“No available sessions” on Linux server (Debian Buster)

[gersondiesel]

Hello!
I have a Debian Buster Linux and an iMac with BigSur.

My problem is when I try to connect to my Linux server from Mac or Android. Always the message “no available sessions” appears on client.

Attached are log files.

Attachments:

1. NoMachine-TSN-log.tar.gz

[kroy]

Do you have Desktop Environment (DE) installed on that debian? Is it headless? There is article with instructions how to install some GUI on linux: https://www.nomachine.com/AR04K00667#4.

If it’s headless after DE installation, please set adequate DefaultDesktopCommand in /usr/NX/etc/node.cfg (take a look on point 2.1 in mentioned article) and restart nxserver (sudo /usr/NX/bin/nxserver --restart). Then you should be able to connect.

[gersondiesel]

Yes, I have a Desktop Environment installed.

I have Cinnamon and Gnome Shell (Gnome 3) installed. I use Xorg instead of Wayland.

The Linux machine is an ASUS Nitro 5 notebook.

[kroy]

Did you reinstall NoMachine? We are aware of a similar problem. Please take a look at this Trouble Report: Problem uninstalling a version 7 and then installing version 7.1.3.
If this is your case, please use the described workaround.

[gersondiesel]

I uninstalled NoMachine with apt remove nomachine --purge, then I delete /usr/NX folder (rm -rf /usr/NX).

/var/NX doesnt exist.

I installed again with ‘dpkg -i nomachine_7.1.3_1_amd64.deb’.

But the same message appear on client (Android or Mac): No available session on this server.

[kroy]

It looks that there is a problem with the pam_mount module when creating sessions. Please refer to this article: How to solve hanging problems when creating a NoMachine session (pam_mount module is in use)

[gersondiesel]

Gotcha!

The problem was related to pam_mount. Thanks, Kroy!

I applied the second method from your indication How to solve hanging problems when creating a NoMachine session (pam_mount module is in use)

Thanks, again!

[Author]

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