Odd behaviour with IR Remote Controller & Display Plug ins

I downloaded a fresh install of Volumio. Added the IR Remote Controller plug in, and it worked great. Rebooted then added the Touch Display plugin. Works fine. However remote now doesn’t work. Investigations show that LIRC fails to start. I can manually restart “sudo systemctl restart lirc” and it works fine. I then turned the Touch Display plugin “Off” and rebooted and IR remote now works OK. Oddly, the Touch display works fine too, even though the plugin is “Off”

Now I find that LIRC also fails to start if I enable WiFi. Again, all I have to do to get it working again is sudo service lirc restart. Disabling WiFi causes it to start normally.

volumio@kitchen:~$ sudo service lirc status
● lirc.service - LSB: Starts LIRC daemon.
Loaded: loaded (/etc/init.d/lirc)
Active: active (exited) since Wed 2017-12-06 12:26:36 UTC; 14min ago
Process: 1290 ExecStart=/etc/init.d/lirc start (code=exited, status=0/SUCCESS)

Dec 06 12:26:36 kitchen lirc[1290]: Starting remote control daemon(s) : LIRC : failed!
Dec 06 12:26:36 kitchen lirc[1290]: Starting execution daemon: irexec: failed!
Dec 06 12:26:36 kitchen systemd[1]: Started LSB: Starts LIRC daemon…

Anybody any ideas how I can debug this? I need to find out what is causing the daemon start to fail during boot, yet start normally manually afterwards.