Comment # 21 on bug 74420 from Michel Dänzer

(In reply to comment #19)
> I am getting more detailed logs in the recent version. I hope those can help
> to solve the issue.

Unfortunately not, the backtraces in the log file just show where the driver
hangs due to the hanging GPU, they don't say anything about what caused the GPU
to hang.

Unless you can reproduce this problem with DPM disabled, please follow up on
bug 66963 instead of reopening this one.

*** This bug has been marked as a duplicate of bug 66963 ***