Jellyfin does not show its content on any device

Hi. See if anyone can help me with this.
In my case the service seems to start well, sudo systemctl status jellyfin does not present any error, but I can not see the content from any device ( laptop with VLC, Television…)
If I do sudo systemctl restart jellyfin I can see it in the devices.
I have it installed in Ubuntu 20.04, fresh install

Are you able to access it through the web interface at all?

If you’re on your Ubuntu computers it would be http://localhost:8096, or if it’s just on your network then http://IP_Address:8096 (e.g. http://192.168.0.100:8096).

Hi Anthony.
Yes, by web I can access without problem from another computer, such as from a laptop. But for example from that same laptop, with VLC I enter in Plug’n’Play Universal and I don’t see anything.
If I go to the server computer and run sudo systemctl restart jellyfin I can see it in the VLC without problems.

It sounds like something might be taking up the DLNA port, as the version in Jellyfin “doesn’t like to share”. Is there anything else installed and running that could use DLNA, like Plex or Emby?

Not that I know of. Is there any way to find out? Any command that can give me the information?

Maybe this can give some clues:

$ *sudo lsof -i -n -P | grep TCP | more*

systemd-r 1007 systemd-resolve   13u  IPv4  27485      0t0  TCP 127.0.0.53:53 (LISTEN)
cupsd     1048            root    6u  IPv6  30800      0t0  TCP [::1]:631 (LISTEN)
cupsd     1048            root    7u  IPv4  30801      0t0  TCP 127.0.0.1:631 (LISTEN)
**jellyfin  1134        jellyfin  283u  IPv6  34626      0t0  TCP *:8096 (LISTEN)**
gnome-she 2004         trooper   44u  IPv4  44746      0t0  TCP 192.168.1.45:33680->8.43.85.14:443 (CLOSE_WAIT)
dropbox   2319         trooper   62u  IPv4  45385      0t0  TCP 192.168.1.45:50026->162.125.36.1:443 (ESTABLISHED)
dropbox   2319         trooper   63u  IPv4  51330      0t0  TCP 192.168.1.45:47286->162.125.68.13:443 (ESTABLISHED)
dropbox   2319         trooper   66u  IPv4  47465      0t0  TCP 127.0.0.1:17600 (LISTEN)
dropbox   2319         trooper   74u  IPv4  46060      0t0  TCP 192.168.1.45:48204->162.125.19.131:443 (ESTABLISHED)
dropbox   2319         trooper   87u  IPv4  46459      0t0  TCP *:17500 (LISTEN)
dropbox   2319         trooper   88u  IPv6  46460      0t0  TCP *:17500 (LISTEN)
dropbox   2319         trooper   91u  IPv4  46473      0t0  TCP 192.168.1.45:50252->162.125.68.7:443 (ESTABLISHED)
dropbox   2319         trooper   94u  IPv4  47458      0t0  TCP 192.168.1.45:47298->162.125.68.13:443 (ESTABLISHED)
dropbox   2319         trooper  101u  IPv4  46476      0t0  TCP 192.168.1.45:47296->162.125.68.13:443 (ESTABLISHED)
dropbox   2319         trooper  103u  IPv4  46059      0t0  TCP 127.0.0.1:17603 (LISTEN)
dropbox   2319         trooper  108u  IPv4  47466      0t0  TCP 192.168.1.45:49720->162.125.68.17:443 (ESTABLISHED)

