Bug 242343

Created attachment 156023 [details]
Log messages from gdm with debug enabled

Marking this urgent because can't log in at all because of this bug.

This bug might have surfaced again because it seems to describe what has started
happening to me as of approx 18th Jan 2008: the system is crashing when I try to
login, and the following message has appeared in my dmesg log:

gdm-binary[2642]: segfault at 73694c7f eip 4c7c3092 esp bfa14ed0 error 6

I am running gdm-2.20.2-2.fc8. In order to login, I *seem* to need to clean out
my user's files and directories from /tmp. When login fails, I can login via a
serial console and discover that the .xsession-errors file contains a message
from the X server, complaining that a resource is temporarily unavailable.

I have found this back-trace in one of the gdm log files:

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x81) [0x80cdfb1]
1: [0xb7f59420]
2: /usr/lib/xorg/modules//libfb.so(fbCopyAreammx+0x21e) [0xb7c3494e]
3: /usr/lib/xorg/modules//libfb.so(fbCompositeCopyAreammx+0x66) [0xb7c34a16]
4: /usr/lib/xorg/modules//libfb.so(fbComposite+0x57f) [0xb7c279df]
5: /usr/lib/xorg/modules//libxaa.so(XAAComposite+0x261) [0xb7be0f31]
6: /usr/bin/X [0x8177706]
7: /usr/bin/X [0x8174006]
8: /usr/bin/X(CompositePicture+0x153) [0x815a6c3]
9: /usr/bin/X [0x81604ff]
10: /usr/bin/X [0x815d8a5]
11: /usr/bin/X [0x8150b0e]
12: /usr/bin/X(Dispatch+0x1aa) [0x808880a]
13: /usr/bin/X(main+0x49a) [0x807054a]
14: /lib/libc.so.6(__libc_start_main+0xe0) [0x426c5390]
15: /usr/bin/X(FontFileCompleteXLFD+0x1f1) [0x806f831]

FYI, I have a Radeon 9550 card, and have disabled Desktop Effects. Here is my
Device section:

Section "Device"
        Identifier  "Radeon 9550"
        Driver      "radeon"
        Option      "AGPMode" "8"
        Option      "GARTSize" "128"
        Option      "RenderAccel" "on"
        Option      "EnablePageFlip" "on"
EndSection

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