How to change screen resolution before reaching the log in screen in Debian

Hey guys, after some trial and error, I think I’ve figured out that the native screen resolution of my monitor (2560x1600) isn’t supported by Debian with my hardware configuration.

The GNU GRUB boot loader appears without any issues, but once it auto boots into Debian GNU/Linux, my monitor just shows a bunch of lines.

Is there a way that I can use GNU GRUB to tell Debian which screen resolution to use before it tries to go to the login screen? Preferably 1920x1080 or lower.

Thank you!

Add a kernel boot option to grub (type it manually to test):


1 Like