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URL:
https://askubuntu.com/q/1096354
Title:
How can I change the resolution of the GRUB menu?
ID:
/2018/11/27/How-can-I-change-the-resolution-of-the-GRUB-menu_
Created:
November 27, 2018
Edited: June 12, 2020
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You can use 1920x1080 screen size but you will want to generate a larger font. Although the following GIF uses grub themes for additional graphics, generating larger 24 or 36 point fonts is the same for regular grub.
Make Grub fonts
Even if you are just using regular grub, if you want a different font you must use grub-mkfont program first. The same holds true for Grub Customizer used by OP and Grub Themes used in first section of this answer.
Here are the fonts I have made for grub to use:
$ ll /usr/share/grub/themes/Tuxkiller2/*.pf2
-rwxrwx--- 1 root root 176923 Jun 9 16:41 /usr/share/grub/themes/Tuxkiller2/dejavu_14.pf2*
-rwxrwx--- 1 root root 20041 Jun 9 16:41 /usr/share/grub/themes/Tuxkiller2/droidlogo_bold_17.pf2*
-rwxrwx--- 1 root root 23339 Jun 9 16:41 /usr/share/grub/themes/Tuxkiller2/droidlogo_bold_20.pf2*
-rwxrwx--- 1 root root 31498 Jun 9 16:41 /usr/share/grub/themes/Tuxkiller2/droidlogo_bold_26.pf2*
-rwxrwx--- 1 root root 15244 Jun 9 16:41 /usr/share/grub/themes/Tuxkiller2/droidlogo_regular_12.pf2*
-rwxrwx--- 1 root root 19148 Jun 9 16:41 /usr/share/grub/themes/Tuxkiller2/droidlogo_regular_17.pf2*
-rwxrwx--- 1 root root 113623 Jul 11 17:05 /usr/share/grub/themes/Tuxkiller2/ubuntu_bold_italic_36.pf2*
-rwxrwx--- 1 root root 45391 Jul 11 17:08 /usr/share/grub/themes/Tuxkiller2/ubuntu_light_20.pf2*
-rwxrwx--- 1 root root 41020 Jul 11 17:16 /usr/share/grub/themes/Tuxkiller2/ubuntu_regular_18.pf2*
-rwxrwx--- 1 root root 46423 Jul 11 17:16 /usr/share/grub/themes/Tuxkiller2/ubuntu_regular_20.pf2*
-rwxrwx--- 1 root root 68602 Jul 11 16:59 /usr/share/grub/themes/Tuxkiller2/ubuntu_regular_28.pf2*
To create a font use the grub-mkfont program like this guide outlines: Increase Font in GRUB for High DPI Screens:
sudo grub-mkfont --output=/boot/grub/fonts/DejaVuSansMono24.pf2 \
--size=24 /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf
Then in your /etc/default/grub configuration file tell it to use the new .pf2 font file:
# More readable font on high dpi screen, generated with
# sudo grub-mkfont --output=/boot/grub/fonts/DejaVuSansMono24.pf2 \
# --size=24 /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf
GRUB_FONT=/boot/grub/fonts/DejaVuSansMono24.pf2
Finally run:
sudo update-grub