Hello @samelocurrente 
It is pretty common issue with nvidia and discussed numerous times here on the forum. You need to switch to the nvidia gpu if the second screen is connected to the nvidia gpu. That is a limitation of the nvidia driver. Open source Drivers (i915, radeon, amdgpu, nouveau) have no problems here.
Use the search function to find more.
PS: Don’t post pictures of text. Is it so difficult to copy&paste it and use code blocks? [HowTo] Post command output and file content as formatted text