$ *sudo systemctl restart jellyfin*

$ *sudo lsof -i -n -P | grep TCP | more*

systemd-r 1007 systemd-resolve   13u  IPv4  27485      0t0  TCP 127.0.0.53:53 (LISTEN)
cupsd     1048            root    6u  IPv6  30800      0t0  TCP [::1]:631 (LISTEN)
cupsd     1048            root    7u  IPv4  30801      0t0  TCP 127.0.0.1:631 (LISTEN)
dropbox   2319         trooper   62u  IPv4  45385      0t0  TCP 192.168.1.45:50026->162.125.36.1:443 (ESTABLISHED)
dropbox   2319         trooper   63u  IPv4  51330      0t0  TCP 192.168.1.45:47286->162.125.68.13:443 (ESTABLISHED)
dropbox   2319         trooper   66u  IPv4  47465      0t0  TCP 127.0.0.1:17600 (LISTEN)
dropbox   2319         trooper   74u  IPv4  46060      0t0  TCP 192.168.1.45:48204->162.125.19.131:443 (ESTABLISHED)
dropbox   2319         trooper   87u  IPv4  46459      0t0  TCP *:17500 (LISTEN)
dropbox   2319         trooper   88u  IPv6  46460      0t0  TCP *:17500 (LISTEN)
dropbox   2319         trooper   91u  IPv4  46473      0t0  TCP 192.168.1.45:50252->162.125.68.7:443 (ESTABLISHED)
dropbox   2319         trooper   94u  IPv4  47458      0t0  TCP 192.168.1.45:47298->162.125.68.13:443 (ESTABLISHED)
dropbox   2319         trooper  101u  IPv4  46476      0t0  TCP 192.168.1.45:47296->162.125.68.13:443 (ESTABLISHED)
dropbox   2319         trooper  103u  IPv4  46059      0t0  TCP 127.0.0.1:17603 (LISTEN)
dropbox   2319         trooper  108u  IPv4  47466      0t0  TCP 192.168.1.45:49720->162.125.68.17:443 (ESTABLISHED)
**jellyfin  2817        jellyfin  283u  IPv6  53526      0t0  TCP *:8096 (LISTEN)**
**jellyfin  2817        jellyfin  293u  IPv4  56332      0t0  TCP 192.168.1.45:59814->192.168.1.45:8096 (ESTABLISHED)**
**jellyfin  2817        jellyfin  294u  IPv6  52854      0t0  TCP 192.168.1.45:8096->192.168.1.45:59814 (ESTABLISHED)**

I should have specified - we’re looking for port 1900/UDP.

When the system boots, there doesn’t seem to be anything on that port. After making the restart if it appears.

$ *sudo ss -plnut*

Netid                    State                     Recv-Q                    Send-Q                                       Local Address:Port                                          Peer Address:Port                    Process                                                        
udp                      UNCONN                    0                         0                                                  0.0.0.0:7359                                               0.0.0.0:*                        users:(("jellyfin",pid=1128,fd=297))                          
udp                      UNCONN                    0                         0                                            127.0.0.53%lo:53                                                 0.0.0.0:*                        users:(("systemd-resolve",pid=1002,fd=12))                    
udp                      UNCONN                    0                         0                                                  0.0.0.0:33377                                              0.0.0.0:*                        users:(("avahi-daemon",pid=1040,fd=14))                       
udp                      UNCONN                    0                         0                                                  0.0.0.0:631                                                0.0.0.0:*                        users:(("cups-browsed",pid=1127,fd=7))                        
udp                      UNCONN                    0                         0                                                  0.0.0.0:17500                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=89))                            
udp                      UNCONN                    0                         0                                                  0.0.0.0:5353                                               0.0.0.0:*                        users:(("avahi-daemon",pid=1040,fd=12))                       
udp                      UNCONN                    0                         0                                                     [::]:5353                                                  [::]:*                        users:(("avahi-daemon",pid=1040,fd=13))                       
udp                      UNCONN                    0                         0                                                     [::]:55613                                                 [::]:*                        users:(("avahi-daemon",pid=1040,fd=15))                       
tcp                      LISTEN                    0                         4096                                         127.0.0.53%lo:53                                                 0.0.0.0:*                        users:(("systemd-resolve",pid=1002,fd=13))                    
tcp                      LISTEN                    0                         5                                                127.0.0.1:631                                                0.0.0.0:*                        users:(("cupsd",pid=1043,fd=7))                               
tcp                      LISTEN                    0                         128                                                0.0.0.0:17500                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=87))                            
tcp                      LISTEN                    0                         128                                              127.0.0.1:17600                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=98))                            
tcp                      LISTEN                    0                         128                                              127.0.0.1:17603                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=103))                           
tcp                      LISTEN                    0                         5                                                    [::1]:631                                                   [::]:*                        users:(("cupsd",pid=1043,fd=6))                               
tcp                      LISTEN                    0                         128                                                   [::]:17500                                                 [::]:*                        users:(("dropbox",pid=3557,fd=88))                            
tcp                      LISTEN                    0                         512                                                      *:8096                                                     *:*                        users:(("jellyfin",pid=1128,fd=283))  

