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mreynolds
January 15th, 2009, 07:12 AM
Hello all. I was searching for a list of the vga= values available to use to change grub's resolution. I found the following thread here at the ubuntu forums;

http://ubuntuforums.org/showthread.php?t=127134

Sadly, the consensus in that thread is that it's impossible to change the resolution of the grub menu. :confused: I wanted to provide the following table of available resolutions, and the value to enter to get them for future searchers. I tried to post to the original thread, but it's to old and has been closed or something. Anyway, here is a table of resolutions that grub supports.


+-------+-------+--------+---------+---------+
|640x480|800x600|1024x768|1280x1024|1600x1200|
+---------------+-------+-------+--------+---------+---------+
|256 (8 bit) | 769 | 771 | 773 | 775 | 796 |
|32,768 (15 bit)| 784 | 787 | 790 | 793 | 797 |
|65,536 (16 bit)| 785 | 788 | 791 | 794 | 798 |
|16.8M (24 bit)| 786 | 789 | 792 | 795 | 799 |
+---------------+-------+-------+--------+---------+---------+


Add one of the 3 digit values from the table above to the kernel line in an entry;

EX: kernel /vmlinuz ro root=/dev/sda2 vga=799

Your grub menu will now be 1600x1200, using 24bit color.

I was hoping the code tags would display the table in a nice monospace font so it looks nice in the post, but they don't. If you copy the table as is and paste it into a text file with a monospace font, it will line up properly and look pretty. I usually paste the table as a comment right into my grub.conf for future reference.

cheers :guitar:

The link provided in the post mentioned lists the same table as above ;) Mine is slightly more ascii-prettified though

jpkotta
January 15th, 2009, 09:09 AM
I've never heard of changing the resolution of Grub. It's probably impossible, but I won't say it is for sure. Those vga= parameters are for the kernel, the kernel is not running when Grub is (Grub's raison d'Ítre is to load the kernel).

You can make grub look nicer with a background. See https://help.ubuntu.com/community/GrubHowto

BTW, code blocks show up as monospaced for me -- your table looks fine. If it doesn't look right for you, you should look at the font settings for your browser.