A2DP Bluetooth Audio Streaming Skipping - Findings - Nexus One Q&A, Help & Troubleshooting

A number of people have mentioned having issues with A2DP streaming on the Nexus.
I just found out something interesting... I've been getting annoying skips in music when playing audio to my car stereo, so after experimenting I've found:-
Open bluetooth settings, select headunit, enter pin, allow phonebook access and for the duration of that connection I get perfect audio.
Turn off either the headunit or phone, or both and allow them to connect again, then audio skips...
Open bluetooth settings, select headunit, unpair, select headunit, enter pin, allow phonebook access and for the duration of that connection, once again I get perfect audio.
The only thing I can think of is that the good connection is initiated by the N1 and the bad one by the headunit when it connects to the N1 at startup. Maybe capability negotiation problem? Maybe N1 selects a lower bitrate when it connects than the headunit does when it connects, any ideas? Is it possible to tweak the N1 to restrict the connection parameters?
- Anthony

I use a HT820 by Motorola and do not have any issues with skipping.
Started stock, then CM, now froyo. no issues on any of these roms.

That's great, but whilst bluetooth is a standard, some manufacturers get things wrong, and motorola may well have handled this better, this handsfree kit worked with:-
Hermes,
TYTN II
Touch Pro,
Sony Xperia,
Diamond2.
The kit within my headunit is built by parrot, so no small fish in the bluetooth pond.... It has a little menu with a list of models of phone with "funny" (non-standard) bluetooth implementations so that it can implement workarounds.
To top it off, others, with different handsfree kits have similar issues.
So, back to what I was saying...
I've just confirmed that it doesn't matter which end initiates the connection, if the phone was paired previously it skips, if you unpair and re-pair (during pairing the phone is connected as part of that process) for the duration of that connection the sound is flawless.
It must be using different connection parameters on that first connection, but I can't even see _any_ information about the connections, like bitrate/bitpool / sample rate etc.
Is there any way I can get the connection information for current bluetooth connections?
Does anyone know the way around the AOSP code enough to see if there could be any difference in the pairing connection to the normal connections?
I bet it really is that it uses "safe" values during the initial connection.
- Anthony

http://code.google.com/p/android/is...t&colspec=ID Type Status Owner Summary Sta rs
http://forum.xda-developers.com/archive/index.php/t-622231.html
All i found on it, hope it helped. Otherwise, good luck finding out a solution.

Devastatin said:
I use a HT820 by Motorola and do not have any issues with skipping.
Started stock, then CM, now froyo. no issues on any of these roms.
Click to expand...
Click to collapse
I have the same headphones and only notice skipping when I'm walking fast, with my phone in my pocket...or I turn my head away from the phone. But that's all my doing, not the phone.

Related

Multiple Bluetooth device re-connection issues

I have 3 stereo bluetooth devices and 2 headset only devices.
The problem comes from auto re-connecting to the stereo devices.
The only way it seems to work at all is if I pair all the stereo devices first.
If I reset, then I usually have to click and hold on the device in BT Settings and select "set as wireless stereo" to get the stereo connection to kick in.
In my tests I have made sure only one device is on at a time.
It certainly is not as easy as it should be.
It seems to be worse after a Tilt reset.
So my questions are : Has anyone else seen this behavior and is there a fix or work-around for it?
If not, does anyone no how to make a direct link to the BT Settings Window so at least it would only be a couple clicks to fix it?
You need at least one of each device (headset and stereo headset) to see this problem.
I've seen this with my Wizard as well as the Tytn II, so I suspect it's a "feature" of the MS BT stack. I think it's somehow related to the "set as wireless stereo" feature -- apparently only one device at a time can have that setting, and MS turns the setting off if it can't connect to that device. Note that there's no such setting for handsfree, and connections on that profile work flawlessly between multiple devices.
Its a little better
What I found out is that if you pair all your stereo devices first and then all the non-stereo, things seem to work a bit better and Dutty's BT-Link plugin will reconnect the stereo part most of the time, so its only a click away and sometimes you don't need to turn the device to discover mode.
However, if anyone from MS reads this, there is no reason not to automatically connect into full stereo, IF the device is the only one in the list that can be found at any point in time. And if they wanted to be really cool, if not, then present the user with a list so he can click to choose.
Similar problem
Hi BSW11,
Im having a similar problem with the pairing of my carkit.
http://forum.xda-developers.com/showthread.php?p=1717330#post1717330
I believe it can be traced to the the MS BT stack not handling the automatic re-pairing correctly. I am surprised that not many other people have notice or complained in this forum about it.
Adam
No BT Wireless Stereo device will auto-connect to any WM device, you have to tell your phone to connect to it via the BT setting unless a 3rd party app has that function built in to it. This is a 'feature' of MS WM OS system.
Any BT 'headset' (ie mono earpiece) will auto connect if it has been selected for 'use as headset'
Hope this helps.

