Xorg crashes by visiting webpage

[Tim Cole]

Binary package hint: xorg

Just upgraded from Ubuntu Gutsy 7.10 to Ubuntu Hardy 8.04.

By visiting the web page http://developer.pidgin.im/ticket/4986 Xorg will consistently crash every single time.
The crash is experienced as the screen going black momentarily and the gdm login being displayed, all previous gnome session state is lost.

In syslog the following message is displayed.

May 1 22:40:59 Elrond gdm[17905]: WARNING: gdm_slave_xioerror_handler: Fatal X error - Restarting :0

In xorg.0.log.old the following backtrace is logged.

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x7e) [0x80c780e]
1: [0xb7eec420]

Fatal server error:
Caught signal 11. Server aborting

Also note, I was using Firefox 3.0b5 to load the site, and I use nvidia binary video driver.

[Tim Cole (timothy-j-cole)]

Just confirming this is NOT a firefox issue. I have repeated the problem using epiphany web browser.

[Sense Egbert Hofstede (sense)]

This bug can be confirmed, since it has a duplicate.

[Sense Egbert Hofstede (sense)]

OK.
I think we need some more information. Can you please attach the following files:
/var/log/syslog
/var/log/Xorg.0.log
/var/log/gdm

[Sense Egbert Hofstede (sense)]

Ah, I forgot to ask you something else.
Epiphany and Firefox both use the mozilla engine. It could also be a bug in that program. Could you try to visit the same page with another browser like Konqueror or Opera?
Thanks.

[wvarner (winshipvarner)]

This appears to be the same bug as: Bug #213891

[Tim Cole (timothy-j-cole)]

Confirming this produces the same symptoms as Bug #213891.

[Tim Cole (timothy-j-cole)]

This does NOT reproduce using Opera Web Browser. Opera/9.27 (X11; Linux i686; U; en).

[dfszb (dnotob)]

It does not reproduce in browsers like dillo, w3m, elinks. Maybe Ubuntu users should stop using firefox until this is fixed?

[Sense Egbert Hofstede (sense)]

It looks like this bug is caused in the mozilla back-end thing that both epiphany and firefox use. But we need more information to determine what the problem is. Are there any files with mozilla, firefox or epiphany in the directory /var/crash?

[Tim Cole (timothy-j-cole)]

Nothing in /var/crash to do with firefox, epiphany or gecko.

[Sense Egbert Hofstede (sense)]

OK.
Can you also place /var/log/kern.log and /var/log/dmesg after you've reproduced the crash?

[Tim Cole (timothy-j-cole)]

As mentioned in the parent bug #212648

Workaround:
sudo ln -sf /usr/lib/nvidia/libwfb.so.xserver-xorg-core /usr/lib/xorg/modules/libwfb.so