[Bug 73067] New: RV770 - screen flicker with radeon.dpm=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73067

          Priority: medium
            Bug ID: 73067
          Assignee: dri-devel at lists.freedesktop.org
           Summary: RV770 - screen flicker with radeon.dpm=1
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: vasquinhos13 at sapo.pt
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 91222
  --> https://bugs.freedesktop.org/attachment.cgi?id=91222&action=edit
lspci -vv

linux-sabayon-3.12.5
https://github.com/Sabayon/kernel
I installed the lastest available kernel version on sabayon-weekly repository.
sha1sum /lib/firmware/radeon/RV770_smc.bin
43e2fc7b9faa57e78401e1b1c609f71374cc8109  /lib/firmware/radeon/RV770_smc.bin

Whem booted with radeon.dpm=1 as a kernel parameter on grub, screen flicks:
jumps down some pixels and go to normal position every ~4 seconds very fast.
Whem /sys/class/drm/card0/device/power_dpm_force_performance_level is changed
to "high" or "low" flicker stops. Whem is changed back to "auto" flicker
happens again, no mather what value is power_dpm_state.

Whem booted without radeon.dpm=1 parameter there isn't flicker.

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