Because the two graphics cards, amd and nvidia, install the driver according to the official parrot documentation, the result can be imagined, the installation failed ~~~
In my heart, I went to a foreign forum and found many friends who asked for help, so with my essay, how to restore your parrot
Press Alt + ctrl + F1 on the black screen to enter the terminal, enter the root password
Execute, remove nvidia
apt-get --purge remove nvidia*
Because when I was in a hurry to repair, I deleted other things. You can execute the following command without affecting it
Update system
parrot-upgrade
Repair uninstalled
apt --fix-broken install
Reinstall xserver
apt-get install --reinstall xserver-xorg apt-get install --reinstall xserver-xorg-video-nouveau
Restart the system
reboot
Alt + ctrl + F7 will be back