Hello,
I tried this solution, and the NVIDIA x server program worked again (it was also opening blank). Then I changed the options in the nvdia from performance mode to "on demand mode" and restarted zorin. But now when the system starts, show zorin symbol and then it stays in a black screen. Any suggestions how to fix it?
In /etc/default/grub, do you have nomodeset in your grub parameters after "quiet splash"? If you do, remove it and make it just "quiet splash".
If not, please add the xswat repo:
sudo add-apt-repository ppa:ubuntu-x-swat/updates
And then upgrade your graphics drivers:
sudo apt update && sudo apt upgrade
If the above does not resolve the issue...
Then please remove the file:
sudo rm /etc/X11/xorg.conf
Remove Nvidia drivers, then reinstall:
sudo apt remove --purge '^nvidia-.*'
sudo ubuntu-drivers install && sudo apt install --reinstall nvidia-prime
Change to Nvidia:
sudo prime-select nvidia
Check your blacklist and remove any blacklist files:
sudo rm /lib/modprobe.d/blacklist-nvidia.conf /etc/modprobe.d/blacklist-nvidia.conf
sudo update-initramfs -u
Reboot and test
1 Like
Hi,
Sorry, just could find time to solve this now in the weekend. I had to purge and then reinstall NVIDIA driver (second suggestion) and it is all working fine now.
Thanks for the help! 
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