I recently updated my server from 14.04 to 16.04 LTS.
I had some issues, particularly with mysql and mythtv. Eventually I got it working, however .....
Whenever I do an update I get upstart error message:
status: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connection refused
when the updated application restarts. They are restarting, so systemd is doing its thing.
mythtv-setup is not working properly. It's not shutting down or restarting the backend as it should. Getting similar messages on the terminal.
The upstart binary is still on my system. I'm assuming that some startup scripts are also still there, hence the upstart errors when applications are starting.
Should I remove the upstart binary? Better still, purge it to remove any redundant scripts?
I'm nervous about doing this as the I don't want an unbootable box, although my gut feeling is it should be ok as systemd handles this now and seems to be working.