[Bug 70053] New: hard machine hang when switching to battery power with DPM enabled on Trinity APU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70053

          Priority: medium
            Bug ID: 70053
          Assignee: dri-devel at lists.freedesktop.org
           Summary: hard machine hang when switching to battery power with
                    DPM enabled on Trinity APU
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: dev at lynxeye.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: DRI CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 87002
  --> https://bugs.freedesktop.org/attachment.cgi?id=87002&action=edit
dmesg before hang

When booting with DPM enabled the machine hard hangs when switching from AC to
battery power or when booting without AC connected as soon as GDM starts.

I can't reach it via ssh after the hang, so only dmesg before hang provided.
Kernel is 3.12-rc2 with agd5f/linux/drm-fixes-3.12 merged in.

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