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Having Bluetooth "Handsfree" and A2DP connected at same time causing severe skipping

Having Bluetooth "Handsfree" and A2DP connected at same time causing severe skipping
Hi....I know there are a lot of posts regarding skipping while playing MP3s over A2DP. My problem is perhaps a little bit different because I've narrowed my problem down to the handsfree bluetooth service.
Here's my situation with my unlocked HTC TyTN II using the stock HTC ROM and with no registiry modifications (bitpool, etc)
If I have only A2DP connected and streaming music to an external bluetooth receiver the MP3 playback is flawless. It sounds fantastic. I've tried Windows Media Player, PocketMusic, and PocketPlayer and they all work just great.
However, when I turn on my handsfree headset (which is a separate device from my A2DP receiver) and allow it to connect to my TyTN II, extreme stuttering immediately occurs through the A2DP music stream. When I shut off my handsfree headset the stuttering stops and the music stream returns to its usual fantastic sound. The problem can be replicated also by leaving the handsfree headset powered ON and simply enabling handsfree service on the HTC TyTN II to cause the stuttering to begin. The stuttering stops immediately when handsfree service is subsequently disabled.
Anyone else out their experience this? Any suggestions? For the time being I have to resort to disabling handsfree when streaming music to my A2DP bluetooth receiver.

Skipping/Cutting out/Speeding Up/Slowing down
Not much to add other than 'Me Too!' and thanks for tracking this down since i thought i was going nuts since I've had a couple of times where i thought i had it resolved only for it to crop up again.
Are you also experiencing your A2DP audio speeding up and slowing down along with the audio cutting out? since to me that is the most bizarre of all of the audio freakery going on.
I found my Logitech handsfree less likely to cause cut outs when on than my Jawbone does. but neither were trouble free.

Just an update for those that may experience the same problem as me. I've noticed that sometimes I have perfect audio even though I am connected to my handsfree car system while streaming music via A2DP. So this leads me to believe that bitpool settings and such are not the issue...since the perfect audio can occur with the default settings. I have also heard in other threads that flashing a new radio may help...but haven't gone to that measure yet.
What I have been able to determine is that this horrible skipping/stuttering occurs when my phone is changing cell phone towers.
That is, if
1) Streaming audio over bluetooth via A2DP
AND
2) Tytn II also connected to a handsfree device
then A2DP skips horribly when the phone needs to switch cell towers.
I have confirmed this by using the program PhoneAlarm to log the cell phone towers my phone is connected to. My A2DP stuttering/skipping problem coincides with every change in cell phone tower.
Now having said all this there is still one other factor that plays into it that I haven't quite figured out. If I soft reset my device and then immediately connect to my car and A2DP stereo then I do not get the stuttering problem when changing cell phone towers. However if I spend the day using the device, active-syncing and such at work, then on the drive home I will ALWAYS get the stuttering during every cell phone tower hand-over.
Frustrating. Anyway...hopefully I'll eventually figure out the last piece of the puzzle. I would rather not have to soft reset every time I get in my car just so that I can get good audio.
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hondophred said:
Are you also experiencing your A2DP audio speeding up and slowing down along with the audio cutting out? since to me that is the most bizarre of all of the audio freakery going on.
Click to expand...
Click to collapse
I do recall getting this behaviour when using Windows Media player...but I have started using the new Pocket Player and have since never experienced the audio slow down problem.