Bluetooth audio madness - am I asking for too much?

Hi all,
I've just bought my first HTC unit ever (Kaiser), which is also my first Windows Mobile Phone (I used PocketPCs since 2001 but with no integrated phone so far), and it seems to have a lot of issues in the areas of "regular phone" functionality.
However, the one that is really freaking me out so far is the whole "Bluetooth audio" area. I'm just wondering whether I would ever be able to get what I want or am I asking too much.
I have 3 Bluetooth audio devices, all of them are dual Headset/Headphone ones: in-car fixed Motorola T605, Jabra BT8010 and Plantronics 590. Now, naturally, I want to use the T605 in the car, Jabra for phone calls only throughout the day and for music occasionally, and Plantronics when I'm in the gym, for both music and occasional incoming phone calls.
I had all this working flawlessly with my SonyEricsson K800i phone: each device connected to the phone automatically when powered up and automatically took over both Headset and Headphone functions. The only minor problem was reconnecting Jabra when stepping out of the car, which required only a short tap on the button.
Now, with Kaiser, things are much more complicated. When a device (any of them) is connected to the phone, both as Headset and Headphones, it works mostly OK, although sometimes there is a problem of sound not coming through the device when an incoming call was answered while playing music. The music is suspended OK, but the sound comes from the phone speaker instead of the respective Bluetooth device. This happens from time to time, not always.
But the biggest problem is the initial connection of a device after another one has already been connected. When I enter my car and fire up the engine, I want the T605 to automatically connect to the phone even if Jabra has already been connected. This I was unable to achieve. Instead, I have to manually disconnect Jabra (by powering it off or temporarily powering off Bluetooth on the phone) and then manually connect the phone with the T605, for both Headset and Wireless Music (two actions required!). Now, for me, this is unacceptable.
Moreover, when I arrive to a destination and want to step out of the car, I have to manually reconnect my Jabra to the Kaiser, again, through the phone’s Bluetooth settings as described above. A short tap on Jabra’s button no longer works for this purpose, in opposite to SE K800i.
Making the long story short, this is completely unacceptable behavior for me, and I haven’t found so far a way to make it the way I need it.
Any advices?
mpogr said:
Hi all,
I've just bought my first HTC unit ever (Kaiser), which is also my first Windows Mobile Phone (I used PocketPCs since 2001 but with no integrated phone so far), and it seems to have a lot of issues in the areas of "regular phone" functionality.
However, the one that is really freaking me out so far is the whole "Bluetooth audio" area. I'm just wondering whether I would ever be able to get what I want or am I asking too much.
I have 3 Bluetooth audio devices, all of them are dual Headset/Headphone ones: in-car fixed Motorola T605, Jabra BT8010 and Plantronics 590. Now, naturally, I want to use the T605 in the car, Jabra for phone calls only throughout the day and for music occasionally, and Plantronics when I'm in the gym, for both music and occasional incoming phone calls.
I had all this working flawlessly with my SonyEricsson K800i phone: each device connected to the phone automatically when powered up and automatically took over both Headset and Headphone functions. The only minor problem was reconnecting Jabra when stepping out of the car, which required only a short tap on the button.
Now, with Kaiser, things are much more complicated. When a device (any of them) is connected to the phone, both as Headset and Headphones, it works mostly OK, although sometimes there is a problem of sound not coming through the device when an incoming call was answered while playing music. The music is suspended OK, but the sound comes from the phone speaker instead of the respective Bluetooth device. This happens from time to time, not always.
But the biggest problem is the initial connection of a device after another one has already been connected. When I enter my car and fire up the engine, I want the T605 to automatically connect to the phone even if Jabra has already been connected. This I was unable to achieve. Instead, I have to manually disconnect Jabra (by powering it off or temporarily powering off Bluetooth on the phone) and then manually connect the phone with the T605, for both Headset and Wireless Music (two actions required!). Now, for me, this is unacceptable.
Moreover, when I arrive to a destination and want to step out of the car, I have to manually reconnect my Jabra to the Kaiser, again, through the phone’s Bluetooth settings as described above. A short tap on Jabra’s button no longer works for this purpose, in opposite to SE K800i.
Making the long story short, this is completely unacceptable behavior for me, and I haven’t found so far a way to make it the way I need it.
Any advices?
Click to expand...
Click to collapse
Have you tried the Bluetooth fix on HTC's website?
Asking is easy, searching is hard work for some people it seems. No offence..
I'm using Schap's ROM which is supposed to have this fix built-in.
mpogr said:
I'm using Schap's ROM which is supposed to have this fix built-in.
Click to expand...
Click to collapse
Ahh. didn't see that in your first post..
I think you are suffering the same prob as many. Every time a BT device comes out, it never seems to work with what we had before. BT protocols are NOT fixed (The IEEE STILL have not fully implemented a specific proto!), they change faster than we change our devices.
As I said before (without meaning any offence) search the whole forum, many threads have been out on this subject and some advice/fixes or equipment references are out there.
