我的新ABS 桌面上安装了 Ubuntu 24.04 ，尽管 hciconfig、bluetoothctl 没有显示任何错误，但在扫描期间我却看不到任何设备。
$ hciconfig
hci0: Type: Primary Bus: USB
BD Address: FC:B0:DE:38:30:96 ACL MTU: 1021:8 SCO MTU: 255:12
UP RUNNING PSCAN ISCAN
RX bytes:5389 acl:0 sco:0 events:539 errors:0
TX bytes:19604 acl:0 sco:0 commands:519 errors:0
手动使用 bluetoothctl 执行以下操作：
$ bluetoothctl
Waiting to connect to bluetoothd...[bluetooth]# Agent registered
[bluetooth]# agent on
Agent is already registered
[bluetooth]# default-agent
[bluetooth]# Default agent request successful
[bluetooth]# scan on
[bluetooth]# SetDiscoveryFilter success
[bluetooth]# Discovery started
[bluetooth]# [CHG] Controller FC:B0:DE:38:30:96 Discovering: yes
[bluetooth]#
据我所知， lsmod 没有显示任何有趣的东西：
$ lsmod | grep btusb
btusb 77824 0
btrtl 32768 1 btusb
btintel 57344 1 btusb
btbcm 24576 1 btusb
btmtk 12288 1 btusb
bluetooth 1028096 46 btrtl,btmtk,btintel,btbcm,bnep,btusb,rfcomm
~ ⌚ 13:34:42
$ lsmod | grep bluetooth
bluetooth 1028096 46 btrtl,btmtk,btintel,btbcm,bnep,btusb,rfcomm
ecdh_generic 16384 2 bluetooth
以下是 的输出lsusb; sudo dmesg | egrep -i 'blue|firm'：
$ lsusb; sudo dmesg | egrep -i 'blue|firm'
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 003: ID 0b05:19af ASUSTek Computer, Inc. AURA LED Controller
Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0489:e112 Foxconn / Hon Hai Bluetooth Radio
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
[ 1.157720] usb 3-1: Product: Bluetooth Radio
[ 4.892212] systemd[1]: Mounting snap-firmware\x2dupdater-127.mount - Mount unit for firmware-updater, revision 127...
[ 4.893131] systemd[1]: Mounting snap-firmware\x2dupdater-147.mount - Mount unit for firmware-updater, revision 147...
[ 5.078863] Bluetooth: Core ver 2.22
[ 5.103287] NET: Registered PF_BLUETOOTH protocol family
[ 5.103290] Bluetooth: HCI device and connection manager initialized
[ 5.103294] Bluetooth: HCI socket layer initialized
[ 5.103296] Bluetooth: L2CAP socket layer initialized
[ 5.103303] Bluetooth: SCO socket layer initialized
[ 5.319068] rtw89_8851be 0000:08:00.0: loaded firmware rtw89/rtw8851b_fw.bin
[ 5.319858] rtw89_8851be 0000:08:00.0: Firmware version 0.29.41.3 (65cefb31), cmd version 0, type 5
[ 5.319861] rtw89_8851be 0000:08:00.0: Firmware version 0.29.41.3 (65cefb31), cmd version 0, type 3
[ 6.292072] [drm] Loading DMUB firmware via PSP: version=0x05000F00
[ 6.292458] [drm] Found VCN firmware Version ENC: 1.30 DEC: 3 VEP: 0 Revision: 4
[ 6.292464] amdgpu 0000:0b:00.0: amdgpu: Will use PSP to load VCN firmware
[ 7.299392] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 7.299396] Bluetooth: BNEP filters: protocol multicast
[ 7.299401] Bluetooth: BNEP socket layer initialized
[ 7.300285] Bluetooth: MGMT ver 1.22
[ 9.138499] Bluetooth: RFCOMM TTY layer initialized
[ 9.138505] Bluetooth: RFCOMM socket layer initialized
[ 9.138508] Bluetooth: RFCOMM ver 1.11
[ 7300.714099] audit: type=1400 audit(1738440042.768:183): apparmor="DENIED" operation="open" class="file" profile="snap.firmware-updater.firmware-notifier" name="/proc/sys/vm/max_map_count" pid=28130 comm="firmware-notifi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[18100.787075] audit: type=1400 audit(1738450842.532:184): apparmor="DENIED" operation="open" class="file" profile="snap.firmware-updater.firmware-notifier" name="/proc/sys/vm/max_map_count" pid=74038 comm="firmware-notifi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
此时我已经没有主意了，非常感谢任何帮助。为了“好玩”，这是我尝试使用 chat-gpt 进行的调试会话