I found a work-around that works for me. It's posted here:
http://forum.xda-developers.com/showthread.php?p=1990783#post1990783

Yet another A2DP skipping problem
Rumball said:
I do recall getting this behaviour when using Windows Media player...but I have started using the new Pocket Player and have since never experienced the audio slow down problem.
Click to expand...
Click to collapse
I seem to have related but a different problem with skipping.
I have both Sony and goldlantern BT headphones which i tried (stereo profile).
Both severely skip audio when located on the left side of my belt. Silly but the reception/skipping problems improves a GREAT deal when i move it to the right side. It works flawlessly inside of the building where i have no phone signal but outside -- it skips horribly, even worse after 6.1rom upgrade.
Can anyone confirm that the BT signal going through the body worsens skipping? If so, I assume the signal strength/BT/wireless channel may be at fault, not the tower switching as for me, it happens even when I stay stationary.
Any help is GREATLY APPRECIATED!
TILT - R2 VEGA WM6.1 CE OS 5.2.19209 (Build 19209.1.0.2) ROM

I think part of the problem can be the A2DP device as well. I had a pair ofr HT 820 older bluetooth headsets with A2DP that were skipping and annoying. I went out and bought some s9s and the problem went away. I figured just for a test I would try the HT820 out again, still skipping. So for me it was not the phone but the A2DP device.

jallenclark said:
I think part of the problem can be the A2DP device as well. I had a pair ofr HT 820 older bluetooth headsets with A2DP that were skipping and annoying. I went out and bought some s9s and the problem went away. I figured just for a test I would try the HT820 out again, still skipping. So for me it was not the phone but the A2DP device.
Click to expand...
Click to collapse
i thought that too but i have two different headsets from two different manufacturers, both are skipping the same...

A2DP requires a lot of the bandwidth Bluetooth can provide. Having a 2nd connection open simply exceeds what the Bluetooth chip can handle, no surprise in that. If the BT headset keeps the connection open it's very likely to happen.

kilrah said:
A2DP requires a lot of the bandwidth Bluetooth can provide. Having a 2nd connection open simply exceeds what the Bluetooth chip can handle, no surprise in that. If the BT headset keeps the connection open it's very likely to happen.
Click to expand...
Click to collapse
what do you mean by a SECOND CONNECTION?
i have 2 different headsets because i thought that i have a poor headset, but both work similarly bad, which makes me think it is the tilt, not the headphones. i do not have 2 connections, never has it and not even sure if it is possible....
Lowering of bitrate did not help at all.....
Anyone have experienced these problems? anyone is using BT headset besides motorola s9?

On mine it does it when it picks up a wi-fi hotspot. When I'm driving the wi-fi is on when the screen is and whenever I pass a hot spot it drops out. Turning the wi-fi off solved it. Don't know if it does it with cell towers.

gs465 said:
what do you mean by a SECOND CONNECTION?
Click to expand...
Click to collapse
The thread was initially about skipping when BOTH an A2DP stereo headset AND a BT handsfree were connected at the same time, as the title shows. I was commenting on that.
Other than this, when I want to listen to music I can leave the Kaiser in my room and walk around in my entire flat with the headphones on without skipping (around 10-15m straight line, with some walls).
However, Wifi must not be active and communicating, otherwise either / both of them will drop. If I'm using Wifi and start streaming audio via A2DP, the wifi will slow down a lot and sometimes disconnect. In the same way if Wifi is communicating the audio will skip. If both of them are active but one is idle everything's fine. But that's also normal as both share the same frequencies and will step on each other. When usage is low it's not noticeable but when both are using a lot of bandwidth then they will disturb each other.
The cell radio doesn't seem to cause any problems for me.

Bluetooth Question

I have a question regarding bluetooth.
I have an sony HBH-DS980 that works great for music playback on my tytn ii.
The problem i have with it is that when the music is playing and a receive a phone call it notifies me and i answer the call. After the call is over the bluetooth link seems to drop and will no reconnect untill i turn the headset off and on.
Is there a way to make the headset go back to music playing and not drop link automatically?

