Ubuntu 20系统下Bose QC35蓝牙耳机配对失败问题求助

各位大佬好，我目前在用Ubuntu 20系统，之前蓝牙适配器已经成功连接了Magic Mouse和Bose QC35耳机，一直用得好好的。结果今天突然耳机没声音了，我先是在耳机那边清除了配对记录，又在bluetoothctl里删掉了设备，打算重新配对，结果一直报错Failed to pair: org.bluez.Error.AuthenticationFailed。试过重启pulseaudio、重启机器都没用，有没有大佬能帮忙解决下？

下面是我用bluetoothctl操作的完整日志：

joe@joe-Amd-Am4-Home-Office:~$ bluetoothctl

Agent registered

[CHG] Controller 00:1A:7D:DA:71:15 Pairable: yes

[bluetooth]# scan on

Discovery started

[CHG] Controller 00:1A:7D:DA:71:15 Discovering: yes

[NEW] Device 51:8C:8D:9A:33:F0 51-8C-8D-9A-33-F0

[NEW] Device 53:77:D5:C8:36:16 53-77-D5-C8-36-16

[NEW] Device 69:33:BA:A2:5D:E4 69-33-BA-A2-5D-E4

[NEW] Device 7E:EF:EC:A6:CD:3B 7E-EF-EC-A6-CD-3B

[NEW] Device 5E:BE:1B:F3:62:A6 5E-BE-1B-F3-62-A6

[NEW] Device 70:80:47:31:21:D0 LE-Joe's NC Headphones

[CHG] Device 7E:EF:EC:A6:CD:3B RSSI: -71

[NEW] Device 7B:A2:F1:F9:FF:64 7B-A2-F1-F9-FF-64

[CHG] Device 53:77:D5:C8:36:16 RSSI: -61

[CHG] Device 53:77:D5:C8:36:16 RSSI: -69

[CHG] Device 7E:EF:EC:A6:CD:3B RSSI: -83

[CHG] Device 7E:EF:EC:A6:CD:3B RSSI: -62

[bluetooth]# scan off

Discovery stopped

[CHG] Device 7B:A2:F1:F9:FF:64 TxPower is nil

[CHG] Device 7B:A2:F1:F9:FF:64 RSSI is nil

[CHG] Device 70:80:47:31:21:D0 TxPower is nil

[CHG] Device 70:80:47:31:21:D0 RSSI is nil

[CHG] Device 5E:BE:1B:F3:62:A6 TxPower is nil

[CHG] Device 5E:BE:1B:F3:62:A6 RSSI is nil

[CHG] Device 7E:EF:EC:A6:CD:3B TxPower is nil

[CHG] Device 7E:EF:EC:A6:CD:3B RSSI is nil

[CHG] Device 69:33:BA:A2:5D:E4 TxPower is nil

[CHG] Device 69:33:BA:A2:5D:E4 RSSI is nil

[CHG] Device 53:77:D5:C8:36:16 TxPower is nil

[CHG] Device 53:77:D5:C8:36:16 RSSI is nil

[CHG] Device 51:8C:8D:9A:33:F0 RSSI is nil

[CHG] Controller 00:1A:7D:DA:71:15 Discovering: no

[bluetooth]# trust 70:80:47:31:21:D0

[CHG] Device 70:80:47:31:21:D0 Trusted: yes

Changing 70:80:47:31:21:D0 trust succeeded

[bluetooth]# pair 70:80:47:31:21:D0

Attempting to pair with 70:80:47:31:21:D0

[CHG] Device 70:80:47:31:21:D0 Connected: yes

Failed to pair: org.bluez.Error.ConnectionAttemptFailed

[CHG] Device 70:80:47:31:21:D0 Connected: no

[DEL] Device 69:33:BA:A2:5D:E4 69-33-BA-A2-5D-E4

[DEL] Device 53:77:D5:C8:36:16 53-77-D5-C8-36-16

[DEL] Device 51:8C:8D:9A:33:F0 51-8C-8D-9A-33-F0

[DEL] Device 7B:A2:F1:F9:FF:64 7B-A2-F1-F9-FF-64

[DEL] Device 7E:EF:EC:A6:CD:3B 7E-EF-EC-A6-CD-3B

[DEL] Device 5E:BE:1B:F3:62:A6 5E-BE-1B-F3-62-A6

[bluetooth]# exit

joe@joe-Amd-Am4-Home-Office:~$

另外，我运行pactl list short | grep blue的输出如下：

joe@joe-Amd-Am4-Home-Office:~$ pactl list short | grep blue

7   module-bluetooth-policy

8   module-bluetooth-discover

9   module-bluez5-discover

joe@joe-Amd-Am4-Home-Office:~$

备注：内容来源于stack exchange，提问作者Joe