Well, I did search these forums and haven't seen someone referring to the same kind of problems I'm having.
Now, regarding your comment about variety of BT devices... I don't buy that. My SE K800i is 1 year old and works perfectly with this combination of devices.
I have pretty extensive experience with Broadcom/Widcomm BT stack on PC and older models of PocketPC (the one I have is IPAQ 5555) and I suspect these foes are direct derivatives from the fact Kaiser uses MS BT stack, which is much inferior. However, it seems nobody was able to make Broadcom/Widcomm stack work on Kaiser so far...
mpogr said:
Well, I did search these forums and haven't seen someone referring to the same kind of problems I'm having.
Now, regarding your comment about variety of BT devices... I don't buy that. My SE K800i is 1 year old and works perfectly with this combination of devices.
I have pretty extensive experience with Broadcom/Widcomm BT stack on PC and older models of PocketPC (the one I have is IPAQ 5555) and I suspect these foes are direct derivatives from the fact Kaiser uses MS BT stack, which is much inferior. However, it seems nobody was able to make Broadcom/Widcomm stack work on Kaiser so far...
Click to expand...
Click to collapse
OK, I'm sorry if you don't. I only tried to help. Seem's you've asked a question and have already formed an opinion to it!!!
I have personal experience of Sony's proprietory connection limitations.
My BT works fine on all my devices....will leave you to others.
Looks like I found a partial solution which makes my life almost perfect...
It seems the real problem is taking over Kaiser from a previously connected device. So, if I switch my Jabra off several seconds before I fire up my car's engine, my T605 is able to connect to it. Same goes the other way around, I can turn off the car engine and then fire up the Jabra several seconds later. In this case all is good.
Looks like the MS BT stack is still ill-implemented though, as, for example, when in active Wireless Music BT connection, the device is unable to discover any other Bluetooth devices or to connect to other device's BT serial interface, which makes using external GPS devices difficult.
This could be a problem for me since my car (Citroen C5) has special anti-radiation coating on its windshield which quite effectively screens the satellite signals. Therefore I came up with a solution of having a BT GPS device permanently located in the car (actually, in the driver's seat back pocket) hardwired to the mains as well as to an external GPS antenna. This setup is effectively beating both reception and start-up time problems.
With Kaiser’s limitation on simultaneous BT connections I’m unable to use this setup anymore. Yes, I could bypass using an additional GPS device by connecting the external antenna to Kaiser’s internal GPS, but this looks like a cumbersome solution as I couldn’t find a Kaiser-compatible mounting with a socket for hardwiring an external GPS antenna.
Luckily for me, I still have my old IPAQ loaded with GPS software which I prefer to use for navigation anyway thanks to its significantly bigger screen
mpogr said:
Looks like I found a partial solution which makes my life almost perfect...
It seems the real problem is taking over Kaiser from a previously connected device. So, if I switch my Jabra off several seconds before I fire up my car's engine, my T605 is able to connect to it. Same goes the other way around, I can turn off the car engine and then fire up the Jabra several seconds later. In this case all is good.
Looks like the MS BT stack is still ill-implemented though, as, for example, when in active Wireless Music BT connection, the device is unable to discover any other Bluetooth devices or to connect to other device's BT serial interface, which makes using external GPS devices difficult.
This could be a problem for me since my car (Citroen C5) has special anti-radiation coating on its windshield which quite effectively screens the satellite signals. Therefore I came up with a solution of having a BT GPS device permanently located in the car (actually, in the driver's seat back pocket) hardwired to the mains as well as to an external GPS antenna. This setup is effectively beating both reception and start-up time problems.
With Kaiser’s limitation on simultaneous BT connections I’m unable to use this setup anymore. Yes, I could bypass using an additional GPS device by connecting the external antenna to Kaiser’s internal GPS, but this looks like a cumbersome solution as I couldn’t find a Kaiser-compatible mounting with a socket for hardwiring an external GPS antenna.
Luckily for me, I still have my old IPAQ loaded with GPS software which I prefer to use for navigation anyway thanks to its significantly bigger screen
Click to expand...
Click to collapse
Glad to here you have a resolution (albeit a partial one).
Just one thing, why would you want to connect to an external BT GPS at the same time as your car kit? Can't you get a good enough signal on the internal GPS or is there another reason?
Farsquidge said:
...Can't you get a good enough signal on the internal GPS...?
Click to expand...
Click to collapse
Yes, that's what I wrote in my post above. This antiradiation coating is a real satellite signal killer...
But, IMO, Kaiser's screen is too small for in-car navigation anyway, so having a dedicated unit is always a plus
mpogr said:
Yes, that's what I wrote in my post above. This antiradiation coating is a real satellite signal killer...
But, IMO, Kaiser's screen is too small for in-car navigation anyway, so having a dedicated unit is always a plus
Click to expand...
Click to collapse
Sorry, blind AND stupid!
Yes I agree the screen is too small for general use. I have a dedicated GPS in the car and only use the TyTnII as a temporary routefinder whenever needed.

