No desktop available (Kubuntu 22.04)

Forums / NoMachine for Linux / No desktop available (Kubuntu 22.04)

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  • #41050
    boospy
    Participant

    Hello all,

    I am using here Kubuntu 22.04 as Server and as client. On other computers with the same system NX is working fine. But this one doesn’t really want to. At some point in 20.04, nx stopped working properly. Meaning: When you log in, you come to the normal NX menu and see “no desktop available”. The PHY screen is not available.

    I have now completely uninstalled NoMachine here on 22.04, deleted all remaining files with rm, rebooted and reinstalled. Same behaviour.

    What could be the problem here? What logs do you need to help me? NX Version 8.1.2-1

    Very thanks

    Best Regards 🙂

    #41191
    Britgirl
    Keymaster

    Hi, we are aware of an issue related to Wayland and the workaround for the moment is to disable Wayland and user X.org. Can you send us the logs of the remote Kubuntu server so we can check it’s the same issue we are currently investigating? Please consult the following document for instructions on how to extract the logs and submit them here, or send them directly to forum[at]nomachine[dot]com making sure to use the title of this topic as the subject of your email. Thanks!

    https://kb.nomachine.com/DT07S00243

    #41279
    epiphany123
    Participant

    I am suffering from the same bug in Gnome Wayland sessions. The server doesn’t always start at boot.

     

    Nov 06 18:44:09 systemd[1]: nxserver.service: Deactivated successfully.

    Nov 06 18:44:09 systemd[1]: nxserver.service: Consumed 4.054s CPU time.

    #41380
    boospy
    Participant

    Ok, I have debugged. I have found out that it is the pam_automount. When I move the file, I can connect immediately. I also noticed that although I ignore the user NX in the file pam_mount.conf.xml, this option of the file is ignored. This means that no screen is started.

    Here are the Log during the login process: (sorry, didn’t find a code block for the post)

    Nov 11 19:12:04 kitten nxexec[106020]: (mount.c:68): Messages from underlying mount program:

    Nov 11 19:12:04 kitten nxexec[106020]: (mount.c:72): mount error(13): Permission denied

    Nov 11 19:12:04 kitten nxexec[106020]: (mount.c:72): Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)

    Nov 11 19:12:04 kitten kernel: CIFS: VFS: cifs_mount failed w/return code = -13

    Nov 11 19:12:04 kitten nxexec[106020]: (pam_mount.c:522): mount of Programme failed

    Nov 11 19:12:04 kitten audit[909]: AVC apparmor=”DENIED” operation=”open” profile=”/usr/sbin/sssd” name=”/proc/106039/cmdline” pid=909 comm=”sssd_nss” requested_mask=”r” denied_mask=”r” fsuid=0 ouid=0

    Nov 11 19:12:04 kitten kernel: CIFS: Attempting to mount \\data.tux.lan\iso-images

    Nov 11 19:12:04 kitten nxexec[106020]: (mount.c:68): Messages from underlying mount program:

    Nov 11 19:12:04 kitten nxexec[106020]: (mount.c:72): mount error(13): Permission denied

    Nov 11 19:12:04 kitten nxexec[106020]: (mount.c:72): Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)

    Nov 11 19:12:04 kitten kernel: CIFS: VFS: cifs_mount failed w/return code = -13

    Nov 11 19:12:04 kitten nxexec[106020]: (pam_mount.c:522): mount of iso-images failed

    Here is n line from the “/etc/security/pam_mount.conf.xml”

    rootsddmnx

    I have also a NoMachine Workstation Version here, and there it works fine. Both are 8.2.3-4. I have the logs when it failed also attached. Maybe someone can read out a useful error message.

    Thank you

    Best Regards 🙂

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