I bought a mainboard off of AliExpress (CW-N5105-NAS, Topton NAS Motherboard N5105) and had trouble getting my internal GPU going. It has an 11th Gen Intel Jasper Lake with these specifications. This post in the libreelec forum provided part of the solution that finally helped me, because
ls -la /dev/dri
did nothing for me before.
I had to edit /syslinux/syslinux.cfg on the USB stick and make the first boot entry look like this (notice the 4th line)
label Unraid OS
menu default
kernel /bzimage
append i915.enable_fbc=1 i915.enable_guc=2
append initrd=/bzroot
And I also had to create this file with
echo "options i915 enable_fbc=1 enable_guc=2" > /etc/modprobe.d/i915.conf
Now everything works for me.
Hope this prevents a couple of headaches. Cheers