[Solved] ubuntu Boot Error: /dev/nume0n1p2:clean

This is an error that cannot be reported in the graphical interface. Sometimes this problem occurs when the driver or program is updated.

Solution:
Ctrl + Alt + F2 enter the command line, enter the user name and password, and then enter the update library: sudo apt update

update kernel:
sudo apt upgrade

check for updates:
sudo apt install - f

delete old kernel:
sudo apt autoremove

Restart: reboot
Congratulations on your success!

ProgrammerAH