[i965gm] system unresponsive after recovery from screensaver

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Please include the following additional information, if you have not already done so (pay attention to lspci's additional options), as required by the Ubuntu Kernel Team:
1. Please include the output of the command "uname -a" in your next response. It should be one, long line of text which includes the exact kernel version you're running, as well as the CPU architecture.
2. Please run the command "dmesg > dmesg.log" after a fresh boot and attach the resulting file "dmesg.log" to this bug report.
3. Please run the command "sudo lspci -vvnn > lspci-vvnn.log" and attach the resulting file "lspci-vvnn.log" to this bug report.

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please attach your X server configuration file (/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.0.log) to the bug report as individual uncompressed file attachments using the "Attachment:" box below. Could you please also try to run without any /etc/X11/xorg.conf and let Xorg autodetect your display and video card? Please also attach the /var/log/Xorg.0.log from this attempt. Thanks in advance.

> uname -a
Linux amilo 2.6.27-12-generic #1 SMP Thu Feb 5 09:26:42 UTC 2009 x86_64 GNU/Linux

As for autodetect of display and video card: my current Xorg.0.log must contain the autodetected display and video card because I never messed around with that file ever.

Marking as invalid in gnome-screensaver. It looks like an issue with multiple GL contexts.

I've got exactly the same problem. The only difference is that I use random screen savers and when the display is frozen I see the screen saver image frozen and not the desktop wallpapaer as Bernhard does.
I'll attach same files you asked Bernhard for.

My uname -a output is:
Linux U-PT250 2.6.24-24-generic #1 SMP Thu Feb 19 08:00:07 UTC 2009 i686 GNU/Linux

Thank you for assistance.
Fabio

My current Xorg.0.log must contain the autodetected display and video card because I never messed around with that file ever.

Are we sure this involves showing only the wallpaper? My laptop freezes under near-identical conditions, but shows only a blank screen (actually it is powered off, not just black or blank), as reported at https://bugs.freedesktop.org/show_bug.cgi?id=22383#c2

@Mike: I guess there can be variations, as FabioV also had a slightly difference experience. But this bug has to do with a freeze after recovery from screensaver.

Well, next I'd like to forward this issue upstream, but first it must be retested on latest development version of Karmic to make sure the issue still happens there with the latest code. ISO images are available at http://cdimages.ubuntu.com/releases/karmic/. If you can reproduce it in the LiveCD environment, you shouldn't need to modify your installed system. Also please attach a fresh Xorg.0.log and dmesg from this testing.

I actually stopped having freezes after recovery from screensaver when I switched from intrepid to jaunty. So there's one thing that worked better for me in jaunty. :)
Cannot reproduce it anymore on my machine at the moment.

Thanks for letting us know the issue is resolved.

Well, not sure if this is "Fix committed". I didn't have anymore problems with it since jaunty, but Mike.lifeguard has. He might have a different type of freeze though.

I /think/ we're OK... I haven't needed to leave my laptop running overnight in a while, but I'll do so tonight.