Bluetooth headphones mistaken for a keyboard!?!
I took delivery of a very nice pair of Bang & Olufsen BeoPlay H8
bluetooth headphones yesterday. I've verified they work properly by
connecting them to my iPhone.
When I try to connect them to my PC, I am not having so much luck. PC is
a 7-year-old self-built desktop box running Jessie with Gnome as the DE,
with Intel Core i7-920 CPU and 24GB RAM. Bluetooth capability comes from
a rather younger (bought about 6 months ago) bluetooth USB dongle which
I routinely use to connect my iPhone and Android tablets to the computer
to play audio from them through the computer's speakers. So I know it
works fine too.
Turning on bluetooth from the gnome applet, and putting the headphones
into pairing mode, the computer quickly finds the headphones. When I ask
the computer to connect it quickly does so, apparently successfully, and
I hear the tones in the headphones indicating they too know they are
connected. But, pulseaudio doesn't recognise a new audio sink has been
installed -- and I don't blame it, because of the below.
Looking in the Gnome Log Viewer in messages, at the moment of connecting
the headphones, I see this:
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (II) config/udev: Adding input
device 00:09:A7:09:BE:22 (/dev/input/event17)
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) 00:09:A7:09:BE:22:
Applying InputClass "evdev keyboard catchall"
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (II) Using input driver
'evdev' for '00:09:A7:09:BE:22'
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) 00:09:A7:09:BE:22: always
reports core events
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) evdev: 00:09:A7:09:BE:22:
Device: "/dev/input/event17"
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (--) evdev: 00:09:A7:09:BE:22:
Vendor 0 Product 0
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (--) evdev: 00:09:A7:09:BE:22:
Found keys
Mar 4 08:07:17 kazuki kernel: [382097.651490] input: 00:09:A7:09:BE:22
as /devices/virtual/input/input30
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (II) evdev: 00:09:A7:09:BE:22:
Configuring as keyboard
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) Option "config_info"
"udev:/sys/devices/virtual/input/input30/event17"
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (II) XINPUT: Adding extended
input device "00:09:A7:09:BE:22" (type: KEYBOARD, id 13)
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) Option "xkb_rules"
"evdev"
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) Option "xkb_model"
"pc105"
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) Option "xkb_layout"
"jp,us"
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) Option "xkb_variant" ","
Mar 4 08:07:17 kazuki gdm-Xorg-:0[1040]: (**) Option "xkb_options"
"grp:alt_shift_toggle,grp_led:scroll"
That doesn't look healthy. First of all it is detecting an INPUT device,
presumably the headphone controls for volume and so on, and no OUTPUT
device. Second, it seems to think that what it has found is a keyboard.
Pulseaudio can, it seems to me, be excused for thinking a keyboard has
been added and not being accustomed to playing sound through a
keyboard... :-)
I'm thinking this could be a udev problem of some kind -- perhaps I am
missing appropriate udev rules? I am not sure how to diagnose the
problem from here, far less fix it, so any advice would be appreciated.
Google has, unusually, turned up zilch.
Thanks in advance
Mark
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