[Bug 69301] no screen on update from 3.12.0

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=69301

--- Comment #12 from Jakob Kummerow <jakob.kummerow at gmail.com> ---
Bisection result:

commit 56684ec5b050e6a392cb3e5324eda12a13413a57
Author: Alex Deucher <alexander.deucher at amd.com>
Date:   Wed Oct 30 10:18:37 2013 -0400

    drm/radeon: enable DPM by default on BTC asics

    Seems to be stable on them.


Which makes sense in so far as I have a Barts card, but obviously this commit
did not introduce the actual problem. I guess I'll have to bisect again with an
explicit radeon.dpm=1 kernel parameter.

FWIW, on 3.12 and earlier, I used to "echo low >
/sys/class/drm/card0/device/power_profile" by means of an init script, and
never had any issues with that.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.