[i965gm] leaving fullscreen stuff freezes ubuntu 8.10

[Fulano]

Binary package hint: xserver-xorg-video-intel

Leaving fullscreen applications (firefox, screensaver, videos, youtube, etc) only shows wallpaper with nothing else. It's NOT locked (mouse moves)!

It happens at least once a day.

The most common example: When I move the mouse to leave screensaver, i see my wallpaper and my mouse cursor moving, but nothing else appears!

Even if I don't really leave fullscreen mode (for example, by just pressing ALT-TAB during a fullscreen video to change to another window) also causes the problem.

It's NOT completely locked (the mouse cursor moves).
It's not a Kernel Panic (caps lock does NOT blink/flash). I have installed a package that, whenever I have a Kernel Panic, it reports it to launchpad. But it is NOT reporting anything because it is NOT a kernel panic.

The screensaver "Blank Screen" is better than the 3D ones, but even using blank screen, i get this problem about once a day.

I tried the following things, but nothing worked:

- acpi=off, acpi=noirq, pci=noacpi
- changing my wireless to 802.11 b (ipw 4965 bug: see intrepid release notes)
- changing compiz to it's default values
- ctrl-alt-backspace doesn't work
- ctrl-alt-F1 doesn't work
- Alt-SysRq-B doesn't work
- AltGr-SysRq-B doesn't work
- Updating Ubuntu 8.10 doesn't work (i have all updates installed)

When this problem happens, the only solution is to SSH using another computer and reboot.

My Video Card (lspci | grep VGA):
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)

I'm using Ubuntu Intrepid 8.10, with Compiz in Gnome, with default options.

Thanks,
Thiago.

[[e-mail] (j.scott.gwin)]

Thank you for reporting this issue, it helps make Ubuntu better. Confirmed.

[Fulano (fulanociclanolixo)]

It's a pleasure to help! Thanks for answering! I hope this will be fixed soon...

[Bryce Harrington (bryce)]

We have a PPA with some new tools for debugging X freezes:

  https://launchpad.net/~ubuntu-x-swat/+archive/x-freeze-test

I know how irritating X freezes can be. They're also typically
quite hard to debug, but the information provided by these new
tools should help upstream figure them out.

You can help by doing the following:

 A. Install the PPA packages on Jaunty and boot kernel 2.6.30-rc2
 B. Reproduce your freeze
 C. ssh into the machine and run the steps to collect the info
 D. Attach the tarball of the results to this bug report

With this information, we'll be able to forward your bug upstream.

(For more information on triaging X freeze bugs, see
 https://wiki.ubuntu.com/X/Troubleshooting/Freeze )

[DavidDay (dday376)]

Experiencing the same issue in Kubuntu 9.04.

[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.