uhd630 passthrought for HW encoding.

[Tuchys]

I was trying to use uhd630 igpu for hardware encoding.
but I encounter some issues.
HDMI won't output anything. but windows can recognize that uhd630.
HW encoding only works when remote-desktop is connected.
if I disconnect from RD client. jellyfin and plex both won't be able to use uhd630 for en/decoding.

that is confused me. I also tried to use a Dummy HDMI plug.also not working.

i use this line to passthrough.
hostpci0: 02:00.0,pcie=1,x-vga=1,rombar=0

 

[zaptrem]

I'm having the same issue. I'm sure vfio-pci has control of the iGPU (it's never bound by any of the Linux framebuffers and the screen freezes after GRUB). I must use UEFI, not SeaBios. Windows can see the GPU, but reports error 43 and gives no video output. Any help would be much appreciated.