Reproducible X server crashes when running compiz window animations with certain applications in focus (Quanta, Firefox w. Google Spreadsheets)

[Motin]

Binary package hint: xserver-xgl

I have two laptops, both running Hardy Heron 32-bit:
Dell XPS M1330 with Nvidia GeForce 8400M GS with the proprietary driver
HP Pavilion dv4000 with Intel 915GM using i810

When running Compiz, X will _always_ crash if any of the following tasks are being conducted:

1. Running Quanta Plus (confirmed by "everyone", see links below)
or
2. Running Firefox with Google Spreadsheets open (only confirmed by me so far)

Either X will crash directly or for certain when running a compiz effect such as Fade-out, Exposé or Minimize all.
(If useful: Using the nvidia driver, the crash symptoms are described in the following thread: http://ubuntuforums.org/showthread.php?p=5278972 )

Attached is a nvidia-bug-report.log generated after a Google Spreadsheet in Firefox crash.

The fact that compiz+quanta = crash seems to be evident across many places recently:

Fusion-Dev Bug #860: when quanta starts X-server segfaults
http://bugs.opencompositing.org/show_bug.cgi?id=860

Debian Bug#476930: compiz: quanta crashes X
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=476930

Linux Questions Forum: Quanta crashes, takes X along
http://www.linuxquestions.org/questions/linux-software-2/quanta-crashes-takes-x-along-626555/

OpenSUSE Forums: Quanta Crashes Desktop - Issue
http://forums.opensuse.org/applications/385575-quanta-crashes-desktop-issue.html

Fedora Forum: Quanta Crashes Gnome
http://www.fedoraforum.org/forum/showthread.php?t=181528

The general opinion currently seem to be that it is an X Server or driver bug instead of a Compiz one.
However, since at least I experience this regardless of using the latest stable (Hardy) Intel 915GM or Nvidia graphics drivers, together with the fact that there are _never_ any crashes when Compiz is disabled, I still feel that compiz is the correct package to report this against.

Since the most important tools many inclusing myself use everyday in web development is Quanta and Google Spreadsheets, this bug means that compiz is a no-no when working. Also, this problem has been evident since Feisty(!), I just always thought it was a i810-issue until I got my new laptop...

Hopefully this bug report can serve as a central location where we can confirm, investigate and track this bug across the different projects.

[Timo Aaltonen (tjaalton)]

xserver-xgl has been deprecated upstream, and removed from Intrepid. Closing the bug as won't fix.

[Motin (motin)]

Hmm wonder who nominated xserver-xgl... Appropriately added xorg-server as bug affected package.

[Bryce Harrington (bryce)]

[This is an automated message]

Hi motin,

Please attach the output of `lspci -vvnn` too.

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

[Jonathan Thomas (echidnaman)]

Not a compiz bug. (X crashes are either X driver or xserver bugs)