I went out and bought a new 12th generation Intel box to do VirtualBox testing on and moved the nvme from my gen 10 5080 to the gen 12 5000.

It has the UHD 770 graphics processor but does not display video on the Monitor - the BIOS does and the grub menu displays fine.

I do have ssh and vnc into the box. I am able to use it but not on the unit itself.

Larry Finger helped me gen 6.4.0 kernel on the box to see if newer i915 drivers fix the problem - it did not.

It is running Leap 15.5 and has 8 VirtuaBox guests running - I did have to add ibt=off to get that to work.

Per the internet and Linux with gen 12 - it was reported that you needed this parameter on the kernel line - It made no difference.

GRUB_CMDLINE_LINUX_DEFAULT="noresume splash=verbose showopts i915.force_probe=4680 ibt=off"

inxi shows

Graphics:
  Device-1: Intel AlderLake-S GT1 vendor: Dell driver: i915 v: kernel ports:
    active: none empty: DP-1, DP-2, DP-3, DP-4, HDMI-A-1, HDMI-A-2, HDMI-A-3,
    HDMI-A-4 bus-ID: 00:02.0 chip-ID: 8086:4680 class-ID: 0300
  Display: x11 server: X.org v: 1.21.1.4 compositor: marco v: 1.26.0 driver:
    X: loaded: modesetting unloaded: fbdev,vesa alternate: intel dri: iris
    gpu: i915 tty: 80x24
  API: OpenGL Message: GL data unavailable in console for root.

xrandr shows

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DP-1 disconnected primary (normal left inverted right x axis y axis)
   1920x1080     59.96  
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
   1920x1080     59.96  
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
HDMI-4 disconnected (normal left inverted right x axis y axis)

because I set the video mode to 1920x1080 to get the correct display in vnc with this script

cat ~llrainey/bin/video.sh
/usr/bin/xrandr --newmode "1920x1080"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
/usr/bin/xrandr --addmode DP-1 1920x1080
/usr/bin/xrandr --addmode DP-2 1920x1080
/usr/bin/xrandr --fb 1920x1080 

Any help would be appreciated. It appears that all flavors on Linux have this issue but these folks said they got it to work

https://www.phoronix.com/review/uhd-graphics-770

Thanks -

Larry Rainey