I run Volumio 0.979 (the latest one) on a Raspberry Pi 3 with HifiBerry AMP+. So WiFi is built into the Pi.
I can easily connect to my WiFi network when having a cable in. The signal strength is good.
When I boot Volumio (or reboot) it seems I only have about 50% chance of Volumio connecting to the WiFi network. If it doesn’t it becomes inaccessible (but a Volumio WiFi hotspot does appear in the list of WiFi networks available). I then pull the Pi’s power and start it up again, repeatedly, until Volumio works.
The WiFi problem seem to happen randomly; it’s very strange.
(Maybe related, I sometimes have to use the IP address to access Volumio when volumio/ won’t work.)
As I need WiFi to work, I am quite desperate now for some guidance or new ideas… Thanks.