Ubuntu
xserver-xorg-video-intel package

  1. Bug #1218224
  2. Comment #4

Comment 4 for bug 1218224

Revision history for this message
Cefn (6-launchpad-net-cefn-com) wrote : Re: VGA Output not activated

OK, so attached is the result of a two-reboot cycle.

Initially (first reboot) I didn't have the monitor attached at all.

Then I ran your diagnostic scripts (output in post-reboot-unattached).

Then I attached the monitor.

Then I ran your diagnostic scripts (output in post-reboot-attached-after).

Throughout this process, no signal was received by the monitor, even though the Gnome randr GUI detects the correct manufacturer, shows that the monitor is on, and indicates that it is using the correct resolution.

I finally rebooted the laptop WITH THE MONITOR ATTACHED DURING the reboot and that was the only way it successfully started sending a signal.

I then ran the diagnostic scripts for a third time (output in post-reboot-attached-during).

I have not bothered to work with a suspend/resume condition, as it happens whenever the monitor is not attached on boot anyway, whether or not I suspend/resume.