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[Bug 561538] Re: Logout after switch user cause black screen

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Erik Meitner <erik@xxxxxxxxxxxxx>
Date: Fri, 07 May 2010 18:34:12 -0000
Reply-to: Bug 561538 <561538@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Aha. Bug 546578 led me to bug 555870. I caused the problem to happen, SSH'ed to the machine, found out which X display was active:
$ /usr/bin/ck-list-sessions:
Session2:
..snip..
	active = TRUE
	x11-display = ':0'
..snip..

Then did: 
$ export  DISPLAY=:0
and then:
$ sudo xrandr --output VGA1 --gamma 1:1:1 (Your output name may differ use xrandr w/o argument to find out)

This restored the display.  For me at least, this problem is related to bug 555870. 
Others should try the above also to verify if they are affected by the same bug.

-- 
Logout after switch user cause black screen
https://bugs.launchpad.net/bugs/561538
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