ubuntu-x-swat team mailing list archive

[Bryce Harrington <bryce@xxxxxxxxxxxxxxxxxxx>]

This class of bug occurs because the video is being directed to the
wrong output device.  Unfortunately, the logs captured by the bug tool
are not indicating which output that is, so I can't give specific
directions, but here's what you need to do.

First, determine what outputs you have and what state they're in, by
logging in remotely and running 'DISPLAY=:0 xrandr'.  It might be a TV,
HDMI, VGA, or other output shown as on, when you know nothing is
connected to it.

Next, edit your xorg.conf and force the phantom output off.  In section
"Section "Device"" add the line:

    Option "monitor-LVDS" "LVDS"

Then the following new section:

    Section "Monitor"
            Identifier "LVDS"
            Option "Ignore" "True" 
      EndSection 

Replace "LVDS" with the name of your invalid output device.

If that solves it, we can quirk your hardware, but we need add some
additional info:

  * `sudo dmesg > dmesg.txt`
  * `sudo dmidecode > dmi.txt`
  * `xrandr --verbose > xrandr.txt`

Then attach all three of those files.


** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: Confirmed => Incomplete

-- 
[GM45] GDM/X stay in blank screen after enable KMS
https://bugs.launchpad.net/bugs/386848
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