[Bug 83505] New: AMD A4-5300 APU : only radeon.dpm=1 prevents random reboots with 3.16.1 kernel.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83505

          Priority: medium
            Bug ID: 83505
          Assignee: dri-devel at lists.freedesktop.org
           Summary: AMD A4-5300 APU : only radeon.dpm=1 prevents random
                    reboots with 3.16.1 kernel.
          Severity: minor
    Classification: Unclassified
                OS: Linux (All)
          Reporter: rpnpif at free.fr
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 105760
  --> https://bugs.freedesktop.org/attachment.cgi?id=105760&action=edit
dmesg with radeon.dpm=1

I have read that for this AMD A4-5300 APU (Aruba), radeon.dpm=1 on the grub
command line of the kernel booting is useless because this option is already
per default in the kernel.

But if I don't use this option, Debian 7.6 reboots randomly after some minutes,
hours or days of work when I use Iceweasel/Firefox and some flash animation,
Libreoffice or other heavy application.

With this option, no reboots. All work fine after several days.

This issue seems about the same as
https://bugs.freedesktop.org/show_bug.cgi?id=82201#c26 but I am not sure.

I report this issue because dpm=1 should be useless.

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