I would like to share with you an (very good) alternative to X11vnc (Linux environment only). Her name is X2Go. He enable graphic connection like x11vnc/Remmina to a remote machine. I don't know for you, but for me, x11vnc was a calamity. I loosed the connection every time (windows freezing), some widgets doesn't appears (I could not display the camera tab on the brain menu on phd2), it was very slow, .... I didn't speak about Kstars, the screen refresh was disaster.
I had give up the idea to remote connect with graphics interface.
But since I use X2go, I can connect through wifi to my raspberry pi 4 and is very fluid and very stable. All applications display correctly, without graphics bugs.
If you have some problems with X11vnc, visit the X2go website (
C8 lightbridge, Orion Atlas mount, EOS 1000D modified and ASI120MM for guiding.