First of all, I completely missed that you've mentioned me here.   Can you please test this: Remove the iGPU from the bus with: echo "1" > /sys/devices/pci0000\:00/0000\:00\:02.0/remove (in this case I'm assuming that the iGPU is on the PCI bus on: 00:02.0) After that unload the module with: rmmod i915 Load the module again with enable_dc=0 with: modprobe i915 enable_dc=0 Then rescan the PCIe bus to again get your iGPU into the system with: echo "1" &g