[I followed the online tutorial on Zorin website] i have 2 GPUs listed below when i installed Zorin the first time (the first option "Try or Install Zorin OS") the screens worked fine, but after the install finished Zorin would boot up but when the desktop was supposed to show up it give a black screen with nothing on just the main monitor and the rest weren't even receiving a signal so i turned off my pc and turned it back on and then my BOIS wouldnt boot so i had to reset the BOIS to try again, after trying it a few more times even leaving on overnight it gave me the same results.
SO the the 2nd install i used the "Try or Install Zorin OS (modern NVIDIA Drivers)" and well at OS install it showed all my screen as 1 big screen on my monitor (joined screens in display settings) and i thought its fine i will just change it later when i am done installing, so it installs and everything comes on it is still one big screen so i let Zorin update before i do anything and after that i checked the "Additional Drivers" (Image attached in link below) and the latest driver was selected and only 1 GPU (i am not sure if this is right and if not how to fix it) so i went to settings clicked on single displays and apply and "KEEP SETTINGS" if always reverts to "Joined Displays" so i googled it and they say i need to open Nvidia-Settings and enable my monitor there so i did that and Nvidia-Settings always said it cant save/apply the settings (look at screenshot linked below) so i googled this problem too and they say just open it with on terminal as SUDO and save Config file in Nvidia-Settings, so i did that, now my 2nd monitor is working now but it doesn't show up in Display settings (another link to this screenshot below) and i cant find the answer via google can anyone maybe help me out?
NVIDIA Corporation GK107 [GeForce GT 740] / NVIDIA Corporation GM107 [GeForce GTX 750 Ti]
logo bottom of screen, type Nvidia. Click on Nvidia Xserver Settings APP. Go to the config tab, setup your monitors here...
