[r600g] ATI Radeon HD6950, dual monitor and power profile

[Adam Jackson]

On 12/20/11 1:38 PM, Harald Judt wrote:
> Hi,
>
> When using more than one monitor, the card uses higher clocks than in
> single-monitor mode and low-power profile. As a subjectively negative
> side-effect, the fan on the card starts making more noise. Other cards I
> used before had no problem with staying quiet even when more monitors
> were attached.
>
> As soon as I switch back to single-monitor mode, clocks go down and the
> card becomes silent again.
>
> Is there a way to manually force lower clock speeds, and therefore reach
> an acceptable noise level? Maybe make it use the same power profile
> settings in dual-monitor as in single-monitor?

It really depends on what kind of power profiles the device exposes. 
Boot with drm.debug=0x2 and they'll be in dmesg.

- ajax