Re: Grub2 video issue after upgrade
See this post
[ DBelton Online
Join Date: Aug 2009
Re: Missing Grub Splash in F17
edit (as root user) /boot/grub2/grub.cfg and scroll down until you find this section:
if loadfont $font ; then
Change the set gfxmode=auto line to set gfxmode=1280x1024
What happens is that it tries to set a video mode that the video card doesn't support. Anything higher than 1280x1024 is supported only if the hardware manufacturer decided to include it. The VESA standard only supports video modes up to 1280x1024.
If that fixes your issue, then you need to change /etc/default/grub so that it will set it properly if you ever run grub2-mkconfig ]
under general support in this forum, hope that it helps, it did for me.