linxus40 said:
I have a question regarding bluetooth.
I have an sony HBH-DS980 that works great for music playback on my tytn ii.
The problem i have with it is that when the music is playing and a receive a phone call it notifies me and i answer the call. After the call is over the bluetooth link seems to drop and will no reconnect untill i turn the headset off and on.
Is there a way to make the headset go back to music playing and not drop link automatically?
Click to expand...
Click to collapse
Not having experience of this unit this may be down to the individual headset and I hope some others will come in with experience of this.
Does the headset support both Headset and Wireless Stereo profile?
If it does not, the function may not be supported. I use a Promate PM-2600 and it supports both and when I have selected Wireless Stereo (this has to be done manually!) it works without problem when answering a call and passing back to music or video play.
Hope someone with information on this particular unit gets back to you.

linxus40 said:
I have a question regarding bluetooth.
I have an sony HBH-DS980 that works great for music playback on my tytn ii.
The problem i have with it is that when the music is playing and a receive a phone call it notifies me and i answer the call. After the call is over the bluetooth link seems to drop and will no reconnect untill i turn the headset off and on.
Click to expand...
Click to collapse
Hi,
I own a Sony HBH-DS980 too, and experiencing the same problem Linxus40's having, but on my 8925 Tilt, of which is essentially the same phone as Linxus40's HTC Tynii .
It's very frustrating having to reboot the HBH-DS980 & re-press the play button to re-establish the bt connection after completion of every incoming call. It's s my understanding that the Sony HBH-DS980 supports both wireless headset & the wireless stereo profile, as I've got no problem placing & receiving unlimited bt calls without disconnection when I'm not listening to music. This said, I find the HBH-DS980's bt audio 'sound quality' fantastic thru the 8925 Tilt.
btw: I've got PocketMusic 5 and PocketPlayer 3.51 on my Tilt, but experience significantly better sound (audio quality) when my music is played via PocketMusic compared to PocketPlayer. Curious if any body else here notices this too.
Ok, any other Sony HBH-DS908 bluetooth headset owners experiencing the dropped bluetooth connection problem Linuxus40 and I are experiencing? Any advice on how the problem can be corrected?
Thanks in advance.
Jazz

jazzman-t said:
Hi,
I own a Sony HBH-DS980 too, and experiencing the same problem Linxus40's having, but on my 8925 Tilt, of which is essentially the same phone as Linxus40's HTC Tynii .
It's very frustrating having to reboot the HBH-DS980 & re-press the play button to re-establish the bt connection after completion of every incoming call. It's s my understanding that the Sony HBH-DS980 supports both wireless headset & the wireless stereo profile, as I've got no problem placing & receiving unlimited bt calls without disconnection when I'm not listening to music. This said, I find the HBH-DS980's bt audio 'sound quality' fantastic thru the 8925 Tilt.
btw: I've got PocketMusic 5 and PocketPlayer 3.51 on my Tilt, but experience significantly better sound (audio quality) when my music is played via PocketMusic compared to PocketPlayer. Curious if any body else here notices this too.
Ok, any other Sony HBH-DS908 bluetooth headset owners experiencing the dropped bluetooth connection problem Linuxus40 and I are experiencing? Any advice on how the problem can be corrected?
Thanks in advance.
Jazz
Click to expand...
Click to collapse
I'm facing the same issue as well! Tried numerous hard resets and fixes you would have thought imaginable! Unfortunately the problem is still existent and it is freaking irritating when you have to press the play button to repair the headset. Worst still - when the music starts playing through the speaker after a call, everyone starts to look at you like you are some moron.
I do really hope there is a way to resolve the problem. Any new fixes i can try???
Senior members? Any help?

linxus40 said:
I have a question regarding bluetooth.
I have an sony HBH-DS980 that works great for music playback on my tytn ii.
The problem i have with it is that when the music is playing and a receive a phone call it notifies me and i answer the call. After the call is over the bluetooth link seems to drop and will no reconnect untill i turn the headset off and on.
Is there a way to make the headset go back to music playing and not drop link automatically?
Click to expand...
Click to collapse
I have this exact same problem on my Sony Ericsson HBH-DS220.
The bluetooth will disconnect after hanging up a phone call. I don't press anything on the headset, I wait for the other person to hang up. When it hangs up, it immediately disconnects the bluetooth headset.
Annoying!

