Welcome to the Forum!
Could You provide more Details? Because of the Thread Title I guess, You have 2 Monitors. How they are connected? Are both the same? Are both plugged in into the Graphics Card or is one in the Mainboard?
I have tried 7 monitor combinations. 1 hdmi main. 1 HDMI gpu. Both work singularily. I have Googled for days and still can't find it. Even using zorin search came back blank.
Okay, could You say how Your current Setup is? Are these Monitors are 2 Times the same or are they different Monitors with different Resulutions and Refresh Rate? And how is each Monitor connected?
1 kvm monitor hdmi 60htz
1 27" HD security monitor HDMI. Gpu 60 htz
System running as nvr
Access kvm for maintenance
Have to unplug monitor to have kvm show after reboot
Could You try it with disabled Fractional Scaling please?
Same results
And the Monitors are plugged in as HDMI>HDMI or DP>DP or do You use any Adapters or Dock's?
[quote="Ponce-De-Leon, post:8, topic:61181"]
HDMI>HDMI
Okay, let's try the Following: Go to the Login Screen. Click there on Your Profile so that the Password Field appears. When it is appeared, You should see a Gear Icon in the bottom right Corner. Click on it and choose the Option ''Zorin Desktop on Xorg'' and then log in and check if it works.
same result
I give up and get a splitter and be done with it
FYI
CAME ACROSS THIS
Official Linux drivers are not provided by MSI for the MAG B650 TOMAHAWK WIFI, as the manufacturer does not offer dedicated support for Linux. The motherboard's wireless and Bluetooth components rely on kernel-native drivers included in standard Linux distributions rather than proprietary binaries.
If this my main system I'd be down to troubleshoot but the splitter works 
