Hello,
The xorg-x11-6.8.1-10 and xorg-x11-6.8.1-11 builds have a crasher bug
that prevents the X server from starting. The problem is not related to
neither the kernel or rhgb, and it doesn't depend on what type of
graphics hardware you have. I'm building xorg-x11-6.8.1-12 which will
fix the problem, in the meantime, it's probably best to stick with
xorg-x11-6.8.1-8.
The issue is already in bugzilla:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=136478
To disable rhgb and boot into runlevel 3 (textmode), press 'e' in grub
to edit the boot script, select the kernel line and press 'e' again.
Then delete the 'rhgb' part and append '3' at the end of the line.
Thanks,
Kristian