[pulseaudio-discuss] how to troubleshoot bluetooth audio issues?

Oleksij Rempel bug-track at fisher-privat.net
Tue Oct 16 08:27:49 PDT 2012

Hi Tanu,

are there any way to make minimal sound level more silent for bluetooth
headset? I mean HSP profile. If i understand correctly, pulse
responsible for it, not hardware.

(ps: resend. from correct email)

> Am 14.10.2012 19:24, schrieb Oleksij Rempel:
>> Am 14.10.2012 17:59, schrieb Tanu Kaskinen:
>>> On Sun, 2012-10-14 at 17:29 +0200, Oleksij Rempel wrote:
>>>> Hallo all, (Pulseaudio and Bluetooth devs)
>>>> i have Samsung HS3000 bluetooth headset. Mostly it works but there are
>>>> different issue with it:
>>>> - volume level seems to be set to max (at really uncomfortable level)
>>>> - at the moment i trying to change volume with pavucontrol or after
>>>> it i
>>>> get bad sound. Some times sort of cracky or trashy sound, some times
>>>> just white noise.
>>>> - play/stop key do not works with linux (not pulse issue)
>>>> how to troubleshoot this issues? what tools should i use and where
>>>> should it start?
>>> Regarding the broken audio: I would suspect that the headset is buggy,
>> hehe, nice try :) This headset works perfectly with my
>> smartphone/cyanogenmod.
>>> because the volume handling code should be pretty well tested in
>>> pulseaudio,  and I don't think bluetoothd touches the audio signal at
>>> all. To confirm that, I think it's somehow possible to capture the audio
>>> that is sent to the headset, but I don't know how. Maybe the bluez
>>> people can answer that (I'm a pulseaudio guy myself).
>>> Are you using the headset in the HSP or A2DP mode, btw? If A2DP, then
>>> that would suggest a pulseaudio bug, since I don't think the headset
>>> will get any notification via A2DP when you change the volume in
>>> pavucontrol.
>> You right, i played with different profiles. HSP controls volume on
>> pulse, but minimal volume is still too loud. A2DP use internal volume
>> control and i can set it as silent as i need.
>> I made some more tests with different kernels. It looks more like kernel
>> issue. I get different oopses and it looks like 3.5.0 sounds better then
>> current master git.


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