Hi there!Trisquel GNU/Linux consists entirely of free software. Perhaps your adapter doesn't have a free stack?
Can you can find the relevant entry from lspci? If not, paste the all of it.If you can't make your adapter work, you can buy a working USB bluetooth from https://www.thinkpenguin.com/gnu-linux/penguin-usb-bluetooth-micro-adapter-gnu-linux
I don't quite understand what button exactly don't work? Rhythmbox is one of the apps I uninstall right away... :)
