the default hotspot mode is what I needed but I had to switch briefly to connect to an internet connection in order to get the autostart plugin.
after this I tried deleting the password field for that network so as to force volumio to go back to hotspot.
this had no effect so I ticked the Hotspot Fallback option.
this works. Eventually. As the info box states fallback happens after it retries connecting to a ‘known’ network.
so it remembers the internet connection and spends too long trying to connect even though I have removed the password.
where does this remembered network get stored? I want to get rid of it and untick Hotspot Fallback to get an instantaneous hotspot.
I have tried deleting matching fields from /data/configuration/system_controller/network/config.json
and removing the definition from /etc/wpa_supplicant/wpa_supplicant.conf
but it persists in its massive delay.