Immediately after it hangs: * $ sudo cat /sys/kernel/debug/dri/0/i915_error_state no error state collected * 'DISPLAY=:0.0 xrandr' seems to work. 'DISPLAY=:0.0 xrandr --output LVDS1 --auto --output HDMI2 --off' turned off the monitor, but then never returned. * 'DISPLAY=:0.0 gnome-terminal' just hangs * when screen dims due to idle (which i've set to 2 minutes), keyboard input will brighten the screen again.
then I tried 'sudo stop lightdm', and slept 120 seconds. Still, no error state in 'i915_error_state' Then, i tried 'chvt 1', and gave it 120 seconds to return. at this point 'dmesg' shows the trace, but /i915_error_state still says "no error state collected" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1097315 Title: Xorg freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1097315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs