Are you using ALR or any non-default server settings?  I don't understand your comment about adaptive resolutions.  Remote Desktop should always adapt the resolution, and what I observe is that, after connecting to Windows, the remote desktop is the same size as the TurboVNC session.  This is true regardless of whether I connect to a Windows VM or a physical Windows machine.

Generally speaking, a "Rect too big" error is caused by a protocol mismatch.  The error could happen if the server sends an RFB message that the viewer cannot handle, which is why the server and viewer negotiate their capabilities beforehand.  The error could also happen due to data corruption on the network, which could be the result of a faulty firewall or other intermediary.  In order to diagnose the issue, I would first need to reliably reproduce it.  Then I would insert a lot of logging statements into the server to determine exactly what it is trying to send whenever the error occurs.

Since I can't repro the issue, it would be a useful datapoint to determine whether it occurs with a different VNC viewer, such as the TigerVNC Viewer.

On 7/29/22 2:13 AM, Felix Natter wrote:
hallo DRC,

I am using /opt/TurboVNC/bin/vncviewer -Toolbar=0 -Shared=0 -MenuKey=F2 -Encoding=Tight -JPEG=1 -Quality=70 -CompressLevel=7 -Subsampling=4x X:1 but I can reproduce it without all those settings. Another user using the same TurboVNC version (3.0) does not have any problems.
Are there any persistent settings (I did not change anything in ~/.vnc)?
Also, it works with Windows VMs (which can supposedly adapt their resolution). Setting TVNC to fullscreen before running xfreerdp
helped once, but now it crashes in this case, too.

Many Thanks and Best Regards,
Felix Natter

DRC schrieb am Freitag, 29. Juli 2022 um 01:09:25 UTC+2:

    Unfortunately I can't reproduce the issue.  Are you using any
    non-default settings?



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