我的蓝牙连接非常不稳定，在尝试连接配对设备时，我经常在 blueman 中收到不同的错误消息。其中一个是“连接失败：输入/输出错误”，另一个是“连接失败：le-connection-about-by-local”。有时我的蓝牙鼠标已连接但无法工作，然后断开连接。此外，偶尔，如果我的耳机已连接，声音会断断续续——我不知道这是否是问题的一部分，但可能值得一提。
我在一台较旧的笔记本电脑上安装了相同版本的 Ubuntu，蓝牙工作正常。我希望这是一个软件问题，而不是硬件问题。
以下是输出inxi -Fxz
System:
Kernel: 5.15.0-57-lowlatency x86_64 bits: 64 compiler: gcc v: 11.3.0
Desktop: MATE 1.26.0 Distro: Ubuntu 22.04.1 LTS (Jammy Jellyfish)
Machine:
Type: Laptop System: LENOVO product: 82K2 v: IdeaPad Gaming 3 15ACH6
serial: <superuser required>
Mobo: LENOVO model: LNVNB161216 v: SDK0J40700 WIN
serial: <superuser required> UEFI: LENOVO v: H3CN30WW(V2.00)
date: 06/28/2021
Battery:
ID-1: BAT1 charge: 37.2 Wh (80.2%) condition: 46.4/45.0 Wh (103.1%)
volts: 12.1 min: 11.5 model: 0x53 0x4D 0x50 0x00 0x32 0x30 0x 0x4C 0x32
0x30 0x4D 0x33 0x50 0x4500
status: Discharging
CPU:
Info: 6-core model: AMD Ryzen 5 5600H with Radeon Graphics bits: 64
type: MT MCP arch: Zen 3 rev: 0 cache: L1: 384 KiB L2: 3 MiB L3: 16 MiB
Speed (MHz): avg: 1458 high: 1899 min/max: 400/4280 boost: enabled cores:
1: 1662 2: 1738 3: 1063 4: 1298 5: 1899 6: 1611 7: 1221 8: 1719 9: 977
10: 1461 11: 1393 12: 1465 bogomips: 79049
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
Device-1: NVIDIA GA107M [GeForce RTX 3050 Ti Mobile] vendor: Lenovo
driver: nvidia v: 525.60.11 bus-ID: 01:00.0
Device-2: AMD Cezanne vendor: Lenovo driver: amdgpu v: kernel
bus-ID: 05:00.0
Device-3: IMC Networks Integrated Camera type: USB driver: uvcvideo
bus-ID: 1-3:3
Display: x11 server: X.Org v: 1.21.1.3 driver: X:
loaded: amdgpu,ati,nvidia unloaded: fbdev,modesetting,nouveau,vesa
gpu: amdgpu resolution: 1920x1080~120Hz
OpenGL: renderer: NVIDIA GeForce RTX 3050 Ti Laptop GPU/PCIe/SSE2
v: 4.6.0 NVIDIA 525.60.11 direct render: Yes
Audio:
Device-1: AMD Renoir Radeon High Definition Audio vendor: Lenovo
driver: snd_hda_intel v: kernel bus-ID: 05:00.1
Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor
vendor: Lenovo driver: N/A bus-ID: 05:00.5
Device-3: AMD Family 17h HD Audio vendor: Lenovo driver: snd_hda_intel
v: kernel bus-ID: 05:00.6
Sound Server-1: ALSA v: k5.15.0-57-lowlatency running: yes
Sound Server-2: JACK v: 1.9.20 running: no
Sound Server-3: PulseAudio v: 15.99.1 running: no
Sound Server-4: PipeWire v: 0.3.48 running: yes
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Lenovo driver: r8169 v: kernel port: 2000 bus-ID: 02:00.0
IF: enp2s0 state: down mac: <filter>
Device-2: MEDIATEK MT7921 802.11ax PCI Express Wireless Network Adapter
vendor: Lenovo driver: mt7921e v: kernel bus-ID: 03:00.0
IF: wlo1 state: up mac: <filter>
Bluetooth:
