I have a notebook with 2 GPUs, and I noticed that they seem to be "linked" in the Device Manager. If I update the driver for one, it changes the other, and if I disable either one of them, it disables graphics acceleration (even if I disable the one that is powered off.)
Also, I used a WMI script to display the status of the GPUs, and the output is opposite what I expect: it says the high performance one is being used, and the low performance one is offline. I think this is incorrect because I can power them on and off manually in Linux, and whenever the high performance one is on it generates a lot of heat and causes the fan to speed up.
I'm interested in these two problems because I think they may be causing the GPU switching problem I've been having for months.