Can you please try:
sudo ubuntu-drivers autoinstall
sudo systemctl disable nvidia-fallback.service
sudo nano /etc/default/grub
Arrow key down to this line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
and change it to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nouveau.blacklist=1"
once done, run
sudo update-grub
Reboot and test.
3080?!?! 
!!!
Me with my measly Intel HD 5500. 
I thought you were gonna says WOUZERS with this GIF
And yeah, I am sorry to say, I think even my Intel integrated UHD beats your Intel HD GPU too.
Awww, no cry Yuk, you are still amazing to me, no matter what kind of computer you have. You could literally be running on a potato, and I'd still like ya.
This is what it fetched
PotatoPC remind me of this:
I do not believe that the Nvidia-390 is supported along with the 5.11.0 kerneal used by Zorin.
You should be able to install the Nvidia-460.59 driver to enable that support:
sudo apt install nvidia-460
I get this error.
Try adding the repository, first:
sudo add-apt-repository ppa:graphics-drivers/ppa
Then see if you can get the dkms package:
sudo apt install nvidia-dkms-460
Still having some issues
Can you try:
sudo apt --fix-broken install
sudo apt install linux-modules-extra-5.8.0-41-generic
sudo apt install nvidia-dkms-460
Still same issue
sudo add-apt-repository --remove ppa:graphics-drivers/ppa
sudo add-apt-repository ppa:ubuntu-x-swat/updates
sudo apt --fix-broken install && sudo apt update && sudo apt full-upgrade
When complete, check and tell me which Nvidia Graphics driver it shows you using.
Here you go
Ok, you are on the 470 driver.
I need to head out, will be away from computer for a few hours.
sure. Take your time.
I have the same problem. any solution?
