Comment # 5 on bug 941931 from Michael Chang

(In reply to Jan Matejek from comment #4)

>From your log. somehow the active video adapter was VGA Video driver. There
could be something wrong here, as it can't support for resolutions other than
640x480 or 640x350. Also it should use vbe video driver if video bios
externsion is available, which is quite common nowadays.  

What do `hwinfo --framebuffer` say in your system ? Also can you test by
modifying /boot/grub2/grub.cfg from 

function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

to 

function load_video {
    insmod vbe
}

* remember to backup your grub.cfg for the testing, ideally it should fallback
to text mode for no matched video adapter found, but I can assure that.

Thanks.