Probably a problem with the bluetooth stack then. The stack is already known to be very buggy and have problems with lots of Bluetooth devices. Luckily, unlike the graphics card, it looks like HTC will be releasing a fixed Bluetooth stack at some point in the future. In the mean time, you are probably out of luck.

Bluetooth connection problem also with Tilt
I have a Plantronics 510 BT earpiece that for no discernible reason is connected one minute and gone the next too. I haven't been able to determine any combination of actions, such as ending a call as the culprit. I always have to make the connection manually between the earpiece and the Tilt also - it never links automatically when I turn the earpiece on like it did with my Treo 650. I've had this Tilt for 3 days and this is probably going to be a show stopper and make me return it to at&t before the eval period in spite of everything else good about the phone. I also have a Plantronics Pulsar 590 stereo headset that I haven't experimented enough with yet to know if the connection is as flaky. But the bottom line is - I'll be damned if I'm going to try to fiddle with establishing a connection and all the steps it can take while I'm driving down the road!

HTC CLUB
I FOUND THIS FILE AT HTC CLUB... Dont know if it will fix your problem or not .. but its for some BLUETOOTH BUG ... This File is For TYTN2...
Description From HTC CLUB:
12/19/2007
Bluetooth Hot Fix (for HTC TyTN II)
Dropped calls sometimes occur when Bluetooth is on. If you encountered the same problem, please download this Bluetooth Hot Fix and install it on your device.
Hope This Helps

[Q] Are you able to play music in your car through Bluetooth?

I am able to connect to my car and use it to make and receive calls with no issues. When I attempt to stream music to the car it connects but the car will not let me switch to the phone audio to play the stream. I think it could be a bug with the ROM.
Anyone else able to use Bluetooth for music streaming in their car?

getting my One wednesday if my Best Buy rep was accurate, and BlueTooth music better work, that's what I always use for playback!

Using it with an HS3000 hard wired into my headunit for the audio profile while simultaneously connected to the headunit itself for the phone profile and its working fine. Perhaps theres a firmware update for the headunit in your car?

I'm not able to get it to see my Sony Automotive Bluetooth player but I haven't messed with it while not driving to really go in to it.

lacrossev said:
Using it with an HS3000 hard wired into my headunit for the audio profile while simultaneously connected to the headunit itself for the phone profile and its working fine. Perhaps theres a firmware update for the headunit in your car?
Click to expand...
Click to collapse
You are receiving the audio through the 3.5mm jack. My phone connects to the car and audio calls work great. I'm also having an issue with my TV. It shows connected but no audio plays, however when I press the volume on the phone it changes on the TV. I'm thinking something is missing or messed up in the ROM. I'm not sure if this is happening with other versions. It would be good to know.

Bachatu said:
You are receiving the audio through the 3.5mm jack. My phone connects to the car and audio calls work great. I'm also having an issue with my TV. It shows connected but no audio plays, however when I press the volume on the phone it changes on the TV. I'm thinking something is missing or messed up in the ROM. I'm not sure if this is happening with other versions. It would be good to know.
Click to expand...
Click to collapse
Well your question seemed to be a question of bluetooth connectivity using the audio profile, so i gave you one example of when it does work for me. It doesn't matter that its outputting from the HS3000's 3.5mm in to a line in in my car, the audio gets to the dongle is the point i was getting at. Here are a few other things i have tested with it since i was curious as to whether this is a bug:
Moto S305, LG Tone, LG Tone+, Francois et Mimi Trois speaker, generic bt speaker i got as a door prize, and a samsung soundbar. Nobody can help you test whether there is a bug if there no information as to what you're trying to connect to other than "your car". As far as i know your car's bt protocols might be outdated and HTC left out some code for their BT drivers to work with older systems or if it is a genuine bug.

I appreciate your input, I thought you meant the cable was connected to your phone. It's wierd that I have a 2013 car and my EVO 4G LTE and an S4 both work but the new M8 doesn't.

