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Thread: Bluetooth disconnects occasionally

  1. #1

    Question Bluetooth disconnects occasionally

    I recently reloaded my Lenovo P15 with Leap 15.3. Most things working very well, with the exception of Bluetooth. I have now tried two different headsets, and both connect just fine and sound great, 90% of the time. But every so often, the device disconnects from bluetooth for 10-15 seconds, and then reconnects like I just turned it on. I did not see this issue on Tumbleweed before on this same hardware. Looking in dmesg, I see this

    Code:
    input: MP33834 (AVRCP) as /devices/virtual/input/input74
    
    
    when it reconnects. The inputXX number increments each time it happens. Any thoughts on what I might try to get this more stable?

    Code:
    kanawha:/home/dsims/Downloads # uname -a
    Linux kanawha 5.3.18-59.40-default #1 SMP Mon Jan 3 18:43:20 UTC 2022 (34edd9c) x86_64 x86_64 x86_64 GNU/Linux
    
    

  2. #2
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    Question Re: Bluetooth disconnects occasionally

    Quote Originally Posted by dwains View Post
    Most things working very well, with the exception of Bluetooth.
    Please take a look at the output of “rfkill list” and “bluetoothctl show/list/scan on/devices” – please also check the status of the systemd Bluetooth services.
    • Do you have Bluetooth Mesh enabled? – “meshctl” …

  3. #3

    Default Re: Bluetooth disconnects occasionally

    Code:
    kanawha:/home/dsims/Downloads # systemctl status bluetooth.service  
     bluetooth.service - Bluetooth service
        Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
        Active: active (running) since Fri 2022-01-21 14:22:07 EST; 6 days ago
          Docs: man:bluetoothd(8)
      Main PID: 2116 (bluetoothd)
        Status: "Running"
         Tasks: 1 (limit: 4915)
        CGroup: /system.slice/bluetooth.service
                └─2116 /usr/lib/bluetooth/bluetoothd
    
    Jan 28 01:04:52 kanawha bluetoothd[2116]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107)
    Jan 28 01:05:01 kanawha bluetoothd[2116]: /org/bluez/hci0/dev_FC_58_FA_AB_75_18/sep1/fd39: fd(31) ready
    Jan 28 01:33:15 kanawha bluetoothd[2116]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107)
    Jan 28 01:33:33 kanawha bluetoothd[2116]: /org/bluez/hci0/dev_FC_58_FA_AB_75_18/sep1/fd40: fd(31) ready
    Jan 28 08:30:22 kanawha bluetoothd[2116]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107)
    Jan 28 08:30:27 kanawha bluetoothd[2116]: /org/bluez/hci0/dev_FC_58_FA_AB_75_18/sep1/fd41: fd(31) ready
    Jan 28 08:38:15 kanawha bluetoothd[2116]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107)
    Jan 28 08:38:37 kanawha bluetoothd[2116]: /org/bluez/hci0/dev_FC_58_FA_AB_75_18/sep1/fd42: fd(31) ready
    Jan 28 08:42:12 kanawha bluetoothd[2116]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107)
    Jan 28 09:33:39 kanawha bluetoothd[2116]: /org/bluez/hci0/dev_FC_58_FA_AB_75_18/sep1/fd43: fd(31) ready
    kanawha:/home/dsims/Downloads # rfkill list
    0: tpacpi_bluetooth_sw: Bluetooth
           Soft blocked: no
           Hard blocked: no
    1: phy0: Wireless LAN
           Soft blocked: no
           Hard blocked: no
    2: hci0: Bluetooth
           Soft blocked: no
           Hard blocked: no
    kanawha:/home/dsims/Downloads #
    
    

    meshctl is installed, but seems unconfigured. I never did anything actively to set this up for sure.

  4. #4

    Default Re: Bluetooth disconnects occasionally

    Try to use newer kernel with Leap.

  5. #5
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    Default Re: Bluetooth disconnects occasionally

    Quote Originally Posted by dwains View Post
    I have now tried two different headsets, and both connect just fine and sound great, 90% of the time.
    Sometimes these devices have to be updated.
    • Unfortunately, they usually (often) do not support updates when connected to a Linux system.

    Possibly, you'll have to find a Windows system, install all the drivers for the devices and, update the device firmware.
    • Then, try again with Linux.

  6. #6

    Default Re: Bluetooth disconnects occasionally

    I have never updated any firmware on a headset. I did not know that was a thing you had to do.

  7. #7
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    Default Re: Bluetooth disconnects occasionally

    What would help is if you can find out what makes the headset disconnect, the message you posted is about the reconnect, but I expect you can find also message about the disconnect.

    Although you do not see (yet?) the problem on Tumbleweed, I would not rule out that a headset can be disconnected for example by WiFi interference.

  8. #8
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    Cool Re: Bluetooth disconnects occasionally

    Quote Originally Posted by dwains View Post
    I did not know that was a thing you had to do.
    The headset is loaded with firmware at the factory – it's boxed and delivered to a handler who stores the box for some indeterminate period of time – in the mean time the factory discovers some issues introduced by the firmware's developers and issues firmware patches and/or updates – at some later point in time, someone buys the box «with the outdated firmware» from the last handler in the chain …

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