Color | 640x480 800x600 1024x768 1280x1024
--------+-------------------------------------
8bit | 769 771 773 775
15bit | 784 787 790 793
16bit | 785 788 791 794
24bit | 786 789 792 795
Debian/Ubuntu:
/boot/grub/menu.lst
RedHat/Fedora/CentOS
/boot/grub/grub.conf
Your kernel line may look like this:
kernel /boot/vmlinuz-2.6.24-21-generic root=UUID=d82ba1ab-f84f-4354-b118-543a2804a26b ro quiet splash
On most systems you can just change the last splash (and quiet) to vga=791 or something from the table like:
kernel /boot/vmlinuz-2.6.24-21-generic root=UUID=d82ba1ab-f84f-4354-b118-543a2804a26b ro vga=791
(The "quiet" gives less output on the screen while booting and "splash" loads a distribution specific graphic, sometimes animated but mostly boring)
If you get a blank screen while booting it may be because you don't have a working framebuffer.
I would search for the keywords framebuffer, linux, radeon, hp. But that's me and my computer.

1 comments:
The important parts of the kernel lines are cut off by the blogger.com screen width (div?). The end of the line that has the splash, quiet, etc. isn't visible, so that is sorta defeating the whole purpose of the posting.
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