Ubuntu 22.04系统下荣耀MagicBook 14 2021蓝牙无法开启的问题求助

大家好，我用的是荣耀MagicBook 14 2021款，现在在Ubuntu 22.04系统里碰到了蓝牙没法开启的麻烦——在系统设置里拖动蓝牙开关滑块完全没反应，而且我已经确认BIOS里的蓝牙选项是开启状态的。

下面是我整理的系统、硬件信息，还有已经做过的排查操作及结果，希望能帮大家定位问题：

一、系统与硬件基础信息 #

• 系统内核版本：

  uname -a
  Linux ilya-NMH-WCX9 5.15.0-57-generic #63-Ubuntu SMP Thu Nov 24 13:43:17 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
  

• 无线网卡信息：

  sudo lspci -vvnn | grep -A 9 Network
  01:00.0 Network controller [0280]: Qualcomm Atheros QCNFA765 [17cb:1103] (rev 01)
  Subsystem: Foxconn International, Inc. Device [105b:e0cc]
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort+ <TAbort- <MAbort- >SERR- <PERR- INTx-
  Latency: 0, Cache Line Size: 64 bytes
  Interrupt: pin ? routed to IRQ 79
  IOMMU group: 7
  Region 0: Memory at d0000000 (64-bit, non-prefetchable) [size=2M]
  Capabilities: <access denied>
  Kernel driver in use: ath11k_pci
  

• USB设备列表：

  lsusb
  Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 003 Device 003: ID 27c6:5125 Shenzhen Goodix Technology Co.,Ltd. Goodix Fingerprint Device
  Bus 003 Device 002: ID 0489:e0e1 Foxconn / Hon Hai
  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 001 Device 002: ID 0408:1040 Quanta Computer, Inc. ov9734_techfront_camera
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  

二、已执行的排查操作及结果 #

1. 查看蓝牙服务启动日志：

   sudo journalctl -u bluetooth.service -b
   янв 18 12:58:10 ilya-NMH-WCX9 systemd[1]: Starting Bluetooth service...
   янв 18 12:58:10 ilya-NMH-WCX9 bluetoothd[738]: Bluetooth daemon 5.64
   янв 18 12:58:10 ilya-NMH-WCX9 bluetoothd[738]: Starting SDP server
   янв 18 12:58:10 ilya-NMH-WCX9 bluetoothd[738]: Bluetooth management interface 1>
   янв 18 12:58:10 ilya-NMH-WCX9 systemd[1]: Started Bluetooth service.
   янв 18 13:13:02 ilya-NMH-WCX9 bluetoothd[738]: Terminating
   янв 18 13:13:02 ilya-NMH-WCX9 systemd[1]: Stopping Bluetooth service...
   янв 18 13:13:02 ilya-NMH-WCX9 bluetoothd[738]: Stopping SDP server
   янв 18 13:13:02 ilya-NMH-WCX9 bluetoothd[738]: Exit
   янв 18 13:13:02 ilya-NMH-WCX9 systemd[1]: bluetooth.service: Deactivated succes>
   янв 18 13:13:02 ilya-NMH-WCX9 systemd[1]: Stopped Bluetooth service.
   янв 18 13:13:02 ilya-NMH-WCX9 systemd[1]: Starting Bluetooth service...
   янв 18 13:13:02 ilya-NMH-WCX9 bluetoothd[7199]: Bluetooth daemon 5.64
   янв 18 13:13:02 ilya-NMH-WCX9 systemd[1]: Started Bluetooth service.
   янв 18 13:13:02 ilya-NMH-WCX9 bluetoothd[7199]: Starting SDP server
   янв 18 13:13:02 ilya-NMH-WCX9 bluetoothd[7199]: Bluetooth management interface >
   

   看起来服务能正常启停，但蓝牙还是用不了。

2. 查看蓝牙相关内核日志：

   sudo dmesg | grep -i bluetooth
   [    2.287657] Bluetooth: Core ver 2.22
   [    2.287689] NET: Registered PF_BLUETOOTH protocol family
   [    2.287691] Bluetooth: HCI device and connection manager initialized
   [    2.287695] Bluetooth: HCI socket layer initialized
   [    2.287698] Bluetooth: L2CAP socket layer initialized
   [     2.287702] Bluetooth: SCO socket layer initialized
   [    3.609085] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
   [    3.609089] Bluetooth: BNEP filters: protocol multicast
   [    3.609094] Bluetooth: BNEP socket layer initialized
   

3. 检查蓝牙阻塞状态：

   • 初始状态：

     rfkill list
     0: hci0: Bluetooth
     Soft blocked: yes
     Hard blocked: no
     

   • 执行解除软阻塞命令后：

     sudo rfkill unblock bluetooth
     rfkill list
     0: hci0: Bluetooth
     Soft blocked: no
     Hard blocked: no
     1: phy0: Wireless LAN
     Soft blocked: no
     Hard blocked: no
     

   虽然软阻塞已经解除，但蓝牙还是无法正常开启。

4. 再次查看蓝牙相关日志时发现AppArmor的拒绝记录：

   sudo dmesg | grep -i blue
   [    2.287657] Bluetooth: Core ver 2.22
   [    2.287689] NET: Registered PF_BLUETOOTH protocol family
   [    2.287691] Bluetooth: HCI device and connection manager initialized
   [    2.287695] Bluetooth: HCI socket layer initialized
   [    2.287698] Bluetooth: L2CAP socket layer initialized
   [    2.287702] Bluetooth: SCO socket layer initialized
   [    3.609085] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
   [    3.609089] Bluetooth: BNEP filters: protocol multicast
   [    3.609094] Bluetooth: BNEP socket layer initialized
   [   72.457466] audit: type=1107 audit(1674035959.509:80): pid=741 uid=102 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/" interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" mask="send" name="org.bluez" pid=3408 label="snap.slack.slack" peer_pid=738 peer_label="unconfined"
   [ 5647.651483] [   7199]     0  7199     2621       98    57344        0             0 bluetoothd
   [ 5647.651486] [   7201]     0  7201    39315       92    69632        0             0 bluealsa
   [ 5895.671233] audit: type=1107 audit(1674041782.562:610): pid=741 uid=102 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/" interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" mask="send" name="org.bluez" pid=24670 label="snap.slack.slack" peer_pid=7199 peer_label="unconfined"
   

目前试过这些操作后问题还是没解决，有没有大佬能给点建议呀？

备注：内容来源于stack exchange，提问作者ILYCH