No signal on DisplayPort after switch off both screen (close the lid) and resume with extended screen layout. Trying to switch layout for couple times, the external display never come back.
[13367.372763] WARNING: CPU: 0 PID: 2859 at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:822 intel_wait_for_pipe_off+0x1bc/0x1d0 [i915]() [13367.372766] pipe_off wait timed out [13367.372967] [<ffffffffa075badc>] intel_wait_for_pipe_off+0x1bc/0x1d0 [i915] [13385.143381] WARNING: CPU: 0 PID: 2859 at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:822 intel_wait_for_pipe_off+0x1bc/0x1d0 [i915]() [13385.143384] pipe_off wait timed out [13385.143585] [<ffffffffa075badc>] intel_wait_for_pipe_off+0x1bc/0x1d0 [i915] [13616.594419] WARNING: CPU: 0 PID: 2859 at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:822 intel_wait_for_pipe_off+0x1bc/0x1d0 [i915]() [13616.594422] pipe_off wait timed out [13616.594562] [<ffffffffa075badc>] intel_wait_for_pipe_off+0x1bc/0x1d0 [i915] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1211394 Title: ThinkPad X201 external screen might blank when connected over displayport. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1211394/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
