我有一些蓝牙 5.0 耳机。它们可以很好地与我的 Android 手机配合使用，但当我将它们连接到我的 Ubuntu 18.04 笔记本电脑 (HP Spectre x360) 时，它们连接了一两秒钟，但随后声音有点冻结，并发出奇怪的声音，就像有什么东西撞坏了一样。
只是希望有人知道可以尝试什么。
的输出systemctl | grep -i blue为：
sys-devices-pci0000:00-0000:00:14.0-usb1-1\x2d7-1\x2d7:1.0-bluetooth-hci0.device loaded active plugged /sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0
sys-subsystem-bluetooth-devices-hci0.device loaded active plugged /sys/subsystem/bluetooth/devices/hci0
bluetooth.service loaded active running Bluetooth service
bluetooth.target loaded active active Bluetooth
的输出dmesg | grep -i blue为：
[ 15.559912] Bluetooth: Core ver 2.22
[ 15.559928] Bluetooth: HCI device and connection manager initialized
[ 15.559931] Bluetooth: HCI socket layer initialized
[ 15.559933] Bluetooth: L2CAP socket layer initialized
[ 15.559939] Bluetooth: SCO socket layer initialized
[ 15.592313] Bluetooth: hci0: read Intel version: 370810011003110e00
[ 15.596950] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[ 15.773296] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[ 15.790315] Bluetooth: hci0: Intel firmware patch completed and activated
[ 17.687442] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 17.687444] Bluetooth: BNEP filters: protocol multicast
[ 17.687448] Bluetooth: BNEP socket layer initialized
[ 49.401967] Bluetooth: RFCOMM TTY layer initialized
[ 49.401973] Bluetooth: RFCOMM socket layer initialized
[ 49.401978] Bluetooth: RFCOMM ver 1.11
[23668.832623] Bluetooth: hci0: read Intel version: 370810011003110e00
[23668.832631] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[23669.117611] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[23669.134650] Bluetooth: hci0: Intel firmware patch completed and activated
[27326.736738] Bluetooth: hci0: read Intel version: 370810011003110e00
[27326.736863] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[27326.996746] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[27327.013792] Bluetooth: hci0: Intel firmware patch completed and activated
[35858.296613] Bluetooth: hci0: read Intel version: 370810011003110e00
[35858.296623] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[35858.532597] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[35858.549611] Bluetooth: hci0: Intel firmware patch completed and activated
[38574.248283] Bluetooth: hci0: read Intel version: 370810011003110e00
[38574.248388] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[38574.472263] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[38574.489337] Bluetooth: hci0: Intel firmware patch completed and activated
[49428.524736] Bluetooth: hci0: read Intel version: 370810011003110e00
[49428.524741] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[49428.772715] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[49428.789740] Bluetooth: hci0: Intel firmware patch completed and activated
[49457.069618] Bluetooth: hci0: read Intel version: 370810011003110e00
[49457.069841] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[49457.359639] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[49457.376683] Bluetooth: hci0: Intel firmware patch completed and activated
[64426.066133] Bluetooth: hci0: read Intel version: 370810011003110e00
[64426.066147] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[64426.363108] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[64426.380127] Bluetooth: hci0: Intel firmware patch completed and activated
[76145.491667] Bluetooth: hci0: read Intel version: 370810011003110e00
[76145.491906] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[76145.743626] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[76145.760633] Bluetooth: hci0: Intel firmware patch completed and activated
[76274.188201] Bluetooth: hci0: read Intel version: 370810011003110e00
[76274.188205] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[76274.432187] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[76274.449202] Bluetooth: hci0: Intel firmware patch completed and activated
[78184.128673] Bluetooth: hci0: read Intel version: 370810011003110e00
[78184.128810] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[78184.340540] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[78184.357539] Bluetooth: hci0: Intel firmware patch completed and activated
[82111.923062] Bluetooth: hci0: read Intel version: 370810011003110e00
[82111.923067] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[82112.120036] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[82112.137037] Bluetooth: hci0: Intel firmware patch completed and activated
[90047.485285] Bluetooth: hci0: read Intel version: 370810011003110e00
[90047.485508] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[90047.784268] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[90047.801304] Bluetooth: hci0: Intel firmware patch completed and activated
[90230.749441] Bluetooth: hci0: read Intel version: 370810011003110e00
[90230.749446] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[90230.974392] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[90230.991415] Bluetooth: hci0: Intel firmware patch completed and activated
的输出lspci为：
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
00:13.0 Non-VGA unclassified device: Intel Corporation Sunrise Point-LP Integrated Sensor Hub (rev 21)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 (rev f1)
00:1c.2 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #3 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 61)
答案1
我在 Ubuntu 20.04 上遇到了和你描述的完全相同的问题。试试这个：
编辑蓝牙配置文件：
sudo nano /etc/bluetooth/main.conf
代替：
#ControllerMode = dual
和：
ControllerMode = bredr
重启蓝牙：
sudo service bluetooth restart
尝试再次连接您的耳机。