Why can't Plex DVR see both tuners for the WinTV? All other indicators show the presence of2 tuners.

The ubuntu 17.10-4.13 kernel is already patched and can see BOTH tuners, but my Plex DVR only shows 1 tuner in the GUI.

Kaffeine can see BOTH tuners:

/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Logs/ Plex Media Tuner.log indicates the presence of 2 tuners: (file attached)

Jan 25, 2018 12:30:54.355 [0x7f859f7fe700] INFO - * web_service_t::process_compound_devices. Merged 2 tuners for device dvb#v4l#/sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0:0013811907

The system logs indicate the presence of 2 tuners: (file attached)
[ 11.179301] dvbdev: DVB: registering new adapter (3-3:1.0)
[ 11.179303] em28xx 3-3:1.0: DVB: registering adapter 0 frontend 0 (LG Electronics LGDT3306A VSB/QAM Frontend)…
[ 11.179575] em28xx 3-3:1.0: DVB extension successfully initialized
:
[ 11.184439] dvbdev: DVB: registering new adapter (3-3:1.0)
[ 11.184441] em28xx 3-3:1.0: DVB: registering adapter 1 frontend 0 (LG Electronics LGDT3306A VSB/QAM Frontend)…
[ 11.184697] em28xx 3-3:1.0: DVB extension successfully initialized

The linux /dev filesystem indicates the presence of 2 tuners:

# ls -l /dev/dvb
total 0
drwxr-xr-x 2 root root 120 Jan 25 13:21 adapter0
drwxr-xr-x 2 root root 120 Jan 25 13:21 adapter1

My System:

OS: Ubuntu 17.10 (supported via Hauppauge PPA)
uname: uname -a
Linux daumas-media 4.13.0-19201712311231-generic #0+mediatree+hauppauge-Ubuntu SMP Sun Dec 31 21:14:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Plex: Version 1.11.0.4666

According to Hauppauge tech:

[Paraphrasing]: “The OS can see both tuners so it isn’t a Hauppauge driver problem. Check with Plex.”

What happens when you try to add the second tuner? Previous threads about the Hauppauge cards indicate that you have to add each tuner set into Plex. And specify the channels and mappings to each device separately. Not ideal but the way it seems to work.

daumas77 Linux and Windows done differently
You should be able to add another tuner in Linux Plex

When attempting to add the 2nd tuner, all the DVR Setup wizard does is spin endlessly, finding nothing…

I just finish install Ubuntu and Plex see both Tuner I have install 16.04.1