https://bugzilla.kernel.org/show_bug.cgi?id=71891
--- Comment #5 from sdh sh.siddhartha@gmail.com --- Finally got around to doing this. And the result:
ec5891fbe1b078b191b25a13a2cc40b58fb7a693 is the first bad commit commit ec5891fbe1b078b191b25a13a2cc40b58fb7a693 Author: Christian König deathsimple@vodafone.de Date: Mon Apr 8 12:41:36 2013 +0200
drm/radeon: init UVD clocks to sane defaults
Just until we get proper DPM for that.
Signed-off-by: Christian König christian.koenig@amd.com Reviewed-by: Jerome Glisse jglisse@redhat.com Signed-off-by: Alex Deucher alexander.deucher@amd.com
:040000 040000 e76a3b2d04c78c73e66b5882155dbf1a26651282 900d340c7fc5a2952f1c4e38a17062e466a0b70a Mdrivers
So this has been present since 3.10, but was triggered only after installing the radeon driver (xf86-video-ati in Arch Linux). From 3.13 onwards, this is always triggered. But that may only be due to config changes in the Arch installer.
This is a one line edit, which later was shifted to a different function. Is enough to resolve the bug (which is still present in the latest kernel tested until v3.14-7247-gcd6362b).
Thanks