Set VNC resolution? - Raspberry Pi Forums
forums.raspberrypi.com › viewtopicDec 17, 2017 · Not quite: disable vnc in the preferences so that it is not coupled to the ‘real’ screen. Then use ‘vncserver ‘ to make a virtual screen. You can specify the resolution of that screen with (IIRC) -randr 1280x1024 (for example). There are about forty-gazillion options to read about in the RealVNC documentation.