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The original was posted on /r/debian by /u/AvnarJakob on 2023-08-06 16:01:17+00:00.

I switched to Debian 12 KDE and now my MPOW BH456A Adapter isnt working. It used to work on Fedora 37.

The service is running but there are errors:

sudo service bluetooth status 
● bluetooth.service - Bluetooth service     
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; preset: enabled)     Active: active (running) since Sun 2023-08-06 17:38:11 CEST; 13min ago       Docs: man:bluetoothd(8)   Main PID: 1099 (bluetoothd)     Status: "Running"      Tasks: 1 (limit: 19022)     Memory: 2.3M        CPU: 30ms     
CGroup: /system.slice/bluetooth.service             
        └─1099 /usr/libexec/bluetooth/bluetoothd

Aug 06 17:38:11 debian bluetoothd[1099]: Bluetooth daemon 5.66
Aug 06 17:38:11 debian systemd[1]: Started bluetooth.service - Bluetooth service.
Aug 06 17:38:11 debian bluetoothd[1099]: Starting SDP server Aug 06 17:38:11 debian bluetoothd[1099]: profiles/audio/vcp.c:vcp_init() D-Bus experimental not enabled Aug 06 17:38:11 debian bluetoothd[1099]: src/plugin.c:plugin_init() Failed to init vcp plugin Aug 06 17:38:11 debian bluetoothd[1099]: profiles/audio/mcp.c:mcp_init() D-Bus experimental not enabled Aug 06 17:38:11 debian bluetoothd[1099]: src/plugin.c:plugin_init() Failed to init mcp plugin Aug 06 17:38:11 debian bluetoothd[1099]: profiles/audio/bap.c:bap_init() D-Bus experimental not enabled Aug 06 17:38:11 debian bluetoothd[1099]: src/plugin.c:plugin_init() Failed to init bap plugin Aug 06 17:38:11 debian bluetoothd[1099]: Bluetooth management interface 1.22 initialized

dmesg also throws error when connecting the USB:

[  902.422817] usb 1-7: new full-speed USB device number 5 using xhci_hcd 
[  902.670405] usb 1-7: New USB device found, idVendor=0bda, idProduct=8771, bcdDevice= 2.00 
[  902.670413] usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [  902.670418] usb 1-7: Product: Bluetooth Radio [  902.670421] usb 1-7: Manufacturer: Realtek 
[  902.670425] usb 1-7: SerialNumber: 00E04C239987 
[  902.670593] ACPI Error: Aborting method _SB.PCI0.GPP2.PTXH.RHUB.PO11._PLD due to previous error (AE_AML_UNINITIALIZED_ELEMENT) (20220331/psparse-529) 
[  902.686279] ACPI Error: Aborting method _SB.PCI0.GPP2.PTXH.RHUB.PO11._PLD due to previous error (AE_AML_UNINITIALIZED_ELEMENT) (20220331/psparse-529) 
[  902.689327] ACPI Error: Aborting method _SB.PCI0.GPP2.PTXH.RHUB.PO11._PLD due to previous error (AE_AML_UNINITIALIZED_ELEMENT) (20220331/psparse-529)

I tryed installing this Driver from their Website but the Readme said that supported kernel version is 2.6.32 - 5.7.1 and installing it failed.