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znta

Member

Registered: 2022-12-19

Posts: 1

Unable to properly adjust powercap for Radeon RX7900XTX

Trying to change the power cap of my graphics card (both via writing to /sys/class/drm/card0/device/hwmon/hwmon2/power1_cap and using rocm-smi) fails.

cat /sys/class/drm/card0/device/driver/module/parameters/ppfeaturemask 
0xffffffff 

echo "400000000" > /sys/class/drm/card0/device/hwmon/hwmon2/power1_cap
bash: echo: write error: Operation not supported
journalctl -xe
Dec 20 14:40:03 spastamd kernel: amdgpu 0000:0b:00.0: amdgpu: Setting new power limit is not supported!

Update: Using Kernel 6.2.0-rc2-2-drm-next-git-00684-g0b45ac1170ea changing the powerlimit is possible, but not above the default limit of the card (350000000) instead of the reported power_cap_max(711000000) that the 3x connector AIB card offers.

Last edited by znta (2023-01-21 12:31:43)