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?
Dual-monitor mode:
~ $ cat /sys/class/drm/card0/device/power_profile low
~ $ cat /sys/kernel/debug/dri/0/radeon_pm_info default engine clock: 800000 kHz current engine clock: 799940 kHz default memory clock: 1250000 kHz current memory clock: 1250000 kHz voltage: 1060 mV
Single-monitor mode:
~ $ cat /sys/class/drm/card0/device/power_profile low
~ $ cat /sys/kernel/debug/dri/0/radeon_pm_info default engine clock: 800000 kHz current engine clock: 249990 kHz default memory clock: 1250000 kHz current memory clock: 150000 kHz voltage: 900 mV
Regards, Harald