*$ sudo systemctl restart jellyfin*
*$ sudo ss -plnut*

Netid                    State                     Recv-Q                    Send-Q                                       Local Address:Port                                          Peer Address:Port                    Process                                                        
udp                      UNCONN                    0                         0                                            127.0.0.53%lo:53                                                 0.0.0.0:*                        users:(("systemd-resolve",pid=1002,fd=12))                    
udp                      UNCONN                    0                         0                                                  0.0.0.0:33377                                              0.0.0.0:*                        users:(("avahi-daemon",pid=1040,fd=14))                       
udp                      UNCONN                    0                         0                                                  0.0.0.0:631                                                0.0.0.0:*                        users:(("cups-browsed",pid=1127,fd=7))                        
udp                      UNCONN                    0                         0                                                  0.0.0.0:17500                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=89))                            
udp                      UNCONN                    0                         0                                                127.0.0.1:42263                                              0.0.0.0:*                        users:(("jellyfin",pid=3963,fd=298))                          
**udp                      UNCONN                    0                         0                                                  0.0.0.0:1900                                               0.0.0.0:*                        users:(("jellyfin",pid=3963,fd=291))**                          
udp                      UNCONN                    0                         0                                                  0.0.0.0:5353                                               0.0.0.0:*                        users:(("avahi-daemon",pid=1040,fd=12))                       
udp                      UNCONN                    0                         0                                             192.168.1.45:55090                                              0.0.0.0:*                        users:(("jellyfin",pid=3963,fd=299))                          
udp                      UNCONN                    0                         0                                                  0.0.0.0:55402                                              0.0.0.0:*                        users:(("jellyfin",pid=3963,fd=297))                          
udp                      UNCONN                    0                         0                                                     [::]:5353                                                  [::]:*                        users:(("avahi-daemon",pid=1040,fd=13))                       
udp                      UNCONN                    0                         0                                                     [::]:55613                                                 [::]:*                        users:(("avahi-daemon",pid=1040,fd=15))                       
tcp                      LISTEN                    0                         4096                                         127.0.0.53%lo:53                                                 0.0.0.0:*                        users:(("systemd-resolve",pid=1002,fd=13))                    
tcp                      LISTEN                    0                         5                                                127.0.0.1:631                                                0.0.0.0:*                        users:(("cupsd",pid=1043,fd=7))                               
tcp                      LISTEN                    0                         128                                                0.0.0.0:17500                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=87))                            
tcp                      LISTEN                    0                         128                                              127.0.0.1:17600                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=98))                            
tcp                      LISTEN                    0                         128                                              127.0.0.1:17603                                              0.0.0.0:*                        users:(("dropbox",pid=3557,fd=103))                           
tcp                      LISTEN                    0                         5                                                    [::1]:631                                                   [::]:*                        users:(("cupsd",pid=1043,fd=6))                               
tcp                      LISTEN                    0                         128                                                   [::]:17500                                                 [::]:*                        users:(("dropbox",pid=3557,fd=88))                            
tcp                      LISTEN                    0                         512                                                      *:8096                                                     *:*                        users:(("jellyfin",pid=3963,fd=283))