A2DP BitPool settings

I'm sorry to have to post this, I don't like asking for help!
I've tried searching with the term BitPool (and got nothing even though this word is in the KaiserTweek thread so that at least should have come up in the results!) and A2DP as well as several other key words on their own but have found nothing, I've searched both this forum and the main Kaiser forum, with child forum search activated. (Is the search function playing up?)
I want to try playing with my A2DP settings, I have found the registry key to edit but don't want to try random settings. I also have KaiserTweek, but although there are several options in the bitpool setting, for some reason I can only select the default and "very low" options. The others won't stick and revert back to default.
So could some kind soul either post the different settings to try in the registry, or point me to a thread (I'm sure there was one once!) that discusses the merits of the various settings. The issue I'm having is that when connected to my rSAP carkit (Nokia 610) music jumps like crazy. I've tried enabling and disabling joint audio to no effect (soft reset each time to make sure the device has updated the registry) and figured adjusting the bitpool may have some effect. Course I may also be completely wrong as music works fine when the audio isn't connected via A2DP (hard wire connection) and the phone is connected via rSAP, or when the A2DP is active, but rSAP isn't. It may just be a limitation of the bluetooth bandwidth. The solution posted in another thread or cycling bluetooth on/off doesn't work for me.
Thanks
MODS - please delete one of these double threads, or merge them. Dunno why there are two!
Hi Steve. It sounds like you are running in to the same problem as I am as described in my thread http://forum.xda-developers.com/showthread.php?t=356630.
Unfortunately I was unable to find a bitpool setting change that fixed the problem.
I'd be very curious to hear whether your skipping also coincides with cell phone tower hand-overs and whether the skipping goes away if you soft-reset your device before you connect it to your car and A2DP receiver.
It happens even when stationary, and using phone alarm too confirms that there is no cell switching going on. In fact the phone has full strength indicated so it's probably not even hunting for a better signal.
I too notice the problem is worse at night, but I don't soft reset the phone in the morning, I just connect and go. Even then I have to disable the bluetooth carkit, but in the evenings its the devil's own job getting A2DP to stream. The bluetooth dongle says its connected, the phone thinks its connected but no music comes out of either the car radio (wired to the dongle) or the phone. Bit of playing and it will either work, or I'll give up.
Actually thinking about it. You have the problem when you change cell towers, so the phone is registering with the new tower. My carkit uses rSAP (remote sim access profile) so the phone itself is effectively switched off, the carkit becomes the phone by accessing my sim and handles the cell side of things. So I think I can effectively rule out the cell tower thing.
Thanks for your reply!

