Arch Linux

predacon

Member

Registered: 2013-10-13

Posts: 33

Hybrid graphics AMD+AMD issue with battery drain caused by dGPU

Hi

I have a MSI Alpha15 laptop with ryzen 4800H + 5600M 6GB on it, and since bought it about 2 years ago having a problem with battery life, which is a lot shorter than spected.

What I discovered until now is when disable the dedicated gpu with

 echo 1 | tee /sys/bus/pci/devices/0000\:03\:00.0/remove 

battery life grows dramatically from 2 hours before command to 6 hours after command.

Reading on archwiki's https://wiki.archlinux.org/title/hybrid_graphics , and https://wiki.archlinux.org/title/AMDGPU does not help too much in my case.

There is not too much info, guides or tools to play with amd gpus power states D3cold, D0 etc...

If you have same problem or know another way to power off completely or at least avoid power drain of the dedicated GPU please, waste a little time with me

Oh, forgot to mention, im running arch up-to-date, KDE plasma and wayland.

Sorry for my english ^^!