Bluetooth headphones went from working fine to not even pairing

[tckosvic]

No changes intentionally made to any audio element My Grado Lab wireless headphones went from working fine and now won’t even pair/connect.
Output sound is working well in a separate pair of wired headphones.
Wireless headphones connect to android phone and play fine; eliminating hardware problem with headphones. Problem seems to be solely a bluetooth issue.

Phones now fail to pair. I have removed and reinstalled all bluetooth software. Have rebooted pc several times. The wireless headphones are not found in pauvucontrol output anymore where they used to be seen.

I do get error message below from system log.

2024-10-16T19:58:19.800151-05:00 mydesktop bluetoothd[1412]: src/profile.c:record_cb() Unable to get Hands-Free Voice gateway SDP record: Host is down
2024-10-16T19:58:19.845972-05:00 mydesktop blueman-manager[5601]: blueman-manager 19.58.19 WARNING  ManagerDeviceMenu:145 fail      : fail g-dbus-error-quark: GDBus.Error:org.freedesktop.DBus.Error.Failed: blueman.bluez.errors.DBusFailedError:  br-connection-page-timeout
2024-10-16T19:58:19.879026-05:00 mydesktop blueman-manager[5601]:  (0)
2024-10-16T19:58:23.706204-05:00 mydesktop systemd[3264]: blueman-manager.service: Consumed 4.986s CPU time.

I have no idea how SDP is related to bluetoot but host is down. Also there is a dbus error from blueman that I also have no idea how to diagnose.

Any insights please. thanks, tom kosvic

[tckosvic]

Additionally, see the following additional diagnostic info.

(base) tom@mydesktop: ~ $ sudo systemctl status bluetooth
[sudo] password for root: 
● bluetooth.service - Bluetooth service
     Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; preset: disabled)
     Active: active (running) since Wed 2024-10-16 19:33:19 CDT; 2h 24min ago
       Docs: man:bluetoothd(8)
   Main PID: 1412 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 4915)
        CPU: 424ms
     CGroup: /system.slice/bluetooth.service
             └─1412 /usr/lib/bluetooth/bluetoothd

Oct 16 19:34:21 mydesktop bluetoothd[1412]: Endpoint registered: sender=:1.71 path=/MediaEndpoint/A2DPSource/faststream
Oct 16 19:34:21 mydesktop bluetoothd[1412]: Endpoint registered: sender=:1.71 path=/MediaEndpoint/A2DPSource/faststream_duplex
Oct 16 19:34:21 mydesktop bluetoothd[1412]: Endpoint registered: sender=:1.71 path=/MediaEndpoint/A2DPSink/opus_05
Oct 16 19:34:21 mydesktop bluetoothd[1412]: Endpoint registered: sender=:1.71 path=/MediaEndpoint/A2DPSource/opus_05
Oct 16 19:34:21 mydesktop bluetoothd[1412]: Endpoint registered: sender=:1.71 path=/MediaEndpoint/A2DPSink/opus_05_duplex
Oct 16 19:34:21 mydesktop bluetoothd[1412]: Endpoint registered: sender=:1.71 path=/MediaEndpoint/A2DPSource/opus_05_duplex
Oct 16 19:36:29 mydesktop bluetoothd[1412]: src/profile.c:record_cb() Unable to get Hands-Free Voice gateway SDP record: Input/output error
Oct 16 19:37:09 mydesktop bluetoothd[1412]: profiles/audio/avdtp.c:avdtp_connect_cb() connect to 5C:EB:68:99:C5:7F: Connection refused (111)
Oct 16 19:37:52 mydesktop bluetoothd[1412]: profiles/audio/avdtp.c:avdtp_connect_cb() connect to 5C:EB:68:99:C5:7F: Connection refused (111)
Oct 16 19:58:19 mydesktop bluetoothd[1412]: src/profile.c:record_cb() Unable to get Hands-Free Voice gateway SDP record: Host is down
(base) tom@mydesktop: ~ $ 

[marel]

Does bluetoothctl devices show the problematic headset?

[tckosvic]

Yes, bluetoothctl shows grado gw100. Also some old cell phones.
But also throws seg fault; see below. What is the agent that is not registered?

(base) tom@mydesktop: ~ $ bluetoothctl devices
Device 5C:EB:68:99:C5:7F Grado GW100
Device 00:E0:4C:23:99:87 manjaro-arm
Device 14:13:33:0F:28:24 manjaro-arm
Device E0:98:61:BD:BD:2A MotoG3
[DEL] Media /org/bluez/hci0 
        SupportedUUIDs: 0000110a-0000-1000-8000-00805f9b34fb
        SupportedUUIDs: 0000110b-0000-1000-8000-00805f9b34fb
No agent is registered
[DEL] Controller 80:A5:89:16:E1:8E mydesktop [default]
Segmentation fault (core dumped)
(base) tom@mydesktop: ~ $ 

[tckosvic]

I did forced re-install of alsa, pipewire, wireplumber, and bluez that has not changed anything.

Sound still works through wired headphones with no issues.

I disconnect wired headphones while trying to connect bluetooth headphones jusi in case you cannot use these together.

[marel]

bluetoothctl crashing is bad and warrants I think a bugreport.

[tckosvic]

I did submit bug report. Bug 1231807

tom kosvic

[tckosvic]

Some additional info:
I also logged into other desktops (gnome and plasma) and my bluetooth headphones do not work in those either. These used to run my bluetooth headphones. Thus, I don’t think my mate default desktop software is a cause of the issue.

I also do not have bluetooth headphones running in various libvirt vms like rocky linux. linuxmint, and arch linux where it used to function.

[tckosvic]

Solved – complete power-off reboot with removal of power plug for more than 30 seconds got headphone working again.

After 2 weeks trying everything I could find on this; re-installing software multiple times, a dozen restarts and even power-off restarts nothing worked. I saw a comment on a forum that said they solved it with a power-off followed by plug removal for more than 30 seconds was needed so that the system would re-read bluetooth firmware. I tried it and it is working just like it used to.

The headphones also again show up in pavucontrol, where this had stopped when the non-connect issue started.

Not sure what was fixed but bluetooth headphones are now working.

thanks, tom kosvic