[Q] Issues with Moto X and two Bluetooth devices

I searched this forum and didn’t see any posts related to this issue directly, please direct me to any existing threads if I may have missed them. Sorry for the length of post, but I wanted to be as detailed as possible to fully explain the issue.
I am having some issues with the Bluetooth connections that I use in my car. I had this setup working previously on my Droid Razr Maxx with no issues, and was really hoping it would carry over to my Moto X.
I use Tasker in my car and have several profiles setup based on my Bluetooth connection state. When I enter my car, I connect to my General Motors Bluetooth for hands free calling. This connection works without issue. I also have a small USB powered Bluetooth audio receiver that converts the Bluetooth stream to a 3.5mm cable and goes into the radio deck for audio. It was a pretty cheap dongle that I got on eBay. It doesn’t have a brand name on it, but it comes up in my phone as “dmzmusic”. I’ve never had any major issues with it before, other than on occasion it fails to turn on when the car starts, but shutting the car off and turning it back on again works fine.
Last week I had my phone in a basically stock 4.4 state. Not rooted, nothing changed, etc. When I would get in the car, General Motors Bluetooth connected just fine. I did not happen to take any phone calls last week, so I’m not sure about how well that was working. I’ll get to this in a minute. My other connection for dmzmusic seemed to connect and then very quickly disconnect. This was evidenced by my Tasker profile launching Pandora, which it is supposed to do when it connects to dmzmusic. However, Pandora immediately exited again, and when I went to the Bluetooth settings, only General Motors was connected. If I tapped on dmzmusic in the list of paired devices, it connected and worked fine.
Over the weekend I rooted my Moto X with SlapMyMoto, which was quite a long process, but in the end, I was rooted and all was well. This morning, I got in my car and re-paired both devices mentioned above. When the Tasker profile fired for dmzmusic, I watched it launch Pandora, and then close it within a few seconds (there is an exit task to kill Pandora). It did this cycle three times, and then apparently stopped trying. As with before, I tapped on the connection and it worked fine. It launched Pandora, music played my whole way to work, and Pandora was killed when I arrived at work.
Now, back to the General Motors issue. Today when I was driving to work in the lovely Minnesota weather, my boss called to see where I was. My music paused, but my radio deck did not show an incoming call on the screen. I pressed the hands-free answer button, but it didn’t work. I picked up the phone and swiped right to answer, but it didn’t come through on Bluetooth. So I started talking on the handset, and after about 30 seconds, it connected to the radio and hands-free worked. When I was done with the call Pandora and music resumed, as it should.
So my question is, has anyone else had any issues with hands free Bluetooth, and/or any issues when using a hands-free device AND a media only device? In the Bluetooth settings, my General Motors connection only has the option for phone. The dmzmusic device has phone and media, but I have unchecked phone so it’s set to media only, if that makes any difference.
I know it’s a somewhat unique situation, but it’s really annoying that it doesn’t work. Tonight I am going to test having a few seconds delay on the Pandora task to see if that helps the repeat cycle that it did this morning.
Thanks!
fury683 said:
I searched this forum and didn’t see any posts related to this issue directly, please direct me to any existing threads if I may have missed them. Sorry for the length of post, but I wanted to be as detailed as possible to fully explain the issue.
I am having some issues with the Bluetooth connections that I use in my car. I had this setup working previously on my Droid Razr Maxx with no issues, and was really hoping it would carry over to my Moto X.
I use Tasker in my car and have several profiles setup based on my Bluetooth connection state. When I enter my car, I connect to my General Motors Bluetooth for hands free calling. This connection works without issue. I also have a small USB powered Bluetooth audio receiver that converts the Bluetooth stream to a 3.5mm cable and goes into the radio deck for audio. It was a pretty cheap dongle that I got on eBay. It doesn’t have a brand name on it, but it comes up in my phone as “dmzmusic”. I’ve never had any major issues with it before, other than on occasion it fails to turn on when the car starts, but shutting the car off and turning it back on again works fine.
