Bluetooth audiostream is choppy when WLAN is on

Tracked by Jolla

asked 2017-10-17 22:19:32 +0300

2218 ●39 ●55 ●54

updated 2019-05-06 11:16:51 +0300

When listening to music in my car (Xperia connected via bluetooth to Renault Radiosat) the audiostream is interrupted every approximatly 5sec when WLAN is on. As soon as I turn off WLAN, the stream is ok.

UPDATE: still present on 2.1.4.14 and 2.2.0.29

EDIT2: still present on 2.2.1.18

EDIT4: still present on 3.0.3.8 although the behaviour changed. The hickups appear now about once a minute. (sometimes within 10 seconds, sometimes more than one minute. I counted 34 hickups during 32 min driving. :) )

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2

I got the same but choppiness diappears after 10 or so seconds on mine.

XFish ( 2017-10-18 04:37:52 +0300 )edit

1

Yeah the line discipline isn't particularly great yet, the wifi and the bt are run off the same chip

r0kk3rz ( 2017-10-18 10:56:29 +0300 )edit

1

Hi @r0kk3rz , a related question: Did you recognize a difference in sound quality of the bt audio stream after the switch from bluez4 to bluez5?

michfu ( 2017-10-18 11:01:06 +0300 )edit

1

Same problem for me but I didn't try with the wlan off. The audio stream does have hiccups while listening to music but not during a phone call. That's strange.

Toniob ( 2017-10-18 11:33:38 +0300 )edit

2

Strange... I can't get audio out via Bluetooth at all... Will test this after reboot.

Direc ( 2017-10-18 14:31:07 +0300 )edit

0

answered 2018-11-10 14:31:57 +0300

kumottolo
31 ●3 ●3

hello,

i had the same issue with Xperia X and SF 3.0.

I realised it was due to the Bluetooth settings that kept searching for devices even after it paired with the bluetooth speaker. i fixed it by, while in the bluetooth setting page, sliding down and selecting "stop searching". it immediately solved the audio stuttering problem (enabling/disabling WLan does not affect it in my case).

best

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Hey, I also tested this, and I found that sometimes audio streaming stuttering but it's just only few "peaks" per 5 minutes or something. I also noticed that if I navigating in sailfish and do some basic things, there is more often this audio choppiness.

And of course both cases I have enabled wlan and also connected my home network.

So afterall this is issue even when using just bluetooth speakers with xperia x

Jk ( 2018-11-10 20:04:57 +0300 )edit

hello,

after further testing I have been experiencing exactly the same as you (stuttering every now and then, especially if navigating). It is not too bad, but annoying at times.

best

kumottolo ( 2018-11-11 13:21:05 +0300 )edit

0

answered 2019-02-17 14:41:36 +0300

mase
41 ●4 ●11 ●13

Disabling Wifi made it somewhat better. But the choppiness every few minutes is very annoying. This makes no fun listening to music. Even annoying when listening to speech. I hope, Jolla will fix this very soon. Is there a better way to log? I want to find out, what happens when stuttering. journalctl -f only tells me, that some audio frames were skipped.

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The stuttering sound when wifi is deactivated appears exactly every 3 minutes. Neither dbus-monitor nor journalctl -f shows something in this moment. I tried high-priority = yes and nice-level = -1 in /etc/pulse/daemon.conf. But this had no effect. How can I figure out, what happens every 3 mins?

mase ( 2019-02-19 08:49:30 +0300 )edit

It might be a bug in the Android binary blobs. As Bluetooth and WLAN 2.4GHz use the same frequencies, they must take turns, stop and go, and the (lack of) co-operation is what causes the stutter. There is little that can be done on the Sailfish end of the court. Let's hope the next release uses newer firmware blobs...

Direc ( 2019-02-20 23:30:51 +0300 )edit

Maybe, but Wifi is deactivated. So it should not affect bluetooth.

mase ( 2019-02-21 20:09:27 +0300 )edit

0

answered 2019-05-03 01:04:41 +0300

GD

1395 ●25 ●42 ●44

As of release 3.0.3.8 I have not had any pauses with Bluetooth audio, the only issue I notice now is when first playing audio over Bluetooth, is the audio rate fluctuates mildly for the first approximately minute. then it settles down playing at ghe correct rate.

I believe it the update of pulseaudio to 12.2 that fixed it.

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You have no issues on Xperia X? Here the situation hasn't changed. It's not as often as in the beginning but still present.

michfu ( 2019-05-03 19:26:59 +0300 )edit

Bluetooth audio works absolutely flawless on my Xperia X since a few updates (haven't tried 3.0.3 yet). On wifi it might help to switch to 5 GHz, on mobile data it might help to switch off wifi.

Olsen ( 2019-05-04 00:37:36 +0300 )edit

I still cannot stream music via bluetooth on my Jolla1 sfos 3.0.3.8 (Hossa).

Spam Hunter ( 2019-05-06 11:22:06 +0300 )edit

Looks like I need to test My X and Jolla1 My XA2 Seams to work nicely though.

GD ( 2019-05-07 08:38:06 +0300 )edit

0

answered 2019-05-03 12:03:58 +0300

mase
41 ●4 ●11 ●13

I noticed, the periodic stuttering every 3 minutes is caused by the Situations app from the Jolla store, when bt connectivity checks are configured.

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