Remote display frozen at connection

[truc113]

Hi all,

I’ve been using NoMachine to connect to my work computer which is accessible only through a vpn, my work computer runs xubuntu 24.04 and my home computer runs xubuntu 22.04, both have NoMachine 9.1.24, display manager (lightdm) is disabled so I can connect to remote desktop with the resolution I want (big screen at home, tiny screen at work), ie. I’m using option 1 of https://kb.nomachine.com/AR03P00973.

Recently the vpn was updated to allow only RDP connections (most of coworkers are on Windows), ie. port 3389 only, not even SSH.

I thought i had prepared correctly for that by making NoMachine server on work’s computer use port 3389 with NX protocol, which was perfectly fine until the vpn update. Since then I can connect to remote display apparently successfully but the display is frozen, I can see the mouse cursor changing depending on whether it’s on text, clickable stuff etc, I can type and and run commands but the display does not change at all (I don’t see what I type or the result of any click), I have a clock with second-precision in my taskbar and it shows time of connection and never changes (like the rest of the display).

If I disconnect/reconnect I still have a frozen display but at least it shows the “updated” version of my remote desktop with the result of all “blind” actions I performed in previous connection ie. if I had closed a window or typed a command in previous connection I can now see the result of it.

Any idea ?

Regards,
J

[Britgirl]

Hi, you could try disabling UDP. You do that in Edit connection (Right click the connection in Machines )-> Configuration -> Use UDP communication for multimedia data, and uncheck the box there. Then try to connect.

If that doesn’t help, we need to see the logs from both computers.  You can extract them using the instructions here: https://kb.nomachine.com/DT08U00298#1 and #1.2.

Send them to forum[at]nomachine[dot]com. Please use the title of this topic as the subject of your email. Thanks!

[Author]

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