总结一下我的问题，我试图将我的 airpods 作为耳机连接到我的电脑，但我的电脑甚至没有检测到我的 airpods 作为要连接的设备。在 /etc/bluetooth/main.conf 中将 ControllerMode 切换为“Dual”、“le”或“bredr”并不能解决问题。
我开始查看论坛，输入了一些命令来获取信息，并得到了以下输出，最后一行出现错误 Bluetooth: hci0: ... :
@latitude5400:~$ uname -a; lspci -nnk | grep -iA3 net; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetooth
Linux latitude5400 5.4.0-81-generic #91-Ubuntu SMP Thu Jul 15 19:09:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
00:14.3 Network controller [0280]: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] [8086:9df0] (rev 30)
DeviceName: Onboard - Ethernet
Subsystem: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] [8086:4030]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
--
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (6) I219-V [8086:15be] (rev 30)
DeviceName: Onboard - Ethernet
Subsystem: Dell Ethernet Connection (6) I219-V [1028:08b8]
Kernel driver in use: e1000e
Kernel modules: e1000e
01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0bda:5539 Realtek Semiconductor Corp. Integrated_Webcam_HD
Bus 001 Device 003: ID 8087:0aaa Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[87364.768825] Bluetooth: hci0: Ignoring error of Inquiry Cancel command
[88846.069775] Bluetooth: hci0: failed to restart LE scan: status 31
[88846.073726] Bluetooth: hci0: command 0x2042 tx timeout
[89326.411054] Bluetooth: hci0: Ignoring error of Inquiry Cancel command
bluetooth 548864 37 btrtl,btintel,btbcm,bnep,btusb,rfcomm
ecdh_generic 16384 2 bluetooth
@latitude5400:~$ sudo service bluetooth status
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2021-09-17 10:42:11 CEST; 30min ago
Docs: man:bluetoothd(8)
Main PID: 17114 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 18923)
Memory: 2.4M
CGroup: /system.slice/bluetooth.service
└─17114 /usr/lib/bluetooth/bluetoothd
sept. 17 10:42:11 latitude5400 systemd[1]: Started Bluetooth service.
sept. 17 10:42:11 latitude5400 bluetoothd[17114]: Starting SDP server
sept. 17 10:42:11 latitude5400 bluetoothd[17114]: Bluetooth management interface 1.14 initialized
sept. 17 10:42:11 latitude5400 bluetoothd[17114]: Endpoint registered: sender=:1.69 path=/MediaEndpoint/A2DPSink/sbc
sept. 17 10:42:11 latitude5400 bluetoothd[17114]: Endpoint registered: sender=:1.69 path=/MediaEndpoint/A2DPSource/sbc
sept. 17 10:42:20 latitude5400 bluetoothd[17114]: SET_CONFIGURATION request rejected: Configuration not supported (41)
sept. 17 10:48:32 latitude5400 bluetoothd[17114]: Unable to get connect data for Headset Voice gateway: getpeername: Transport endpoint is not connected (107)
sept. 17 10:48:33 latitude5400 bluetoothd[17114]: connect error: Connection refused (111)
sept. 17 10:48:33 latitude5400 bluetoothd[17114]: a2dp-source profile connect failed for 4C:1D:96:E2:43:47: Device or resource busy
sept. 17 10:48:35 latitude5400 bluetoothd[17114]: connect error: Connection refused (111)
@latitude5400:~$ dpkg -l |grep blue
ii blueman 2.1.2-1ubuntu0.2 amd64 Graphical bluetooth manager
ii bluez 5.53-0ubuntu3.3 amd64 Bluetooth tools and daemons
ii bluez-btsco 1:0.50-0ubuntu7 amd64 Bluez Bluetooth SCO tool
ii bluez-cups 5.53-0ubuntu3.3 amd64 Bluetooth printer driver for CUPS
ii bluez-dbg 5.53-0ubuntu3.3 amd64 Bluetooth tools and daemons (with debugging symbols)
ii bluez-hcidump 5.53-0ubuntu3.3 amd64 Analyses Bluetooth HCI packets
ii bluez-obexd 5.53-0ubuntu3.3 amd64 bluez obex daemon
ii bluez-tests 5.53-0ubuntu3.3 amd64 BlueZ test tools and scripts
ii bluez-tools 2.0~20170911.0.7cb788c-2build1 amd64 Set of tools to manage Bluetooth devices for linux
ii gir1.2-gnomebluetooth-1.0:amd64 3.34.3-0ubuntu1 amd64 Introspection data for GnomeBluetooth
ii gnome-bluetooth 3.34.3-0ubuntu1 amd64 GNOME Bluetooth tools
ii libbluetooth3:amd64 5.53-0ubuntu3.3 amd64 Library to use the BlueZ Linux Bluetooth stack
ii libbluetooth3-dbg 5.53-0ubuntu3.3 amd64 Library to use the BlueZ Linux Bluetooth stack with debugging symbols
ii libgnome-bluetooth13:amd64 3.34.3-0ubuntu1 amd64 GNOME Bluetooth tools - support library
ii pulseaudio-module-bluetooth 1:13.99.1-1ubuntu3.11 amd64 Bluetooth module for PulseAudio sound server
最后
@latitude5400:~$ rfkill list all
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
2: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
。作为附加信息，我可以连接到其他设备（例如 iPhone 或扬声器）并正确使用它们。我的最终目标是连接我的耳机，但有关问题可能来自何处的任何信息，如果我的内核和我的蓝牙设备之间存在兼容性问题或其他问题，都会非常有用。
有关我的系统配置的附加信息：系统：Ubuntu 20.04.3 LTS - 64 位 GNOME 版本：3.36.8 内核版本：5.4.0-81-generic
预先感谢您的帮助。