[Bug 2637] New: Fatral server error forces system shutdown

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https://bugs.freedesktop.org/show_bug.cgi?id=2637          
     
           Summary: Fatral server error forces system shutdown
           Product: xorg
           Version: 6.7.0
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Server/general
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: roberto.derenzi at unipr.it


I think this might be related to other instances of server crash like 
659 1390 2496.
Symptoms: X freezes and the system shuts down. The console is not responding. It
is not possible to abort X with CtrlAltBackspace as it usually is.
I cannot log into my machine even with ssh from another machine. Hence I have to
force a restart by hardware reset.

 This happens to me reproducibly when trying to look at specific e-mails with
Mozilla, but also, not as reproducibly, when moving the Mozilla window.

Xorg.0.log ends on 
Fatal server error:
Caught signal 11.  Server aborting

The corresponding lines in messages, starting from last regular operation to
restart, are

Mar  1 16:33:54 pc34 kernel: input: USB HID v1.00 Mouse [413c:3010] on
usb-0000:00:1d.1-1
Mar  2 10:02:18 pc34 gconfd (derenzi-4126): Received signal 1, shutting down cleanly
Mar  2 10:02:18 pc34 gconfd (derenzi-4126): Exiting
Mar  2 10:02:18 pc34 gdm[3665]: gdm_slave_xioerror_handler: Fatal X error -
Restarting :0
Mar  2 10:02:18 pc34 gdm(pam_unix)[3665]: session closed for user derenzi
Mar  2 10:02:19 pc34 su(pam_unix)[4272]: session closed for user root
Mar  2 10:03:53 pc34 syslogd 1.4.1: restart.


A couple of times I got a warning at startup saying that the CPU shut down
because it was too hot (however the air from the fan was cool and during the
subsequent startup - a couple of seconds later - dmesg  reported 51 C)


System: Dell Inspiron 8600 with ATI Mobility Radeon 9600 M10
Fedora Core 2 
kernel 2.6.10-1.12_FC2
xorg-x11 6.7.0-11          
     
     
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