ubuntu-x-swat team mailing list archive

[Jeb Walton <747205@xxxxxxxxxxxxxxxxxx>]

A quick update of my experience -

When booting with an external monitor connected to my laptop, I get to
the gdm login and successfully enter my password. Once the login event
starts occuring, the laptop monitor goes black and the external monitor
randomly and quickly flashes colors. I can switch to a terminal;
switching back with ctrl+alt+f7 shows BOTH screens as black, but I will
now seen a mouse cursor.

As a workaround I boot without the montor attached, go to System
Properties > Multiple Screens, turn OFF the laptop monitor, plug in the
external monitor.. and the display correctly comes up on the external.
Enabling the laptop monitor again will reproduce the behavior described
above.

I will be happy to do any diagnostic testing you need when I have access
to my machine tonight around 5pm EST. Please advise as to any logs etc
which may be of assistance. Thanks.

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https://bugs.launchpad.net/bugs/747205

Title:
  [arrandale] Black screen on all outputs when external VGA is connected