Jugdish

[Jugdish]

I am not trying to connect more than once at the same time, I am simply trying to resume a single session later, and I’m unable to. To clarify, these are the steps:

1. Start nxserver
2. Connect via a client. A new virtual desktop is created.
3. Close that client window. The virtual desktop remains running on the server, and there are no clients connected to it.
4. Later, try to connect via a client again. I am using the exact same connection file and credentials. But the server is unable to connect me with the already created virtual desktop session. The logs say connection limit reached and unable to locate last session.

[Jugdish]

Ok, I’ve made progress, but still not working correctly. I upgraded nxserver to the latest version, so it now recognises the DisplayDefault key. I can now remote connect to my server using NoMachine, and I no longer receive the “No available sessions on this server” error message.

Instead, I am presented with a black screen. This seems to be tied to the XBMC instance running in full screen on DISPLAY :0. If I ssh into the server and kill the XBMC process, suddenly the remote NX window flashes and jumps to DISPLAY :1 where I am greeted with the Xfce4 desktop running there.

The question is, why is the XBMC process interfering with the NX window if it’s running in DISPLAY :0 and NX is supposed to be connecting to DISPLAY :1 ?

[Jugdish]

Hi, I’ve followed the instructions given, but I receive this error when trying to connect from another machine:

<No available sessions on this server>
The server was unable to make the local display available or access to the local display is disabled.

I have started a second X server on display :1 and I am running Xfce4 window manager on that display. When I hit Ctrl+Alt+F8 on the server, I see Xfce4 running fine.

I’ve also updated /usr/NX/etc/node.cfg to add the following line at the bottom:

DisplayDefault :1

(I should note that “DisplayDefault” was not among any of the keys listed in that file, and as far as I can tell is completely undocumented.)

I then restarted nxserver. So now here are all the relevant processes currently running:

1204 ? Ss 0:00 xinit startxfce4 — :1 vt8
1210 tty8 Ss+ 0:25 X :1 vt8
1549 ? S 0:00 xterm -geometry +1+1 -n login startxfce4
1556 pts/1 Ss+ 0:00 /bin/sh /etc/xdg/xfce4/xinitrc — /etc/X11/xinit/xserverrc
1577 pts/1 Sl+ 0:00 xfce4-session
1617 pts/1 S+ 0:00 xfwm4
2026 ? Sl 0:01 /usr/NX/bin/nxserver.bin root 1543 –startup
2047 ? Sl 0:00 /usr/NX/bin/nxd
2567 ? Sl 0:03 /usr/NX/bin/nxserver.bin -c /etc/NX/nxserver –login -H 6
25414 ? Sl 0:00 /usr/NX/bin/nxserver.bin –localsession

…and yet I cannot connect from another machine. Any ideas?

[Jugdish]

Perfect, those are exactly the kind of links I was after, thanks very much for your help!

[Jugdish]

Hi, thanks for your reply. So would this be a second instance of the X server used for DISPLAY :1 ?

At the moment my machine boots up in console mode, and I have an upstart script which launches XBMC via xinit. So the X server is started just for the XBMC process. To start a DM in DISPLAY :1 would this also be done via xinit, or can I somehow re-use the same X session that was spawned for XBMC?

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