On Sat, Jul 12, 2008 at 11:26 PM, Robert Millan <[EMAIL PROTECTED]> wrote: > On Sat, Jul 12, 2008 at 11:16:31PM +0800, Bean wrote: >> On Sat, Jul 12, 2008 at 10:41 PM, Robert Millan <[EMAIL PROTECTED]> wrote: >> > On Wed, Jul 09, 2008 at 12:31:53AM +0800, Bean wrote: >> >> > -- I tried passing video=intelfb to linux; it worked under grub2-pc but >> >> > didn't improve anything under efi. >> >> >> >> intelfb doesn't work. The only way to see console in efi is to use >> >> video=vesafb or video=efifb. >> > >> > How come? I thought intelfb used the bare hardware. >> >> The video register in efi mode is not setup in the same way as bios. >> There are two sets of register. In EFI, set A is completely zero, >> while set B have non-zero value. But in bios mode, both set have >> non-zero value. I guess this is because bios have text and graphic >> mode, while efi only have graphic mode. (text mode in efi is emulated) > > But isn't intelfb supposed to access the hardware without any support > from bios/vesa or efi?
Intelfb uses the environment setup before, it doesn't try to reinitialize video registers. -- Bean _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
