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["Gregory M. Kapfhammer" <gkapfham@xxxxxxxxxxxxx>]

This bug also influences my computer.  I am currently running a Dell
Ultrabook XPS 13 and Ubuntu 12.04.  Here are some additional details
that I hope will help with the ultimate resolution of this defect.  I
would also appreciate any feedback that people can give me for ways to
work around this problem until it is resolved.  I am also glad to post
any additional information if you think that it would be useful in your
attempts to handle this matter.

-- Here are the details about the Compiz versions that I have available:

apt-cache show compiz | grep Version: | awk '{ print $2 }'
1:0.9.7.8-0ubuntu1.2
1:0.9.7.6-0ubuntu1

-- I noticed the flickering when I first installed Ubuntu 12.04.  In particular, I very frequently saw the flickering
when I pressed Super-s to activate Expo and then drag a window from one desktop to another.  Currently, I have 
configured Expo to display a 3x3 grid.

-- I also saw the flickering when I use the key combination Ctrl-Alt-Left Arrow, etc to navigate to the 9 desktops
that I have available for use.  Turning off the snapshots of the individual screens still does not resolve the 
flickering issue.

-- Previously I followed the instructions in this bug report and several other Web sites to install the Compiz 
Preproposed PPA and I thought that this had resolved the issue.  That is, I did not see flickering in the second of 
the two scenarios that I previously outlined; I regret that I did not rigorously test the first scenario after installing
the PPA.  However, now I am wondering whether or not this upgrade actually installed because, as you can see, it does not appear in the output from apt-cache.  I would appreciate any feedback on this matter.

-- However, as several of the other posters have reported, in early to mid July, I allowed Ubuntu to run an upgrade
that seems to have caused the flickering to come back.  So,  I downgraded to 1:0.9.7.6-0ubuntu1 in the hopes that 
I could try to reinstall Compiz Preproposed from the PPA.  However, if I add the repository, run an update, and 
then an upgrade, I always end up back at the 1:0.9.7.8-0ubuntu1.2 that definitely causes a lot of flickering.  Is
there a way to get to the PPA's version of Compiz even if 1:0.9.7.8-0ubuntu1.2 is available?
 
-- Right now, I am currently running 1:0.9.7.6-0ubuntu1.  As before, the flickering frequently occurs when I move
a window from one desktop to another.  However, the flickering seems to be at a minimum when I am using 
Expo to move from one desktop to the next.  I have tried a wide variety of Compiz configurations (like disabling
the Sync to Vblank in the OpenGL plugin) and I have noticed that none of them completely remove the flicker
and they may cause additional problems in the display.  I would appreciate learning about any Compiz configurations that normally help to resolve this problem.

Thanks for your hard work on fixing this defect!  Please contact me with
feedback or requests for more details.

-- 
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https://bugs.launchpad.net/bugs/862430

Title:
  window flicker for a short time after switching workspaces

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