I had feedback in the kodi forum that my zap2xml grabber was not showing up in an ubuntu install - when I looked, it seemed that the file was not showing up as executable for others.
I work in between a virtualbox ubuntu install and windows. It seems that when I move the file to the windows drive - it loses that permission.
Is there a way to work in windows and keep the file with 777 permissions?
Quick question as I'm still learning. The addons I have built for tvheadend grabbers use #!/bin/sh at the top to make them executable as I work to develop under LE.
However, this apparently means the grabbers won't work on Ubuntu systems. That needs something like #!/bin/bash or #!/usr/bin/env bash
Does this mean I have to maintain two versions of the addon? Or is there a way to make this file executable on LE installations and other Linux installations like Ubuntu?
Post #1 updated with the v1.9 release
v1.9 (2017-08-03)
You can back up all your tvheadend settings by copying the userdata/addon_data/service.tvheadend42 folder
Then if you reinstall a clean tvheadend - just don't copy over the accesscontrol folder.
But - if you can access the accesscontrol folder - just open the files that are in there (with any text editor) and you can see what the username is. 
tvheadend will not be able to show previous recordings that were made before this installation. It will only have a database for recordings from this point on.
To solve combing the two - you want to setup your /var/media/TV/Recorded TV/ folder in your Kodi library.
From thej Kodi homescreen:
This will now add all your previous (and future) recordings to the Kodi TV Shows menu item
If you enable samba - just browse using whatever file manager you normally use. In my case - windows explorer (not internet explorer or edge)
The system shows up on the network as whatever system name - default was LIBREELEC
If you can't see it - yes you can just type in \\your.ip.address
through putty - you can change directory with cd - so:
cd /var/media/TV would switch to you your drive
then type ls to list all the folders/files on the drive
But here's a better tip - if you just want to browse the drive - if you enable samba in libreelec - you can browse the drive over the network from windows (or another os)
As for the path in tvheadend - yes it would be /var/media/TV/Recorded TV/
please note the last slash and for linux - upper/lower case matters
putty is easy to use for ssh from another pc - i don't think you can open a terminal in a browser.
For the recording path - if you're using my addon - the setting is in the DVR configuration section
If you're using the tvheadend web interface - it's under the CONFIGURATION > RECORDING tab
you will see a Recording system path: section
Just put in the path - so for example, I have a USB drive named REC - so my path is: /var/media/REC/
LE should mount your drive to the /var/media/NAME OF YOUR DRIVE path
If you want timeshifting to work (pause live tv) - then you need to enable and set a path on that tab as well.
You need to SSH from another system - there is not a terminal addon for kodi.
username is root password is libreelec
Then run
df -hand see if your harddrive is actually mounted. You may need to change permissions to write to existing folders - you can check permissions with ls
In case you need reference to commands: Common SSH Commands - Media Temple
I meant you might want to use the Titan skin if you use tvheadend - not mythtv.
Tvheadend just provides the information to the kodi pvr - so you can use whatever skin you like. If you like Myth TV - you might want to look at the Titan skin.
To setup tvheadend, It may be easiest to download my tvh2kodi addon - this will let you configure tvheadend from within the kodi interface and get you up and running with the basics pretty quickly.
tvh2kodi addon - configure tvheadend from kodi interface
You do need to install the tvheadend service and pvr client addons from the LE repository first. And disbable the mythtv addon.
Once you install the addons - just run tvh2kodi and to get a basic setup going, run the wizard. That will setup the network and one of the tuners and scan for channels. After that, you can enable the other tuners (in the adpaters section) so you have all four active and available.
OK - unfortunately I'm not experienced with MythTV - if you'd be interested in Tvheadend - happy to walk you through it! 
Otherwise, I'm sure someone else will chime in.
This card's drivers have been included in Linux kernel since 4.8 - looks like the log shows the hardware is recognized.
What version of LE and what version of tvheadend (or other pvr backend) software are you running?
Your model is showing as
Hauppauge model 166100, rev B2I6Just got caught up on that discussion - thanks for clarifying. For anyone else testing the Milhouse LE 9 builds - if you want the dual tuner support, just go into LibreELEC settings > System and at the bottom enable the CrazyCat DVB drivers and reboot.
FYI - Milhouse builds for RPi2/3 after #0727 the Hauppauge WinTV-Deual is only showing a single tuner.
This may be due to changes in the kernel?? Haven't checked to see if the patch was modified - but thought I would give a heads up as I know this was going to be included in the 8.2 release.
Glad to hear it's working! I haven't added tvh2kodi to the repo yet as it is still going through some rapid changes and testing. Probably will submit that when LE 8.2 is released.
Depedning on where you live - the data you are seeing in the guide is from the OTA signal. A lot of stations do not provide good data with that - so most people use internet data. In my signature below you will see links to my zap2xml and sd4tvh addons that can pull epg data from the internet. Zap2xml is gathered from the zap2it website (you'll need to create an account there) - sd4tvh is epg data from schedules direct. It's the best data there is, but you will need to pay $25/yr for it. (about $2 a month for really good data - with picons and logos!)
If you want to compile your own version - it is included in cvh's master repo - so you could build off of that. Or if your putting together your own repo (with parts from different places) - just use svn to pull the media_build/sources directory and then copy over the linux-220-hauppauge... patch:
svn https://github.com/CvH/LibreELEC.tv/trunk/master/packages/linux-drivers/media_build/sources/backportsThen add the line below to your media_build/patches/media_build-02-add-to-backports.patch file:
+add linux-220-hauppauge_dualhd_second_tuner_support.patchFinally - if you want to work off the main LE repo for your builds...the patch is included in branches 8.2 as well as master.
And if you want to live cutting edge alpha software without compiling yourself - just download the milhouse builds from LibreELEC Testbuilds for RaspberryPi (Kodi 18.0)
Have fun!
On page 6 (sorry can't get link on my mobile) I posted an LE 8 build with the patches. Also...there's an 8.2 test build...but if you want reliability I'd start with the 8.
If you look at Cvh's git repo, you can see the folder with the patches.