[Bug 344554] Re: screen flickers for 2-3 minutes and getting almost black when unpluging laptop

[Geir Ove Myhr]

There is a similar (but maybe not exactly the same) problem at bug
339200.

>From you log file it seems that you also have something calling an
Xrandr method over and over again (your Xorg.0.log is BIG, with the same
lines over and over again in the end -- the lines are added each time
Xrandr is called). On many monitors each Xrandr call may cause a blink,
and this is perfectly normal. The unnatural thing here (like in bug
339200) is that something is triggering this constantly.

You can keep an eye on the number of lines in Xorg.0.log by running
`while true; do wc -l /var/log/Xorg.0.log; done` before you unplug the
power (stop it with Ctrl+C). You should see the same number until the
Xrandr starts adding lines. On my computer, running xrandr once from the
command line adds about 100 lines.

To solve this problem, we have to figure out what program is calling
xrandr constantly. Could you try logging in with different window
managers (KDE, gnome, xfce, etc.) and see if this changes the behaviour?

-- 
screen flickers for 2-3 minutes and getting almost black when unpluging laptop 
https://bugs.launchpad.net/bugs/344554
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