KDE Bluetooth problem

[Richard Z]

Hi,

until recently I was easily able to send regular audio output to my BTH12 headset,
which stopped working sometime around or shortly after the 2013/2014 break.

The BT applet in the tray shows it is connected to the headset, the headset beeps
as connected but sound goes to regular loudspeakers only. Headset also beeps when
I disconnect using the applet.

>From the syslog I am not sure where the problem is, some error messages are from
bluetoothd, another from pulseaudio and kernel.

# hciconfig hci0 up
has the effect that "Bluetooth: hci0 command 0x0407 tx timeout" appears in syslog
and some delay.

# hciconfig -a
hci0:   Type: BR/EDR  Bus: USB
        BD Address: 00:11:67:BF:CE:C5  ACL MTU: 1021:4  SCO MTU: 48:10
        UP RUNNING PSCAN ISCAN 
        RX bytes:1475 acl:22 sco:0 events:61 errors:0
        TX bytes:1048 acl:27 sco:0 commands:27 errors:0
        Features: 0xff 0xfe 0xff 0x7e 0x98 0x19 0x00 0x80
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
        Link policy: RSWITCH HOLD SNIFF 
        Link mode: SLAVE ACCEPT 
        Name: 'localhost.localdomain-0'
        Class: 0x7c0100
        Service Classes: Rendering, Capturing, Object Transfer, Audio, Telephony
        Device Class: Computer, Uncategorized
        HCI Version: 2.0 (0x3)  Revision: 0x302
        LMP Version: 2.0 (0x3)  Subversion: 0x302
        Manufacturer: Integrated System Solution Corp. (57)


Feb 17 12:54:30 localhost kernel: [49013.631046] usb 4-1: new full-speed USB device number 2 using uhci_hcd
Feb 17 12:54:30 localhost kernel: [49013.800075] usb 4-1: New USB device found, idVendor=1131, idProduct=1004
Feb 17 12:54:30 localhost kernel: [49013.800084] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Feb 17 12:54:30 localhost kernel: [49013.800089] usb 4-1: Product: ISSCEDRBTA
Feb 17 12:54:30 localhost kernel: [49013.800093] usb 4-1: Manufacturer: ISSC
Feb 17 12:54:31 localhost kernel: [49014.098267] usbcore: registered new interface driver btusb
Feb 17 12:54:31 localhost systemd[1]: Starting Bluetooth.
Feb 17 12:54:31 localhost systemd[1]: Reached target Bluetooth.
Feb 17 12:54:31 localhost bluetoothd[1239]: bluetoothd[1239]: Parsing /etc/bluetooth/serial.conf failed: No such file or directory
Feb 17 12:54:31 localhost bluetoothd[1239]: Parsing /etc/bluetooth/serial.conf failed: No such file or directory
Feb 17 12:54:31 localhost kernel: [49014.751128] Bluetooth: RFCOMM TTY layer initialized
Feb 17 12:54:31 localhost kernel: [49014.751154] Bluetooth: RFCOMM socket layer initialized
Feb 17 12:54:31 localhost kernel: [49014.751156] Bluetooth: RFCOMM ver 1.11
Feb 17 12:54:32 localhost bluetoothd[1239]: bluetoothd[1239]: Unknown command complete for opcode 19
Feb 17 12:54:32 localhost bluetoothd[1239]: Unknown command complete for opcode 19
Feb 17 12:54:32 localhost bluetoothd[1239]: bluetoothd[1239]: Adapter /org/bluez/1239/hci0 has been enabled
Feb 17 12:54:32 localhost bluetoothd[1239]: Adapter /org/bluez/1239/hci0 has been enabled
Feb 17 12:54:32 localhost bluetoothd[1239]: bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/HFPAG
Feb 17 12:54:32 localhost bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/HFPAG
Feb 17 12:54:32 localhost bluetoothd[1239]: bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/HFPHS
Feb 17 12:54:32 localhost bluetoothd[1239]: bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/A2DPSource
Feb 17 12:54:32 localhost bluetoothd[1239]: bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/A2DPSink
Feb 17 12:54:32 localhost bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/HFPHS
Feb 17 12:54:32 localhost bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/A2DPSource
Feb 17 12:54:32 localhost bluetoothd[1239]: Endpoint registered: sender=:1.38 path=/MediaEndpoint/A2DPSink
Feb 17 12:55:13 localhost kernel: [49056.655017] Bluetooth: hci0 command 0x0407 tx timeout
Feb 17 12:55:36 localhost pulseaudio[2223]: [pulseaudio] module-bluetooth-device.c: Failed to acquire transport /org/bluez/1239/hci0/dev_00_1A_7D_16_77_28/fd0
Feb 17 12:55:51 localhost bluetoothd[1239]: bluetoothd[1239]: HUP or ERR on socket
Feb 17 12:55:51 localhost bluetoothd[1239]: HUP or ERR on socket


Thanks for any insight.

Richard

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