Same here. Only stick up is that for those with NVidia GPU's (yes...) for some reason the kernel headers don't install when you install the driver, plus the secure boot signing simply does not work (Ubuntu, Fedora, they all manage OOTB). I see it is generating MOK stuff, but it does not work. Because of that, it's pretty hard to troubleshoot. Plus, Debian-provided drivers do not work/enable at all on Optimus machines, and not a single option (I tried them all, except those no longer available) on the Debian wiki. (Let's hope the Arch colab works out.)

I solved all of the above by switching to the NVidia Cuda repo (well, I did not reenable Secure Boot, so not sure if that would work now).