My original posts are here and I had to open a new one due to new users cannot post more than 3 replies in a thread.
So here’s my problem: I tried to install the Nvidia driver on my Ubuntu 18.04, but after reboot, I lost the GUI and cannot boot into the system. I tried following several solutions from posts, but right now I can not even enter the terminal via Ctrl+Alt+F1/F6/F7. I have tried Alt+PrtScreen+r and Alt+F4, but it’s not working either. I did try the recovery mode, but the only output is:
Loading ubuntu 5.4.70-generic... Loading initial ramdisk...
and it’s not responding to any keyboard input, including Ctrl+Alt+F1/F6/F7 and Alt+PrtScreen+r
Thanks for your guys’ help!