I have a Novacustom V56 without a Nvidia GPU, so only iGPU.
I ran the following commands as described in the docs to create sys-gui-gpu:
sudo qubesctl top.enable qvm.sys-gui-gpu
sudo qubesctl top.enable qvm.sys-gui-gpu pillar=True
sudo qubesctl --all state.highstate
sudo qubesctl top.disable qvm.sys-gui-gpu
sudo qubesctl state.sls qvm.sys-gui-gpu-attach-gpu
After all states ran successfully, I checked if default_guivm was set to sys-gui-gpu and it wasn’t. I thought that should have been done automatically, however I manually changed it to sys-gui-gpu then.
I restarted my laptop and tried to boot into sys-gui(-gpu) by selecting it in the login. The only thing that happened was that there was a short black screen, then i came back to the login screen. I tried it multiple times.
Then I logged in “normally” again without sys-gui and I realized that sys-gui-gpu didn’t even get started, so I activated autostart on boot.
Then I rebooted again and after Luks i just gut a black screen, i couldn’t even access a terminal.
I had to change the kernel params in order to be able to boot again (this was a bit of a mess because Heads doesn’t make this too easy )
Any ideas how i could debug this?