[PATCH 000/165] radeon drm-next patches

[Grigori Goronzy]

On 26.06.2013 23:57, Julian Wollrath wrote:
> Hi,
>
> I just tried the DPM support out on a E-450 APU (HD6320) and it did not
> work like expected. In the terminal everything seemed ok but when I
> started a display manager, the screen showed garbage and the system
> basically locked up. The radeon and drm related parts of the syslog are
> below.
>
> If you need further information, feel free to ask.
>

I have the same problem with the same APU. Disabling power gating (set 
enable_gfx_power_gating to false in sumo_dpm.c:sumo_dpm_init) fixes it. 
So this problem may related to power gating.

The difference in power consumption seems to be small, but I'd still 
prefer it working.

By the way, the "disable_gfx_power_gating_in_uvd" quirk is not actually 
used, seems to be some leftover from debugging or such.

Best regards
Grigori