I currently use Ubuntu on my macbook pro with grub. My macbook has a retina display with 2560x1600 resolution. The grub startup screen font is so tiny that it is barely readable.How can I make grub appear in an eye-friendly way with this setup?Just passing on a gfx mode like GRUB_GFXMODE=640x480 does not have any effect?Thanks for a solution.
Grub with retina displays (high resolution)
grub2
Since there seems no way to use a different resolution with this hardware, the solution is to increase the font size as described here: Can GRUB font size be customised?Which works perfectly.