Tvheadend

What source did you use to install TVH from.

A few random things to try:

Do you have a firewall that could be blocking that port?

Do you get any particular message or does your browser just timeout?

You could try adding the parameter ‘--http_port nnnn’ to the tvheadend command line where nnnn is a port of your choosing. If you can connect to that port then tvheadend seems to be working and port 9981 could be in use by another task.

Do you have ssh/console access to the device? If so, if you run ‘ps aux|grep tvheadend’, how many instances do you see? (Should be 2, one for tvheadend and one for grep).

dmc@kodi-dev-v2:~$ ps aux |grep tvheadend
dmc       235568  0.1  0.7 1155680 31948 pts/3   Sl+  09:13   0:52 ./tvheadend --noacl
dmc       237455  0.0  0.0   9212  2432 pts/10   S+   16:56   0:00 grep --color=auto tvheadend

Assuming that you only see one real tvheadend, you can take the process ID, in my case 235568 (yours will be different) and see where it is actually running from:

dmc@kodi-dev-v2:~$ sudo ls -l /proc/235568/exe
lrwxrwxrwx 1 dmc dmc 0 Nov 12 09:13 /proc/235568/exe -> /my/secret/location/tvheadend

Perhaps that could give you some hints regarding where your configuration files are.

With your tvheadend service stopped, you could also try:

sudo cat /proc/net/tcp|grep -i 26FD

This will show you if another process is using port 9981.