On Friday, 28 June 2024 19:40:50 CEST Mario Limonciello wrote: > > As this will normally be a headless system, I'm actually looking if I can > > turn the GPU off, *unless* there's an HDMI cable plugged in. > > So (at least for now), the GPUs only function is to have a display when I > > need it for troubleshooting. > > With nothing plugged in, modern AMD GPUs will go into runtime PM and > depending on the motherboard design either D3hot or D3cold.
I need to figure out how I can query the various things and learn what they actually mean. F.e. on the frame.work forum I found: `cat /sys/class/drm/card0/device/power/runtime_status` and that returns 'active', but I have no idea what that means. Like I said before: lots of research to do ;-) > D3cold is as close to off as you can get. Good to know :-) Cheers, Diederik
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