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Description of problem: Desktop freezes when closing firefox. Version-Release number of selected component (if applicable): GNOME Shell 3.2.2.1; Firefox 10.0.1 X.Org X Server 1.11.4 Release Date: 2012-01-27 X Protocol Version 11, Revision 0 Build Operating System: x86-01 2.6.32-220.4.1.el6.x86_64 Current Operating System: Linux kubik-main 3.2.6-3.fc16.x86_64 #1 SMP Mon Feb 13 20:35:42 UTC 2012 x86_64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.6-3.fc16.x86_64 root=UUID=3c30fccf-2545-44db-b057-ac7d07ae9314 ro rd.md=0 rd.lvm=0 rd.dm=0 quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0 KEYTABLE=pl2 LANG=en_US.UTF-8 Build Date: 08 February 2012 10:54:57PM Build ID: xorg-x11-server 1.11.4-1.fc16 Current version of pixman: 0.22.2 How reproducible: Every time. Steps to Reproduce: 1.Log in Gnome Desktop, and wait till the Shell launches 2.Launch Firefox 3.Open Random webpage (probably not necessary) 4.Close Firefox window using "X" button. Actual results: Whole Shell freezes. I can't open Activities nor Alt+Tab. The mouse is working but that's all. None button is responding. I can still switch to another tty and kill xorg to restore shell. Expected results: To close Firefox. Additional info: When multiple windows are opened, closing only one of them doesn't cause freeze. May be connected with Bug 713907, however freezes appear randomly there and problem is bound to Xorg. I am not sure if I could be able to move mouse if the X server was frozen.
After freeze I am unable to kill firefox proces (with is marked as defunct), and gnome-shell process. Only killing xorg or gdm-session-wor (the name is cut in ps -A output), causes the gnome restart. I don't know whether it's useful or not.
Revolutionary discovery. The freeze appears only if I close the window by clocking on "X" button on regular window. When I'll use File->Close(or Exit/Quit, I'm not sure how it's translated), or simply clock on the circle which appears when I move mouse to upper right corner of the window. But the problem doesn't lay in solely button. When two tab's are opened the window appears and asks if I want to close all of them. It doesn't affect freezing, so the broken code isn't directly describing the button.
So far I have found out that the trick from comment 2 doesn't always work. Freezes still appear randomly. More over it happens in other apps, like for example terminal. Booting previous kernel fixes the issue so I have renamed the bug and changed component to kernel.
Another discovery. Booting previous kernel does not solve the problem. It simply decreases frequency. At this point I must admit that I don't think my help might be useful any longer. I don't have any sure tips at the moment. Sorry.
Cau you provide bactrace of the crash? See https://fedoraproject.org/wiki/StackTraces#Firefox
The bug is not connected with Firefox and has been already fixed. Sorry for delay in reporting. It's gone since kernel update 3.2.7, but I can't say whether it's because of kernel or another package that was updated along with it.