I have a P20 with 2 screen , both of them power on looks oki, but i can move the mouse only on one screen and the task bar is on one screen the primary one.
I have configure on the view manager 2 desktops but windows loads only on one screen,the other screen goes dark. Using pcoip and version 3.2 as firmware.
Make sure you have it set to dual screens within View. On VDI Shut down the VM and then under video make sure you select 2 screens on the VM. Change the video ram from auto and configure 128 for RAM. Power on the VM.
If your using View 4.6 change the settings to 4 monitors and Maximum resolution.