Bluetooth and my Kubuntu 24.04.1 installation don't seem to get along.  
I have one of those bluetooth stereo speaker boxes that I use with the 
system sometimes.  It can be used as a speaker that works with a phone, 
or with the computer or phone.   The problem is that when I boot the 
machine and try to connect to those speakers, it connects using one of 
the codecs that's meant to be used with a phone.  In that mode, the 
sound is mono and sounds like it's being played back over a phone.  
Obviously not desirable for listening to music.  When I open 
blueman-manager, the following audio profiles are available:

off
headset head unit (HSP/HFP)
Headset Head Unit (HSP/HFP, codec CVSD)
Headset Head Unit (HSP/HFP, codec mSBC)

After I go through the procedure I've worked out, it connects in high 
fidelity mode with the following options available under audio profile 
in blueman-manager.  The X is next to the one it's using.

   off
   headset head unit (HSP/HFP)
   High Fidelity Playback (A2DP Sink Codec SBC)
X High Fidelity Playback (A2DP Sink Codec SBC SBC-XQ)
   Headset Head Unit (HSP/HFP, codec CVSD)
   Headset Head Unit (HSP/HFP, codec mSBC)

Here's what I have to do to use the high fidelity mode.

Unplug the bluetooth dongle
Restart bluetooth
Plug in dongle
Launch blueman manager then search for speaker, then connect to it.

The problem isn't limited to one bluetooth dongle or the speakers I 
have.  I've used other bluetooth dongles and other speakers but the 
problem still persists.

Here's what hciconfig shows.

hci0:   Type: Primary  Bus: USB
         BD Address: 08:BE:AC:32:79:8D  ACL MTU: 1021:6  SCO MTU: 255:12
         UP RUNNING
         RX bytes:911592 acl:194 sco:0 events:128617 errors:0
         TX bytes:65920621 acl:125374 sco:0 commands:3234 errors:0
         Features: 0xff 0xff 0xff 0xfe 0xdb 0xfd 0x7b 0x87
         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
         Link policy: RSWITCH HOLD SNIFF PARK
         Link mode: PERIPHERAL ACCEPT
         Name: 'ladmo'
         Class: 0x7c0104
         Service Classes: Rendering, Capturing, Object Transfer, Audio, 
Telephony
         Device Class: Computer, Desktop workstation
         HCI Version: 5.1 (0xa)  Revision: 0xdfc6
         LMP Version: 5.1 (0xa)  Subversion: 0xd922
         Manufacturer: Realtek Semiconductor Corporation (93)

Is  there some way I can fix this.  If I can't get this fixed, 
eventually I'll get an FM transmitter good for covering the yard, plug 
it into the system and take a radio outside.


Thanks to anyone that can help me get this fixed.

Jim


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