Device-1: Broadcom BCM20702A0 Bluetooth 4.0 type: USB driver: btusb v: 0.8
bus-ID: 1-2:2
Report: hciconfig ID: hci0 rfk-id: 2 state: up address: <filter>
bt-v: 2.1 lmp-v: 4.0
Device-2: Foxconn / Hon Hai Wireless_Device type: USB driver: btusb
v: 0.8 bus-ID: 1-4:4
Report: ID: hci1 rfk-id: 3 state: up address: <filter> bt-v: 3.0
lmp-v: 5.2
Drives:
Local Storage: total: 476.94 GiB used: 260.6 GiB (54.6%)
ID-1: /dev/nvme0n1 vendor: Samsung model: MZALQ512HBLU-00BL2
size: 476.94 GiB temp: 33.9 C
Partition:
ID-1: / size: 321.04 GiB used: 260.21 GiB (81.1%) fs: ext4 dev: /dev/dm-0
mapped: nvme0n1p6_crypt
ID-2: /boot size: 1.88 GiB used: 363.4 MiB (18.8%) fs: ext4
dev: /dev/nvme0n1p5
ID-3: /boot/efi size: 256 MiB used: 37.5 MiB (14.7%) fs: vfat
dev: /dev/nvme0n1p1
Swap:
Alert: No swap data was found.
Sensors:
System Temperatures: cpu: 46.0 C mobo: N/A
Fan Speeds (RPM): N/A
GPU: device: nvidia screen: :0.0 temp: 41 C device: amdgpu temp: 43.0 C
Info:
Processes: 410 Uptime: 1m Memory: 5.65 GiB used: 2.13 GiB (37.8%)
Init: systemd runlevel: 5 Compilers: gcc: 11.3.0 Packages: 3562 Shell: Bash
v: 5.1.16 inxi: 3.3.13
输出如下sudo dmesg |grep -i bluetooth：
[ 15.146287] Bluetooth: Core ver 2.22
[ 15.146318] NET: Registered PF_BLUETOOTH protocol family
[ 15.146320] Bluetooth: HCI device and connection manager initialized
[ 15.146325] Bluetooth: HCI socket layer initialized
[ 15.146328] Bluetooth: L2CAP socket layer initialized
[ 15.146331] Bluetooth: SCO socket layer initialized
[ 15.305589] Bluetooth: hci0: BCM: chip id 63
[ 15.307588] Bluetooth: hci0: BCM: features 0x07
[ 15.338576] Bluetooth: hci0: owen-IdeaPad-Gaming-3-15ACH6 #1
[ 15.338580] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[ 15.338663] Bluetooth: hci1: Device setup in 138095 usecs
[ 15.341727] Bluetooth: hci0: BCM: firmware Patch file not found, tried:
[ 15.341734] Bluetooth: hci0: BCM: 'brcm/BCM20702A1-0a5c-21e8.hcd'
[ 15.341737] Bluetooth: hci0: BCM: 'brcm/BCM-0a5c-21e8.hcd'
[ 15.477669] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 15.477674] Bluetooth: BNEP filters: protocol multicast
[ 15.477680] Bluetooth: BNEP socket layer initialized
[ 20.269474] Bluetooth: RFCOMM TTY layer initialized
[ 20.269485] Bluetooth: RFCOMM socket layer initialized
[ 20.269492] Bluetooth: RFCOMM ver 1.11
[ 34.392228] Bluetooth: hci0: corrupted ACL packet
[ 34.504588] Bluetooth: hci0: corrupted ACL packet
[ 34.505068] Bluetooth: hci0: corrupted ACL packet
[ 34.538469] Bluetooth: hci0: ACL packet for unknown connection handle 2816
[ 34.549697] Bluetooth: hci0: corrupted ACL packet
答案1
由于我的外部适配器出现一个神秘问题，当我遇到这个问题时，我必须拔下适配器然后重新插入；这样就可以解决问题。