Fix for grub-bootloader:

Edit the file /etc/default/grub with your favourite text editor like this:

sudo nano /etc/default/grub

In the line starting with:

GRUB_CMDLINE_LINUX_DEFAULT=

add the boot option nvidia_drm.fbdev=1 (not removing others!) So your line will look similar to this with the option added:

GRUB_CMDLINE_LINUX_DEFAULT='nowatchdog nvme_load=YES nvidia_drm.modeset=1 nvidia_drm.fbdev=1 loglevel=3'

Also make sure that the parameter

nvidia_drm.modeset=1

Is present somewhere in this line. Otherwise, append it too!

If using nano as your text editor, just hit CTRL+X after editing the line and confirm with y and Enter that you would like to save the file.

On Grub you will need to generate a new config now:

sudo grub-mkconfig -o /boot/grub/grub.cfg

And you are ready to reboot to see if all work again.