ubuntu-x-swat team mailing list archive

[Antonio Rodriguez <taserian@xxxxxxxxx>]

One workaround is to use the User Switcher panel applet, instead of the
Indicator Applet Session. For some reason, the Indicator Applet Session
dims the display before switching; when you come back to that user's
session, you either get a dimmed screen (which you can fix with "xgamma
-gamma 1.0") or a completely black screen, which I've have to reboot
from.

The User Switcher returns you to the main login screen, instead of the
windowed user switch from Indicator Applet Session.

-- 
[RS480] black screen after a few user switches
https://bugs.launchpad.net/bugs/546578
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