Savior Y9000P ubuntu18+win11 The solution for ubuntu18 external monitor is not easy to use, but windows system is easy to use

1. Modify the additional driver and apply the changes

2. Restart F2 and change the mixed ubuntu system to independent graphics, save, and the problem is solved!

Tips: Modify ubuntu resolution settings etc/default/grub, GRUB_GFXMOOE=the resolution you want to set

grub is in read-only mode and requires permission to modify and save methods:

sudo chmod 777 grub