I guess it is a driver bug but you can recheck it with the Vesa. If the problem still appears with the -vesa driver it is an Xorg bug.
Please try to get a proper backtrace described in this howto https://wiki.ubuntu.com/X/Backtracing . ** Changed in: xserver-xorg-video-intel (Ubuntu) Sourcepackagename: xorg => xserver-xorg-video-intel Status: New => Incomplete ** Summary changed: - x.org hangs during screensaver (100% CPU, no mouse cursor, no response) + periodic Xorg crashes w/ high cpu usage after OpenGL screensaver [965GM] -- periodic Xorg crashes w/ high cpu usage after OpenGL screensaver [965GM] https://bugs.launchpad.net/bugs/234768 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