Last week I had my phone in a basically stock 4.4 state. Not rooted, nothing changed, etc. When I would get in the car, General Motors Bluetooth connected just fine. I did not happen to take any phone calls last week, so I’m not sure about how well that was working. I’ll get to this in a minute. My other connection for dmzmusic seemed to connect and then very quickly disconnect. This was evidenced by my Tasker profile launching Pandora, which it is supposed to do when it connects to dmzmusic. However, Pandora immediately exited again, and when I went to the Bluetooth settings, only General Motors was connected. If I tapped on dmzmusic in the list of paired devices, it connected and worked fine.
Over the weekend I rooted my Moto X with SlapMyMoto, which was quite a long process, but in the end, I was rooted and all was well. This morning, I got in my car and re-paired both devices mentioned above. When the Tasker profile fired for dmzmusic, I watched it launch Pandora, and then close it within a few seconds (there is an exit task to kill Pandora). It did this cycle three times, and then apparently stopped trying. As with before, I tapped on the connection and it worked fine. It launched Pandora, music played my whole way to work, and Pandora was killed when I arrived at work.
Now, back to the General Motors issue. Today when I was driving to work in the lovely Minnesota weather, my boss called to see where I was. My music paused, but my radio deck did not show an incoming call on the screen. I pressed the hands-free answer button, but it didn’t work. I picked up the phone and swiped right to answer, but it didn’t come through on Bluetooth. So I started talking on the handset, and after about 30 seconds, it connected to the radio and hands-free worked. When I was done with the call Pandora and music resumed, as it should.
So my question is, has anyone else had any issues with hands free Bluetooth, and/or any issues when using a hands-free device AND a media only device? In the Bluetooth settings, my General Motors connection only has the option for phone. The dmzmusic device has phone and media, but I have unchecked phone so it’s set to media only, if that makes any difference.
I know it’s a somewhat unique situation, but it’s really annoying that it doesn’t work. Tonight I am going to test having a few seconds delay on the Pandora task to see if that helps the repeat cycle that it did this morning.
Thanks!
Click to expand...
Click to collapse
Yup... My Dev GSM Moto X on 4.2.2 connected just fine to my Mazda for both Phone and A2DP everytime I entered or exited the car. With 4.4, I'd have to manually go into Bluetooth and have the phone connect to the car. Very annoying... Haven't had that happen since ICS days.. Might have to downgrade to 4.2.2 again just to make this go away.
Bluetooth working fine on 4.4 with my Hyundai Elantra. Phone and A2DP. Maybe try repairing?
totempole said:
Yup... My Dev GSM Moto X on 4.2.2 connected just fine to my Mazda for both Phone and A2DP everytime I entered or exited the car. With 4.4, I'd have to manually go into Bluetooth and have the phone connect to the car. Very annoying... Haven't had that happen since ICS days.. Might have to downgrade to 4.2.2 again just to make this go away.
Click to expand...
Click to collapse
Thanks. I wasn't able to test it on 4.2.2 (it took right away OTA out of the box) with my Moto X, but it was working fine on my Droid Razr Maxx on 4.1.2 Jelly Bean before I got the Moto X.
I will have to try and see how it works with just the A2DP device without the handsfree. I rarely ever talk on the phone, and with the Touchless Controls I could call people and just pick up the phone. Or turn the phone portion back on for the A2DP device so the sound would come through my speakers but I'd still have to use the mic on my phone...
Still annoying. Thanks again for the reply.
gtg465x said:
Bluetooth working fine on 4.4 with my Hyundai Elantra. Phone and A2DP. Maybe try repairing?
Click to expand...
Click to collapse
Both pair automatically together when you enter the car?
I can get them to coexist, but I have to manually add the A2DP device. The car radio (General Motors) connects fine, but the A2DP cycles and then gives up, it seems.
I will try pairing them in a different order, and temporarily disabling or adding a wait clause to my Tasker profile to see if it works without that.
Thanks,
I have a Dension BT gateway for my car that provides BT audio and hands free. My phone connects automatically as long is bluetooth is turned on. I also connect to a BT OBD2 adapter sometimes, and I tried it today, and I kept playing Pandora via BT and also connected to the OBD2 adapter and had data going from both of them.
fury683 said:
Both pair automatically together when you enter the car?
I can get them to coexist, but I have to manually add the A2DP device. The car radio (General Motors) connects fine, but the A2DP cycles and then gives up, it seems.
I will try pairing them in a different order, and temporarily disabling or adding a wait clause to my Tasker profile to see if it works without that.
Thanks,
Click to expand...
