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 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs -- universe-bugs mailing list universe-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/universe-bugs