Thank you for your answer. I solved the problem with nvidia prime not really disabling the nvidia card (still drawing power) when switching to Intel with:
sh -c 'echo auto > /sys/bus/pci/devices/0000\:01\:00.0/power/control'
Almost halved the power draw on my Dell XPS 15.
Thank you for your answer. I solved the problem with nvidia prime not really disabling the nvidia card (still drawing power) when switching to Intel with:
sh -c 'echo auto > /sys/bus/ pci/devices/ 0000\:01\ :00.0/power/ control'
Almost halved the power draw on my Dell XPS 15.