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#1 2020-07-03 14:00:50

r-giskard-reventlov
Member
Registered: 2020-03-25
Posts: 4

AKG Y50 Bluetooth headphones registered as keyboard?

Hi,

I've got a pair of AKG Y50 headphones which work intermittently on my machine, just now their not! Here's the log I can see from from systemd journal:

Jul 03 14:57:53 trantor bluetoothd[678]: /org/bluez/hci0/dev_34_DF_2A_51_0C_B9/sep1/fd7: fd(46) ready
Jul 03 14:57:53 trantor rtkit-daemon[1288]: Supervising 13 threads of 9 processes of 2 users.
Jul 03 14:57:53 trantor rtkit-daemon[1288]: Successfully made thread 80074 of process 1185 owned by '120' RT at priority 5.
Jul 03 14:57:53 trantor rtkit-daemon[1288]: Supervising 14 threads of 9 processes of 2 users.
Jul 03 14:57:54 trantor kernel: input: AKG Y50BT (AVRCP) as /devices/virtual/input/input40
Jul 03 14:57:54 trantor systemd-logind[682]: Watching system buttons on /dev/input/event25 (AKG Y50BT (AVRCP))
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[886]: (II) config/udev: Adding input device AKG Y50BT (AVRCP) (/dev/input/event25)
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[886]: (**) AKG Y50BT (AVRCP): Applying InputClass "libinput keyboard catchall"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[886]: (**) AKG Y50BT (AVRCP): Applying InputClass "system-keyboard"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[886]: (II) Using input driver 'libinput' for 'AKG Y50BT (AVRCP)'
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) config/udev: Adding input device AKG Y50BT (AVRCP) (/dev/input/event25)
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) AKG Y50BT (AVRCP): Applying InputClass "libinput keyboard catchall"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) AKG Y50BT (AVRCP): Applying InputClass "system-keyboard"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) Using input driver 'libinput' for 'AKG Y50BT (AVRCP)'
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) systemd-logind: got fd for /dev/input/event25 13:89 fd 66 paused 0
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) AKG Y50BT (AVRCP): always reports core events
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) Option "Device" "/dev/input/event25"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) Option "_source" "server/udev"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[886]: (II) systemd-logind: got fd for /dev/input/event25 13:89 fd 25 paused 1
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[886]: (II) systemd-logind: releasing fd for 13:89
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) event25 - AKG Y50BT (AVRCP): is tagged by udev as: Keyboard
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) event25 - AKG Y50BT (AVRCP): device is a keyboard
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) event25 - AKG Y50BT (AVRCP): device removed
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) Option "config_info" "udev:/sys/devices/virtual/input/input40/event25"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) XINPUT: Adding extended input device "AKG Y50BT (AVRCP)" (type: KEYBOARD, id 19)
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) Option "xkb_layout" "gb"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (**) Option "xkb_variant" "extd"
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) event25 - AKG Y50BT (AVRCP): is tagged by udev as: Keyboard
Jul 03 14:57:54 trantor /usr/lib/gdm-x-session[1417]: (II) event25 - AKG Y50BT (AVRCP): device is a keyboard

Seems to me like the headphones are being registered as a keyboard, which would explain why they don't appear in the
Gnome settings panel under output devices!

Can anybody help?

Last edited by r-giskard-reventlov (2020-07-04 10:24:03)

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#2 2020-07-03 14:11:37

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 10,508

Re: AKG Y50 Bluetooth headphones registered as keyboard?

Please wrap outputs in [ code ] [ /code ] tags without the spaces.

Every device that has any kind of button gets registered as a keyboard in xorg, this makes no statement at how available it should be for other purposes. This needs more logs either from kernel/bluetoothd and/or pulseaudio. Have you read https://wiki.archlinux.org/index.php/Bluetooth_headset and particularly: https://wiki.archlinux.org/index.php/Bl … e_with_GDM  ?

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