I have a problem, that I can reproduce every time. My server is Ubuntu 18.04 MATE, NoMachine 6.9.2-1, Nvidia GTX 710 with proprietary drivers (440.82-0ubuntu0~0.18.04.1).
The problem itself is simple: when I disconnect a client, the server freezes.
It’s not a system freeze, but I don’t get back the control of the desktop. The cursor moves around when I move the mouse, but I can’t click, and the keyboard doesn’t have any effect.
I can switch terminal via Ctrl+Alt+F1. I can reconnect another time with a client, and the remote connection works.
The only way to be able to use the server again is to kill the desktop session (in my case, pkill mate-session
). Stopping the NM service (systemctl stop nxserver
) doesn’t get control back.
I’ve tried disablling the GPU acceleration, but it doesn’t have any effect.
Thanks!