[pulseaudio-tickets] [Bug 99222] ouput sound is not switched automatically to bluetooth headset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99222

--- Comment #4 from Christian Kellner <gicmo at gnome.org> ---
Thanks Tanu for the feedback, I looked at pa_device_init_priority() and indeed
it seems that the priorities listed there are almost inverted to what I would
think makes sense (I am curious what the initial reasoning was for that). I did
create a patch for it, tested it and it seems that this did indeed change the
priorities for the internal sound device ("<alsa_card.pci-0000_00_1f.3>") but
not for the bluetooth one ("bluez_card.04_52_C7_60_XX_XX>"). For the latter the
port priority stayed at '20' [a2dp_sink: High Fidelity Playback (A2DP Sink)
(priority 10, available: unknown)]. So after poking at the source for a while I
think the priority is hardcoded at
src/modules/bluetooth/module-bluez5-device.c:1808 (for A2DP source). For fun
and testing I cranked that value up to 100k and it did indeed select the
bluetooth headphones. It seems that the bluetooth module itself just sets the
prio for its ports to a low value as 20?!

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