I am using the free version of NoMachine on an older Dell Optiplex 9010 . I have the latest version of Linux Mint installed.(19). The Dell Optiplex came with onboard graphics and NoMachine worked great when connecting from a Windows 10 machine. Recently I upgraded the graphics on my Optiplex to an Nvidia Gt 1030. Now NoMachine is broken. The only resolution I can get is 640×480 and part of the desktop is cut off. The same problem occurs with (other remote access solution). I used the drivers for the Nvidia card as suggested by Update manager. I did not try disabling onboard video in the Bios as the new Nvidia card worked right away.