I have a problem with Nvidia GPU so Fedora not to boot (after 'F' sign I got a gray screen), I tried to install Ubuntu, and Ubuntu not to boot too, but I found here that with pressing 'e' I can change in Grub2 load mode on "nomodeset", I changed it and it works after Ubuntu logo I got GUI, and I changed additional drivers to Nvidia, not Xorg! What 'nomodeset' mode for Fedora is?