I tested with both video=vesafb and video=efifb on a
self-compiled Linux-2.6.26.2 with a config based on
Ubuntu's, both with my own compile of GRUB SVN head and with
Bean's grub2-efi compile that had mysteriously worked better
for me in some ways.
linux /... video=...fb agp=off root=/dev/sda4 gpt
initrd /...
boot
+ loading the 50MB initrd worked fine (I have no idea why my
self-compiled Linux .ko modules are 5x the size of Ubuntu's :-)
+ it booted fine, except the graphics and sound (I could
tell because of listening to disk noises and pressing the
power button on the login screen did a clean shutdown as
normal for Ubuntu; maybe I should've checked ssh-ing)
- Linux failed at graphics both in console and X: Linux made
a funny pattern on the screen that didn't change (though it
was different the two times I tried booting through EFI).
- No sound when there probably should've been
maybe I'm still doing something wrong, I dunno :-) ... BIOS
boot is still working great. Although, I tried putting
grub2-bios on a USB Flash drive's MBR[is that the right
terminology? it is partitioned, not superfloppy], and when I
tried booting from it on my MacBook, rEFIt told me that
booting it failed and that it's probably because Apple's
support for USB-boot is not very good. So I don't think I
got even as far as the point of discovering whether grub
worked (it had mentioned an odd device.map(IIRC) to me when
installing).
-Isaac
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