Ubuntu 16.04 上的 Bose QC35 麦克风

Question

最近我买了 Bose QC35，它们很棒，但是，我在 Ubuntu 16.04 LTS 上设置它们时遇到了一些麻烦。

在几个 AskUbuntu 答案的帮助下，我设法将耳机连接到 PC，但我无法找到的一件事是如何在通话时使用耳机的麦克风。目前使用了非常糟糕的内置麦克风，当我尝试在声音输入设置中更改它时，我听到令人讨厌的吱吱声，并且声音输出从高保真播放模式更改为耳机头单元。由于这种吱吱作响的噪音，让我的头上戴着耳机 30 多岁是无法忍受的，所以我正在寻找一种解决方案，在不失去耳朵的情况下仍然使用耳机的麦克风。

Answer 1

I have the same microphoone problem with slack calls and also I have 16.04 LTS and QC35. BT music streaming (A2PD) is working perfectly and also when someone calls during streaming, I am able to use headphone microphone too (at least this was OK earlier before re-install of ubuntu due to another issue).

When during a call I selected QC35 in pavucontrol, then slack did not complain any more about missing audio input. BUT even if I did hear audio very well, my voice was not send.
Even if I select HSP/HFP (=BT call audio profile) at configuration tab of pavucontrol, I see only "monitor" of my QC35 as input device (as well default built-in audios). Also testing sound (front left, front right) seems to use only A2DP because did not hear any sound degradation when tried to change profile to narrow band HFP.

~/.config/pulse$
cat xxx-default-sink
bluez_sink.BT_ADDRESS
cat xxx-default-source
alsa_input.pci-0000_00_1f.3.analog-stereo
(Thus the source did not change even if tried)

Also btmon shows only ACL packets (instead of expected SCO), thus assuming that only A2DP connection is running.

update: Re-starting pulseaudio solved the problem, i.e., now able to use also mic and see those in pavucontrol those as expected. And passed tests: https://add_here.slack.com/help/test/calls

不幸的是，HFP 似乎会产生一些噪音，但这是另一个问题，已经在蓝牙耳机产生嘶嘶噪音中讨论过

Answer 2

我使用的是 18.04，但这对我在最后几个内核上有用。
在/etc/bluetooth/main.conf集合中ControllerMode = bredr