[mythtv-users] systemd suddenly won't start backend

[Bill Meek]

...

On 04/27/2018 08:31 AM, Michael T. Dean wrote:
> 
> Most likely a different environment (though not necessarily/likely PATH).  Your user's environment is properly configured--has a good $HOME, 
> which has a good $HOME/.mythtv/config.xml (based on "su -c mythtv mythbackend" working).  I'm guessing that the systemctl environment isn't set 
> up right (anymore).  Compare the logs and look at the "Using configuration directory" lines...

And ...

systemctl cat mythtv-backend.service will show what's in play. If the OP manually
changed things in /lib/systemd/system rather than making them in /etc/systemd/system,
then the package manager could have released a new version that overwrote the changes.

systemctl edit [--full] is useful if the above is true.

-- 
Bill