One quirk I’ve noticed with power delivery is that if my laptop is plugged in and I start a game, it’ll pull about 60-70W through the dGPU, however, if I unplug the laptop and plug it back in, it will then pull 100W+. Does anyone know what could be causing this change of power target? I mostly notice it on Linux rather than Windows. I tested going to ↔ from performance mode, and that didn’t trigger the same effect. Performance doesn’t always go up, but temps and power draw definitely does.
Using a USB-C power meter, I can see the negotiated voltage doesn’t change.
Device:
Ryzen 7 7840HS w/ RX 7700s
240W FW PSU
Fedora 43 and Windows