I have no problem with streaming over BT to my car stereo or routing phone calls through it. I do have stuttering audio while streaming, however, which upsets me greatly.

I went back to the car and started messing around with settings and it now works. I had to disable and enable audio streaming. Audio is clean and crisp. Thanks for the feedback!

Captain_Throwback said:
I have no problem with streaming over BT to my car stereo or routing phone calls through it. I do have stuttering audio while streaming, however, which upsets me greatly.
Click to expand...
Click to collapse
At times my audio will not come through. turning off BT in the car and turning it back on seems to allow the audio to work.....
I do however get the audio stuttering from time to time. Sounds like a CD skip almost. Yea I have been trying to figure out if there is a setting missing or something....most likely a bug though.....

Is the stuttering with all apps? I havent had much issue now but on my evolte i used ti get stutters whenever i transitioned towers or went screen off using gonemad and some flacs, poweramp seemed to be a bit better at it though.
Sent from my 831C using Tapatalk

Captain_Throwback said:
I have no problem with streaming over BT to my car stereo or routing phone calls through it. I do have stuttering audio while streaming, however, which upsets me greatly.
Click to expand...
Click to collapse
Wow, not good. It's posts like these that help me to be more patient as I wait for my upgrade in July. Hopefully the little one like these are ironed out by that time.

I'm also getting random Bluetooth skips. Probably kernel related.
Sent From My HTC One (M8)

phone is not the issue here. Most smartphones have the capability to stream music over BT. The problem is usually when your car is setup to only handle calls over BT, nothing more. there's a workaround for this: You use Mono Bluetooth app in combination with your favorite music player app. It's not HD, but it works.
Code:
https://play.google.com/store/apps/details?id=com.maxistar.monobluetoothfree

Rydah805 said:
I'm also getting random Bluetooth skips. Probably kernel related.
Sent From My HTC One (M8)
Click to expand...
Click to collapse
It seems my factory car stereo (which is only a year old) doesn't like the M8. I tried my 7 year old BT headphones and they streamed like champs. Stupid factory head units . I'm trying a couple of changes in audio_policy.conf to see if they make a difference. I don't think kernel is the issue here.

Captain_Throwback said:
It seems my factory car stereo (which is only a year old) doesn't like the M8. I tried my 7 year old BT headphones and they streamed like champs. Stupid factory head units . I'm trying a couple of changes in audio_policy.conf to see if they make a difference. I don't think kernel is the issue here.
Click to expand...
Click to collapse
Does your radio have the ability to turn Bluetooth audio streaming on/off? That's what worked for me with my factory unit.

Bachatu said:
Does your radio have the ability to turn Bluetooth audio streaming on/off? That's what worked for me with my factory unit.
Click to expand...
Click to collapse
No.

Alright, fixed up my streaming issue. I'll explain later and post a fix. Busy right now.

So what I ended up doing was updating audio_policy.conf in /system/etc to allow lower bit rate audio over BT/A2DP. Currently the file only allows streaming at 48000, while some devices can only handle good ol' 44100. Adding in the additional value seems to have smoothed out my streaming for the most part.
I did notice some intermittent skipping when my device was in car mode and/or charging at first, but those issues seem to have sorted themselves out now. I would recommend deleting your device and re-pairing after making the change to ensure the connection is set properly.
I'll post up a flashable zip shortly to allow others to see if it helps/works for them.
EDIT: Zip attached. Sorry it took so long, Firefox was giving me problems.

