/uninstalled? References for the compiz problems (just some of them): https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/176589 https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/186058 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/285390 -- X hangs and not recoverable after screen saving or logout/login with intel 965gm https://bugs.launchpad.net/bugs/282081 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
