Am 2025-06-25 20:53, schrieb Michael Jumper:
On June 25, 2025 4:06:07 AM PDT, "Matyas, Tibor"
<temp...@st-ts.org.INVALID> wrote:
Dear all,
recently updated from 1.5.5 to 1.6.0 - Issue observed:
after upgrading to version 1.6.0, VNC sessions with remote UltraVNC
versions newer than 1.3.x are no longer functioning correctly.
Tested and confirmed:
UltraVNC 1.3.x - works
UltraVNC 1.4.3.6 (and newer) - does not work
Guacamole successfully establishes a VNC connection to the remote
host, and the initial screen is displayed in the browser (tested with
FF, EDGE).
While mouse and keyboard inputs are processed correctly via Guacamole,
the screen remains frozen and does not update.
This was verified using both a direct monitor view and the Guacamole
session.
Reverting to version 1.5.5 resolves the issue - everything works as
expected with all of our widely installed 1.3x - 1.6x UltraVNC
versions.
Any help is appreciated.
What is logged by guacd when things are working vs. not?
If you disable display resize support in Guacamole's VNC connection
parameters, do you still see the same failure?
Does UltraVNC log anything differently in the working vs. non-working
cases?
- Mike
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Dear Mike,
disabling display resize support in Guacamole's VNC connection
parameters solved the problem - perfect!
Apparently, auto-resize is still not working properly with (also latest)
UltraVNC.
Thank you and BR
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