I've migrated from the Libreelec Jellyfin addo to the Linuxserver Jellyfin implementation. One of the remaining issues was missing TV channel icons from TVheadend.
In reading around this issue I did not find a solution / workaround that worked for me. However, I happenstanced on this workaround which may save someone much effort.
Based on this thread - https://github.com/jellyfin/jelly…adend/issues/15
Setup Anon user with web GUI access on TVheadend.
TVheadend > Configuration > Users > Add
In the pop up: username = *
Configure the remainder of the settings per your requirements.
In the Jellyfin TVheadend plugin blank user and password fields.
Change jellyfin addon settings to enable Use host networking.
In Jellyfin GUI add a m3u tuner under Dashboard > Live TV, for example
h**p://anon@[your_TVheadend_IP_address:9981/playlist/channels.m3u
The bit - anon@ - may not be required. It was a hangover of previous attempts to get to a solution.
Hit Refresh data guide.
Channel icons (but no EPG) should be pulled down into the Jellyfin Live TV Guide.
In the Jellyfin TVheadend plugin enter your TVheadend client user credentials into the user and password fields.
Delete the m3u tuner (created above).
Restart the Jellyfin server.
Hit Refresh data guide.
Change jellyfin addon disable Use host networking.
I guess this should be redone when channel icon changes.
If you have more sustainable solution I'd be very interested in it.