I was able to test with a Live USB disk booting Kubuntu 17.10 and I'm sorry to say that there was no change: the HSP profile was still the default.
However, I'd also reported this upstream to the PulseAudio folks, and it looks like they've identified the problem and are preparing a fix: https://bugs.freedesktop.org/show_bug.cgi?id=103058 ** Bug watch added: freedesktop.org Bugzilla #103058 https://bugs.freedesktop.org/show_bug.cgi?id=103058 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1720684 Title: Bluetooth speaker used the HSP/HFP profile by default rather than the higher-quality A2DP profile To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1720684/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs