Session resolution limited to 1024 × 768 — how to change?

[DominikHoffmann]

When I make a connection via

Code: Select all

vnc://user@hostaddress

from my Mac (macOS 15.5) to a PC on the local network running the UltraVNC 1.6.1.0 server on Windows 11 24H2 (26100.4061) the session window is a fixed 1024 × 768 resolution. What can I do server-side to change that and make better use of my 16-in MacBook Pro screen?

[DominikHoffmann]

So, I found out that once I am logged in, I can go to Settings → System → Display → Display Resolution and change the resolution. It’s just that I would like to have a larger screen right off the bat.

[DominikHoffmann]

Once logged in, I can change the resolution through Settings → System → Display → Display resolution. Once there is more screen real estate to transmit through the VNC connection, it gets really slow.

Is this, because with my Mac being a client the server falls back on the original VNC protocol, which does not support on-the-fly image compression?

[GwynethLlewelyn]

... just to clarify, what VNC viewer are you using on the Mac?

1. Screen Sharing.app (native macOS VNC viewer)
2. UltraVNC running as a Java application
3. Something else

I'm just curious, I've been trying to connect with Screen Sharing and TigerVNC, without any success whatsoever...

[Ludovic]

@DominikHoffmann: In UltraVNC Viewer -> Options -> Display -> you can change the UltraVNC Server resolution.
But you do not use the UltraVNC Viewer on a macOS...
We always need help to have UltraVNC on other OS and on ARM too...