Pixel Buds 2 headset-input/handsfree_head_unit profile unavailable
Summary
Using latest dev PA (as of d21d0d89), I'm unable to switch to handsfree_head_unit on Pixel Buds 2. (This doesn't work in previous versions either; I'm trying latest since it looks like a lot of work has gone into handsfree profiles recently.)
environment
Steps to reproduce
Pair Pixel Buds 2.
What is the current bug behavior?
handsfree_head_unit unavailable, but A2DP works fine.
Attempting to switch to this profile results in: pulseaudio[261829]: [pulseaudio] module-bluez5-device.c: Refused to switch profile to handsfree_head_unit: Not connected
What is the expected correct behavior?
Ability to switch to handsfree_head_unit.
Let me know what other debug information I can provide! I tried to enable verbose logging, but it didn't seem terrible informative.