@Captain_Throwback thanks bro, will give it a try. I've noticed it only to skip when using stock HTC media apps. Using Google Play music doesn't skip for me. May be a coincidence? Anyways, flashing your fix.
Sent From My HTC One (M8)

HELP! - OP3T cut audio while playing on car bluetooth

Hello Everyone,
I'm having this issue for some time and was trying to solve by myself but my resources are done.
Scenario: OP3T 128Gb OOS 4.0.2 (no root) playing music using Spotify on a car Bluetooth device (Toyota Corolla - picture of the stereo attached).
Problem: Audio cuts during play. I can also listen some noise indicating problems on audio transmission. Iá attaching a 1 song recorded in the car where is possible to listen the audio cutting some times during just one minute. It's impossible to listen music with this problem. So annoying.
No problems listening to music on other bluetooth devices like earphones or a audio totem. No problems listening using audio jack.
Workaround: When I do a Network Setting Reset the problem goes for a while, normally for a day. The problem come back after some time and I need to reset network settings again. I'm basically resetting network settings every day.
My wife's iPhone plays without any issue. I had a Moto X Style (Pure) before and I had this problema after flash some CM13 based ROMs, solved by flashing the original fw some times. (Moto X Style have some problems and if u flash modem and other thing once it won't work)
Anyone else had this kind of problems? So I need some help to figure out what is happening.
HELP!!!!!

Well, my bluetooth connection is stable. But sometimes when connecting to my car's bluetooth it starts playing music through the phones speaker instead of transmitting it to the car. I have to disable and enable it again - kinda annoying when the party is in your lap, at least while driving in a car.

Sound problems while playing PUBG Mobile

I have encountered a weird problem specifically related to PUBG. When I start the app, it sometimes, randomly routs the audio to phones main speakers (the speaker primarily used for calls). Sometimes, it routs the audio through the loudspeaker even while I have connected a wired headset through adapter provided in the box.
When I connect a Bluetooth headset before starting the game, it plays extremely downgraded sound through the headset or simply uses the primary speaker (as above) as sound output, totally ignoring the bluetooth headset. Whenever this kind of problem occurs, restarting the device solves it, but on a later stage it comes back. Other applications like youtube and Google Play Music behaves as they should with all the three sound output options (Loud Speaker, Wired Headset and Bluetooth Headset). The problem occurs only with PUBG Mobile. Can anyone please provide a solution to this?

kandarpjha said:
I have encountered a weird problem specifically related to PUBG. When I start the app, it sometimes, randomly routs the audio to phones main speakers (the speaker primarily used for calls). Sometimes, it routs the audio through the loudspeaker even while I have connected a wired headset through adapter provided in the box.
When I connect a Bluetooth headset before starting the game, it plays extremely downgraded sound through the headset or simply uses the primary speaker (as above) as sound output, totally ignoring the bluetooth headset. Whenever this kind of problem occurs, restarting the device solves it, but on a later stage it comes back. Other applications like youtube and Google Play Music behaves as they should with all the three sound output options (Loud Speaker, Wired Headset and Bluetooth Headset). The problem occurs only with PUBG Mobile. Can anyone please provide a solution to this?
Click to expand...
Click to collapse
Encountered the same problem with Bluetooth headset and I fixed it by -
1) Going to world chat.
2) Pressing the voice message button for a few seconds.
3) sound stops coming for a second .
4) You get perfect quality audio after that.
PS - It only happens for me using Bluetooth headphones, not in my earbuds. And never tried phone loudspeakers while playing the game.
Actually what happens is, when the game starts, for some odd reason, your phone thinks you're receiving a call and acts accordingly. If you use any of the mic actions in the game for a second, it fixes it.

[email protected] said:
Actually what happens is, when the game starts, for some odd reason, your phone thinks you're receiving a call and acts accordingly. If you use any of the mic actions in the game for a second, it fixes it.
Click to expand...
Click to collapse
That's my concern. Do other phones also have this issue or just Mi A2 has it?

kandarpjha said:
That's my concern. Do other phones also have this issue or just Mi A2 has it?
Click to expand...
Click to collapse
Not sure. But it doesn't bother me too much.

kandarpjha said:
That's my concern. Do other phones also have this issue or just Mi A2 has it?
Click to expand...
Click to collapse
I had the same problem on Redmi 5 plus (Vince)