This is the cure:
from https://wiki.archlinux.org/title/Blueto ... connection
To make your headset auto connect you need to enable PulseAudio's switch-on-connect module. Do this by adding the following lines to /etc/pulse/default.pa:
Code: Select all
/etc/pulse/default.pa
### Automatically switch to newly-connected devices
load-module module-switch-on-connect