How to Safely Change Grub2 Screen Resolution?

grub2 isn't really fit in the best screen resolution that my laptop can support (1280 x 800).

How can I do this without using a third party application ?

6 Answers

To do this safely requires two steps.

Step 1: find the preferred mode

Reboot and press and hold Shift to display your grub. Press C to enter console mode. Then type (for Ubuntu versions before 18.04):

$ vbeinfo

For Ubuntu 18.04 and later:

$ videoinfo

This will display various stuff how grub recognizes your display. At the bottom is "preferred mode" - in your case it should say 1280x800. Note down the value.

Note: sometimes, some buggy video cards incorrectly give Grub the wrong preferred resolution - if the preferred mode is much higher than you were expecting, then select the nearest mode in the list displayed that you were expecting.

Press Esc to return to grub and press Enter to boot.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.