The problem with the headset connection was caused by a missing package in xubuntu. I installed pulseaudio-module-bluetooth and now everything works as expected!
To summarize:
For xubuntu, pulseaudio-module-bluetooth should be included by default.
For wily, the files
/lib/firmware/ar3k/AthrBT_0x31010100.dfu
/lib/firmware/ar3k/ramps_0x31010100_40.dfu
should be included.
For xenial, the .dfu files are present, but the kernel should be patched.
The problem with the headset connection was caused by a missing package in xubuntu. I installed pulseaudio- module- bluetooth and now everything works as expected!
To summarize:
For xubuntu, pulseaudio- module- bluetooth should be included by default.
For wily, the files ar3k/AthrBT_ 0x31010100. dfu ar3k/ramps_ 0x31010100_ 40.dfu
/lib/firmware/
/lib/firmware/
should be included.
For xenial, the .dfu files are present, but the kernel should be patched.