[Pkg-games-ubuntu] [Bug 757331] [NEW] Display freeze randomly when using Unity desktop (particularly with Windows apps run using wine)

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Ubuntu version: 11.04 (Natty) Beta 1, not fixed as of 11/04/2011

I've read the other reports on freezes with Unity, but none are similar
to mine, so I open a new bug.

Unity can work just fine for several hours and freeze the desktop suddendly, mouse move, bug nothing react, even the seconds on the clock of the notification zone are not updating. I have to kill X and login again.
Note that this doesn't happen with classic GNOME desktop (Ubuntu (Classic)).

I found a way to reproduce it quite easily, it seems to appears more
often when using Windows apps with wine or playonlinux:

1) Install playonlinux package from Ubuntu repositories
2) Once installed, launch PlayOnLinux
3) Click on "Install" to install a new Windows app
4) Select "Office" category, and select "Microsoft Office 2007"
5) Try to install MS Office (need a MS Office CD).

It'll freeze at one time, can be even before launching the MS Office
installer (for example when creating the wine prefix).

I've seen no traces on syslog or X.org log. So I can't provide any debug
log, I don't even was is causing the freeze exactly (X.org, compiz,
unity itself, wine?). That's why I provide steps to help to reproduce it
so you can try it by yourself.

Also the hardware I have is:

Machine: HP xw4600 Workstation (RV724AV)
CPU: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
GPU: ATI FireGL V3700 (RV620)
RAM: 4GB

Full hardware profile available here:
http://bpresles.free.fr/hardwareprofile.html

Also I tried both proprietary FGLRX and open source radeon drivers. Same
issue wether I use the proprietary or the open source driver.

** Affects: playonlinux (Ubuntu)
     Importance: Undecided
         Status: New

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Display freeze randomly when using Unity desktop (particularly with Windows apps run using wine)
https://bugs.launchpad.net/bugs/757331
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