ubuntu-x-swat team mailing list archive

[Bryce Harrington <682712@xxxxxxxxxxxxxxxxxx>]

Unfortunately, for these kinds of bugs the backtrace in Xorg.0.log tends
not to reveal much - just that the server was unable to communicate with
the GPU's "event queue" for some reason, and the server noticed graphics
data was not getting consumed.  That's what the 'EQ overflowing' message
means.  The backtraces don't show anything useful, they just point to
the mieqEnqueue routine where it noticed the GPU had hung.

Is anyone able to reproduce this on natty userspace + natty kernel?

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https://bugs.launchpad.net/bugs/682712

Title:
  x server crashes with: [drm:i915_gem_mmap_gtt_ioctl] *ERROR* Attempting to mmap a purgeable buffer