Intel 855GM: Detected a hung GPU, disabling acceleration.

[Petr Dlouhý]

It is not possible to run Xorg with Intel driver on my Intel 82852/855GM graphic card (I have similar problems with this graphic card at leas since Ubuntu 9.10). Ubuntu runs fine with Vesa driver (of course without acceleration). The Xorg server freezes shortly after start leaving computer with still image on monitor and moving mouse cursor. The Linux kernel is still responding (ssh, sysrq), but after restarting Xorg computer freezes completely.

[Petr Dlouhý (petr-dlouhy)]

I am using newly updated Maverick.

[Philip Muškovac (yofel)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage . I have classified this bug as a bug in xserver-xorg-video-intel.

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Petr Dlouhý (petr-dlouhy)]

Over the time, the problem transformed, but the originally reported bug seems to be still present. I remembered, that the fall of Xorg was caused by playing video in mplayer (I didn't take that into account, because Xorg used to fall without cause in past).
Now, after some updates, I am able to run Xorg again with Intel driver (after more than a year). Although, the bug pops-up, when I try to play a video in mplayer. Occasionally (with WMV video format regularly), the video stops to be displayed (black or blue surface is shown instead). I am not able to play any video until Xorg restart.
The mplayer is outputing this:
X11 error: BadAlloc (insufficient resources for operation)

and xorg.log tails with same lines as before

[Petr Dlouhý (petr-dlouhy)]

I have one another observation: the problem occurs only with xv output. With x11 it works again (in the same session).

[bugbot (bugbot)]

This bug appears to involve a freeze of Xorg, probably due to a GPU
lockup in the kernel drm code, in a version of Ubuntu before
natty (or we couldn't determine the version from the report).

The X team has been investigating GPU lockups in Intel's video driver
during the natty development cycle. Many of these issues are now either
resolved or at least well understood. There are also better tools for
capturing and diagnosing these problems, but these tools are either
unavailable or incomplete in older versions of ubuntu, so debugging this
issue on pre-natty versions is unlikely to be productive. We're closing
out the bug report for this reason.

However, you may not yet be ready to upgrade to natty. It turned out
that a large number of these freezes were solved by updates to the
kernel. Thus, updating your kernel may be a workaround for you.
Updated kernel packages are available a variety of places, such as:

  http://kernel.ubuntu.com/~kernel-ppa/mainline/

If you find a newer kernel fixes it, and think the fix should be
backported to earlier Ubuntu versions, please file a request against the
linux kernel in Ubuntu, indicating the broken and the fixed kernel
versions.

If it does not fix it, and you do not wish to upgrade to natty, please
follow up through technical support channels (e.g. http://askubuntu.com
is a good place for free support for older Ubuntu versions).

On the other hand, if you find after upgrading to natty and updating to
latest that you still experience GPU lockups, please reproduce the
problem, ssh into the frozen machine, and collect the file
/sys/kernel/debug/dri/0/i915_error_state and the output of 'dmesg >
dmesg.txt', and attach both to a new bug report.