In VirtualBox, it's possible to specify a custom video mode that could be used by GRUB and provide screen size hint for the login screen. I used this to make GRUB, TTYs, login screen, and graphical session all have the same resolution.
How to set custom video mode and screen size hint in virt-manager?
Host and guest are both Xubuntu 22.04. The guest is UEFI without secure boot, and has VirtIO video with Spice+egl-headless displays.
Not seeking dynamic resizing of the guest screen with the viewing window, only looking to specify a different fixed resolution that the guest (mostly) automatically uses by default.
How to set custom video mode and screen size hint in virt-manager?
Host and guest are both Xubuntu 22.04. The guest is UEFI without secure boot, and has VirtIO video with Spice+egl-headless displays.
Not seeking dynamic resizing of the guest screen with the viewing window, only looking to specify a different fixed resolution that the guest (mostly) automatically uses by default.