[Bug 77930] New: radeon regression after update to kernel 3.13.6 (stable) - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 77930] New: radeon regression after update to kernel 3.13.6 (stable)
Date: Fri, 25 Apr 2014 14:19:12 +0000	[thread overview]
Message-ID: <bug-77930-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=77930

          Priority: medium
            Bug ID: 77930
          Assignee: dri-devel@lists.freedesktop.org
           Summary: radeon regression after update to kernel 3.13.6
                    (stable)
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: raziel_theripper@yahoo.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 97956
  --> https://bugs.freedesktop.org/attachment.cgi?id=97956&action=edit
lspci

I have an Asus X550 series laptop with an AMD APU A8-5550M.
The integrated GPU is a 8550G and the dGPU is a 8670M.

After upgrading the kernel from 3.13.6 to 3.13.7 the machine becomes unbootable
and it freezes(black screen, possibly X not able to start). 

Setting radeon.runpm=0 at boot time doesn't help. 

After doing a bisect I've found the following commit to be the problematic one:

[drm/radeon] fix runpm disabling on non-PX harder.

Also, I have to mention that the bug seems to be reproducible on similar
hardware configurations, see: http://forums.gentoo.org/viewtopic-p-7529160.html

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