I was planning to change the Plymouth screen resolution(Blame Fglrx!).
When I went to GRUB-Customizer(info for that), the screen resolution menu shows (as usual) 800x600, 1024x678, 600x400, and a bunch of other things.
But after I scrolled down, I saw weird screen resolutions like 1024x768 x8, 1280x1024 x16, 800x600 x24, etc. Computer screens shape like a rectangle, not a cube, so what does those extra numbers mean? Or is there a secret dimension in every computer screen that I ignored?