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When opening new windows in my Ubuntu 11.04 sometimes they are hidden behind the panel. I can grab them while pressing Alt+Button 1 but I would like to solve it so that they appear where they should.

The machine where this is happening is an upgraded one and I have seen in several new installations that this is not the expected behaviour.

You can see it in the following link:

Screenshot of the problem

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There's a similar bug in Oneiric, but couldn't find anything for Natty. Perhaps you should file a bug? – Christopher Kyle Horton Sep 28 '11 at 2:52
up vote 4 down vote accepted

I had this too on a machine that was all the way upgraded from Intrepid and the problem did not appear for a dummy new user I created for investigation purposes. This is how I solved it:

I logged out of unity, switched to a virtual terminal hitting AltF1, logged in as root, killed all remaining processes from my usual login with killall -u <login>, did a cd /home/<login> and a mv .gconf .gconf-old. When logging back in, the issue had disappeared with a lot of others for the price of losing some configurations which I considered a bargain.

After some diffing .gconf with .gconf-old with meld, I reached at the conclusion that some pre-natty compiz settings were the most probable cause, but your mileage may vary.

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I had the same problem in Ubuntu 12.04 with GNOME. Indeed it could be fixed with compiz: enable "Place Windows" in Category/Windows Management.

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sudo apt-get install compizconfig-settings-manager – Antonios Hadjigeorgalis Feb 18 '14 at 17:21

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