Install Ubuntu 20.04 on Asus G15

Solution 1:

So these are the steps I follow to install Ubuntu 20.04 on Asus G15. The culprit is the graphics driver.

1. install without checking "Install third-party software".
2. boot in recovery mode
3. enable Networking
4. sudo add-apt-repository ppa:graphics-drivers/ppa
5. sudo apt install nvidia-prime
6. sudo apt update && sudo apt upgrade
7. create /etc/modprobe.d/blacklist-nvidia-nouveau.conf

blacklist nouveau
options nouveau modeset=0

8. edit /etc/default/grub and append nomodeset after quite splash
9. sudo update-grub
10. sudo reboot now

Notes:

1. I'm not sure if any commands above can be ignored.
2. Since you are logging in as a root shell, sudo is not required (because you are already a root user).
3. There are possibilities to install proprietary drivers

sudo ubuntu-drivers install

or

sudo apt install nvidia-driver-460

but I did not take risks.

4. I have seen stuff like this or this, which may be helpful, but probably not mandatory. It is still good to know though.