WARNING: Linux n00b here
Running whatever is the version of Sonarr pulled down during apt-get
Same for mono version
Linux Mint 17.3
I followed the steps on the Git about installing Sonarr in Linux and it runs perfectly fine BUT, I think I have a file/folder permission issue. When I access Sonarr and add a series, I point it to my ‘Downloads’ folder. I added a series and closed the browser. When I went back in, my test series wasn’t there. I looked in the Mono console and saw messages about ‘such and such directory doesn’t exist’. I created a generic .MKV file in a ‘Season 1’ folder of the show I was testing and when I told Sonarr to refresh series data, it never added thumbnails or plot info for the show. I’m guessing something is messed up with permissions as if Sonarr can’t create/write to the directory I told it to use for the show.
I’m a total Linux n00b but since I’m not upgrading to the NSA’s new operating system (Win 10), I’m in the process of moving away from microSUCK and to Mint. (Maybe OpenSUSE later on.)
I screwed with this for the last 2+ hours then decided to step away before I punched the monitor. I’m sure it’s my ignorance with Linux that’s causing the problem so was wondering if anyone can give me things to check that could lead to a peaceful resolution. 
I’d gladly post logs but have no idea where to grab them from. (Not asking for help on that… I’ll Google around for ‘Sonarr linux log file location’ maybe tomorrow. Just need a break for now.
UPDATE: Never mind! I figured it out. I’m almost embarrassed to say this but the problem was the freaking metadata setting! I was looking at my Windows setup of Sonarr and was comparing settings and noticed that on my Windows setup, I had metadata for Emby and Kodi ‘enabled’ but on the Linux side, no meta data was enabled. I turned on ‘Kodi’ metadata and refreshed series data and BINGO! And the series I originally added ‘stuck’ when I checked it again…no idea why it didn’t earlier but oh well. Now, on to tackle setting up Plex Media Server and NZBDrone.
Also, no problems on setting up Sonarr to automagically restart at boot up!