non-working bluetooth dongle - Dezen DZ-BTUAV5

tingo · Jan 12, 2025

I recently bought a cheap bluetooth dongle (because it was cheap, and I was buying other things): Dezen Bluetooth 5.0 USB, Mini adapter. Part number on the back of the packaging is DZ-BTUAV5. Plugged into a workstation that runs FreeBSD 13.4-release-p2

Code:

root@kg-core2:~ # freebsd-version -ku
13.4-RELEASE-p1
13.4-RELEASE-p2
root@kg-core2:~ # uname -a
FreeBSD kg-core2.kg4.no 13.4-RELEASE-p1 FreeBSD 13.4-RELEASE-p1 GENERIC amd64

from /var/log/messages, I see

Code:

Jan  9 21:48:43 kg-core2 kernel: ugen1.5: <vendor 0x0a12 USB2.0-BT> at usbus1
Jan  9 21:48:43 kg-core2 kernel: ubt0 on uhub3
Jan  9 21:48:43 kg-core2 kernel: ubt0: <vendor 0x0a12 USB2.0-BT, class 224/1, rev 1.10/88.91, addr 4> on usbus1
Jan  9 21:48:43 kg-core2 kernel: WARNING: attempt to domain_add(bluetooth) after domainfinalize()
Jan  9 21:48:43 kg-core2 kernel: WARNING: attempt to domain_add(netgraph) after domainfinalize()
Jan  9 21:48:43 kg-core2 root[77352]: /etc/rc.d/bluetooth: ERROR: Unable to setup Bluetooth stack for device ubt0

usbconfig device descriptor

Code:

root@kg-core2:~ # usbconfig -d ugen1.5 dump_device_desc
ugen1.5: <vendor 0x0a12 USB2.0-BT> at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0110 
  bDeviceClass = 0x00e0  <Wireless controller>
  bDeviceSubClass = 0x0001 
  bDeviceProtocol = 0x0001 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x0a12 
  idProduct = 0x0001 
  bcdDevice = 0x8891 
  iManufacturer = 0x0000  <no string>
  iProduct = 0x0002  <USB2.0-BT>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001

usbconfig - configuration

Code:

root@kg-core2:~ # usbconfig -d ugen1.5 dump_curr_config_desc
ugen1.5: <vendor 0x0a12 USB2.0-BT> at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)


 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x00c8 
    bNumInterfaces = 0x0002 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x00c0 
    bMaxPower = 0x0032 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0003 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0010 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0004  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 2
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0001 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0009 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0009 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 2
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0002 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0011 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0011 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 3
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0003 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0019 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0019 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 4
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0004 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0021 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0021 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 5
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0005 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0031 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0031 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 6
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0005 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x003f 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x003f 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000

pictures of the packaging

tingo · Jan 12, 2025

On a laptop running FreeBSD 14.1-release-p6

Code:

root@kg-starone:~ # freebsd-version -ku
14.1-RELEASE-p5
14.1-RELEASE-p6
root@kg-starone:~ # uname -a
FreeBSD kg-starone 14.1-RELEASE-p5 FreeBSD 14.1-RELEASE-p5 GENERIC amd64

the DZ-BTUAV5 shows up in /var/log/messages like so

Code:

Jan 11 19:09:36 kg-starone kernel: ugen0.6: <vendor 0x0a12 USB2.0-BT> at usbus0
Jan 11 19:09:36 kg-starone kernel: ubt0 on uhub1
Jan 11 19:09:36 kg-starone kernel: ubt0: <vendor 0x0a12 USB2.0-BT, class 224/1, rev 1.10/88.91, addr 5> on usbus0
Jan 11 19:09:37 kg-starone root[3703]: /etc/rc.d/bluetooth: ERROR: Unable to setup Bluetooth stack for device ubt0

usbconfig shows

Code:

root@kg-starone:~ # usbconfig -d ugen0.6 dump_device_desc
ugen0.6: <Bluetooth Dongle (HCI mode) Cambridge Silicon Radio, Ltd> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)

  bLength = 0x0012
  bDescriptorType = 0x0001
  bcdUSB = 0x0110
  bDeviceClass = 0x00e0  <Wireless controller>
  bDeviceSubClass = 0x0001
  bDeviceProtocol = 0x0001
  bMaxPacketSize0 = 0x0040
  idVendor = 0x0a12
  idProduct = 0x0001
  bcdDevice = 0x8891
  iManufacturer = 0x0000  <no string>
  iProduct = 0x0002  <USB2.0-BT>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001

usbconfig - configuration

Code:

root@kg-starone:~ # usbconfig -d ugen0.6 dump_curr_config_desc
ugen0.6: <Bluetooth Dongle (HCI mode) Cambridge Silicon Radio, Ltd> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)


 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x00c8 
    bNumInterfaces = 0x0002 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x00c0 
    bMaxPower = 0x0032 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0003 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0010 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0004  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 2
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0001 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0009 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0009 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 2
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0002 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0011 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0011 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 3
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0003 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0019 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0019 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 4
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0004 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0021 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0021 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 5
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0005 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0031 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0031 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1 Alt 6
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0005 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00e0  <Wireless controller>
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0001 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <OUT>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x003f 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x003f 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000

LibreQuest · Jan 12, 2025

You could contact a donation liaison and see if they would be interested in the device for developing a working driver.

non-working bluetooth dongle - Dezen DZ-BTUAV5

tingo

tingo

LibreQuest