[pulseaudio-discuss] [PATCH v9 0/8] Bluetooth A2DP codecs

Luiz Augusto von Dentz luiz.dentz at gmail.com
Thu Apr 25 11:42:35 UTC 2019

Hi Pali,

On Thu, Apr 25, 2019 at 2:35 PM Pali Rohár <pali.rohar at gmail.com> wrote:
> On Thursday 25 April 2019 13:28:16 Pali Rohár wrote:
> > On Thursday 25 April 2019 14:19:15 Luiz Augusto von Dentz wrote:
> > > These seems to work great, I can even switch on the fly the profiles
> > > and after a short delay it switches without a problem, there is one
> > > issue related to reconnecting though:
> > >
> > > https://gist.github.com/Vudentz/40f10e85fb860083958edae67093f016
> > >
> > > With BlueZ remembering the last used endpoint (aptX) it seems the
> > > policy ignores that and reverts to highest priority (SBC UHQ),
> Relevant lines:
> D: [lt-pulseaudio] bluez5-util.c: Transport /org/bluez/hci0/dev_94_20_53_2E_08_CE/sep5/fd26 available for profile a2dp_sink_aptx
> ...
> D: [lt-pulseaudio] card.c: a2dp_sink_aptx availability unknown
> ...
> D: [lt-pulseaudio] card.c: off availability yes
> I: [lt-pulseaudio] card.c: bluez_card.94_20_53_2E_08_CE: active_profile: a2dp_sink_sbc_uhq2
> D: [lt-pulseaudio] module-bluetooth-policy.c: Looking for A2DP profile activated by bluez for card bluez_card.94_20_53_2E_08_CE
> I: [lt-pulseaudio] card.c: Created 5 "bluez_card.94_20_53_2E_08_CE"
> We got information that sep5 is activated with fd26 and it corespondent
> to profile a2dp_sink_aptx. And on next lines we see that profile has
> unknown availability -- which means that it is possible to switch to
> that codec/profile, but it is not activated yet. On next lines we see
> that module-bluetooth-policy is trying to find "a2dp_*" which has
> availability "on", but there is no one. So initial profile stay
> a2dp_sink_sbc_uhq2 which was chosen as default by card.c.
> So problem is why a2dp_sink_aptx profile has unknown availability even
> it is activated? It should have "on" availability. And then policy
> choose it as initial.

Right, looks like the state is not correct since it has a fd already
it should have been marked available.

Luiz Augusto von Dentz

More information about the pulseaudio-discuss mailing list