Comment 57 for bug 1053959

I'm seeing bug #46044 and I'm not 100% convinced that it's a duplicate of this one, as marked.

I've been running xserver-xorg-video-intel 2:2.20.8-0ubuntu2.1~precise2, which I assume includes this patch, and seen the problem. Just downgraded to 2:2.17.0-1ubuntu4.2 as that was just released into precise updates.

I think it's closely related though. I do see the number of "inactive objects" in /sys/kernel/debug/dri/0/i915_gem_objects climbing sky-high if there's any animation in my AWN taskbar. The clock doesn't trigger it, but the dropbox sync icon does.

If I stop dropbox, it drops back down to normal levels; if I start dropbox and it's syncing (animated rotating arrows icon) the number of "inactive objects" grows by a few per second. I also see the same errors in /var/log/kern.log, over and over again, once the graphics corruption starts:

Oct 17 13:37:25 lap-x201 kernel: [266534.112127] [drm:drm_gem_create_mmap_offset] *ERROR* failed to allocate offset for bo 0

I've started syslogging the number of inactive objects to see if it reaches the same kind of heights. I've also logged a bug on Launchpad, so we can see whether a new driver release is needed in Ubuntu:

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1053959