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GPU Lockups on AMD A6-3400M

Submitted by Adam Pigg @piggz

Assigned to xf86-video-ati maintainers

Link to original bug (#69235)

Description

Created attachment 85648
dmesg when getting regular lockups

Ive tried kernels from 3.8 to 3.11 and Mesa from 9.0.2 to 9.2 and have the same set of problems.

They are intermittent, ie, sometimes the open-source driver works (like now!) and others it doesnt (like my previous boot 30 minutes ago!)

It seems to fail approx 4 out of 5 times or so.

When it doesnt work, it seems to fail in in 2 different ways:

  1. regular gpu lockups (every 10 seconds) - machine is unusable
  2. a single gpu lockup early in the boot which prevents dri and 3d accel, but can use 2d X

When is works ok, i have no gpu lockups and 3d accell works fine.

I will attach some logs.

**Attachment 85648**, "dmesg when getting regular lockups":
regular_lockups_dmesg.txt
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