Public bug reported:
I work remotely by running an XFCE session inside an X display created
by vnc4server. On Ubuntu xenial, this causes xfce4-notifyd to fail to
start up.
A transcript of my VNC startup script and the results:
simon@xenial:~$ cat ~/.vnc/xstartup
#!/bin/sh
exec setsid xfce4-session
simon@xenial:~$ vncserver :1
New 'xenial:1 (simon)' desktop is xenial:1
Starting applications specified in /home/simon/.vnc/xstartup
Log file is /home/simon/.vnc/xenial:1.log
simon@xenial:~$ ps xf | grep xfce4-notifyd
4017 pts/0 S+ 0:00 \_ grep --color=auto xfce4-notifyd
simon@xenial:~$ systemctl --user status xfce4-notifyd.service
● xfce4-notifyd.service - XFCE notifications service
Loaded: loaded (/usr/lib/systemd/user/xfce4-notifyd.service; static; vendor
preset: enabled)
Active: failed (Result: exit-code) since Wed 2020-10-07 11:29:41 BST; 27s ago
Process: 3943 ExecStart=/usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd
(code=exited, status
Main PID: 3943 (code=exited, status=1/FAILURE)
Oct 07 11:29:41 xenial systemd[3794]: Starting XFCE notifications service...
Oct 07 11:29:41 xenial xfce4-notifyd[3943]: Unable to init server: Could not
connect: Connection ref
Oct 07 11:29:41 xenial xfce4-notifyd[3943]: cannot open display:
Oct 07 11:29:41 xenial systemd[3794]: xfce4-notifyd.service: Main process
exited, code=exited, statu
Oct 07 11:29:41 xenial systemd[3794]: xfce4-notifyd.service: Failed with result
'exit-code'.
Oct 07 11:29:41 xenial systemd[3794]: Failed to start XFCE notifications
service.
simon@xenial:~$ exit
If I manually edit /usr/lib/systemd/user/xfce4-notifyd.service so that
it adds "--display :1" to the command line, then xfce4-notifyd starts up
correctly. (But obviously this is a horrible bodge that I only did
temporarily for diagnostic purposes :-)
So I conjecture that the X display parameter is somehow not finding its
way to xfce4-notifyd during startup, and that in the normal case nobody
notices because xfce4-notifyd defaults to trying to connect to :0.
System details: this can be reproduced on a clean, freshly installed
xubuntu 18.04 system (in a test VM, installed on 2020-10-07). The only
configuration I performed was to edit my ~/.vnc/xstartup so that it runs
xfce4-session (as shown in the transcript above).
simon@xenial:~$ lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04
simon@xenial:~$ apt-cache policy xfce4-notifyd
xfce4-notifyd:
Installed: 0.4.2-0ubuntu2
Candidate: 0.4.2-0ubuntu2
Version table:
*** 0.4.2-0ubuntu2 500
500 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
** Affects: xfce4-notifyd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1898858
Title:
xfce4-notifyd fails to start on displays other than :0
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