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[Bug 709461] Re: Application windows can sometimes fail to display and will mask regions of the screen

To: compiz@xxxxxxxxxxxxxxxxxxx
From: Helge <709461@xxxxxxxxxxxxxxxxxx>
Date: Thu, 26 May 2011 11:39:07 -0000
Reply-to: Bug 709461 <709461@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I have somewhat similar symptoms, and I have found a [b]reliable way to reproduce them[/b].
It seems that [b]every time[/b] I minimize a window, it leads to severe graphical corruption and very strange behaviour in Unity.

A minimized window refuses to reappear when I press the launcher shortcut or top panel. Pressing Alt+Tab seems to be the only way to get it back, but it will have some severe graphical corruption when resized and moved around.
See the attached video.

Lenovo ThinkPad X200 with Intel 4500MHD graphics controller.
Ubuntu 11.04 amd64 fully updated. Universe and multiverse repositories enabled.
uname -srm: Linux 2.6.38-8-generic x86_64

If you need any additional info, like installed package list, changed
configurations etc. please let me know.

** Attachment added: "Severe graphical corruption after minimizing windows in Unity"
   https://bugs.launchpad.net/unity/+bug/709461/+attachment/2143446/+files/Unity_minimize_bug003.ogv

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https://bugs.launchpad.net/bugs/709461

Title:
  Application windows can sometimes fail to display and will mask
  regions of the screen