Click to collapse
Yeah, but they aren't a separate connection I don't think. Pretty sure the one connection handles both.
Seems to be an issue with the A2DP device specifically. I unpaired my car and the dmzmusic device and repaired them both, same result. I added just the dmzmusic, and got the same thing.
I changed my Tasker profile to just flash a toast message to show it connecting and disconnecting instead of firing Pandora to see if that mattered and it didn't. I did not try disabling the Tasker actions entirely to see if that worked.
I have a pair of Bluetooth headphones at home that I may try as well to see if it will connect to those. They fire the same task as the dmzmusic does to launch Pandora when they connect, and kill it when they disconnect.
Hoping this gets fixed, because it's VERY annoying.
Is it possible to submit this to Google/Moto as a bug if it is a larger problem with all A2DP devices?
But it's not a problem with all A2DP devices. Works fine with both my 2013 Hyundai Elantra and my Jaybird Freedom buds.
gtg465x said:
But it's not a problem with all A2DP devices. Works fine with both my 2013 Hyundai Elantra and my Jaybird Freedom buds.
Click to expand...
Click to collapse
Thanks. I will try it with the Philips bluetooth headphones as well. The device in my car is pretty cheap. I don't know what version of Bluetooth it has, but it was only about $5. Anyone know of a similar device that can receive a Bluetooth audio signal and convert it to 3.5mm, and is powered by USB?
totempole said:
Yup... My Dev GSM Moto X on 4.2.2 connected just fine to my Mazda for both Phone and A2DP everytime I entered or exited the car. With 4.4, I'd have to manually go into Bluetooth and have the phone connect to the car. Very annoying... Haven't had that happen since ICS days.. Might have to downgrade to 4.2.2 again just to make this go away.
Click to expand...
Click to collapse
Well I sort of solved this. There's an app in the Play Store called Bluetooth Auto Connect. This can connect to bluetooth devices with a set of conditions and states, and works as a plug-in to Tasker. I told it to connect to dmzmusic upon connection to any other bluetooth device (in this case, my General Motors hands free). Worked perfectly. Thought you'd like to try it out for your dual device setup.
However, I also have a new issue. It seems the reason my phone call wasn't on bluetooth at first was due to some sort of connection issue with the General Motors unit. While driving home tonight, every few minutes my car radio said Connected. And every time I turned the car screen on to thumb up a song on Pandora, it flashed Connected to a trusted device. Which implied to me that it was disconnecting periodically. No idea why it would do this. Didn't see any setting for it in bluetooth, and battery saver isn't on.
Anyone seen something like this? Will try tomorrow without the trusted device settings to see if that matters....
I noticed a similar auto-connect issue with mine, when I was attempting to troubleshoot the stuttering A2DP issues I'm having. If I have the HFP and A2DP profiles both enabled, they both connect right up when the ignition is on. If I have the HFP profile disabled, and only A2DP enabled, it doesn't connect right away and I usually have to manually force it. Very strange. This whole BT situation on this phone has been a pretty big disappointment for me, since I had everything working great with my GNex (running 4.3) and now it's like I've lost the heart of my car audio system.
I bought the Kinovo BT dongle for my wife for Christmas, so it will be interesting to see how that works with her Moto X. I'm pretty excited about trying out the AptX encoding for lossless audio, but I doubt she will even notice the difference.
Just to give you an update.. I downgraded to 4.2.2 and it connects to my Mazda automatically just fine.. Upgraded to 4.4 and the problem returns.. No apps.. Stock + root. Keep in mind that the problem lies only with the auto connect aspect of it.. Streaming/calls work fine but only after manually connecting.
Sent from my XT1053 using Tapatalk
totempole said:
Just to give you an update.. I downgraded to 4.2.2 and it connects to my Mazda automatically just fine.. Upgraded to 4.4 and the problem returns.. No apps.. Stock + root. Keep in mind that the problem lies only with the auto connect aspect of it.. Streaming/calls work fine but only after manually connecting.
Sent from my XT1053 using Tapatalk
Click to expand...
Click to collapse
Did you look at the auto connect app? It worked fine for me. My Bluetooth stopped working for a day or two because I froze a process without realizing what it was so BT wouldn't turn on at all. I think I have to remove and repair both of my devices to get the same setup I had on my Razr Maxx on 4.1.2,
The connecting/disconnection and/or 1-2 minute lag from my General Motors hands-free connection was annoying too. Have to see if that persists. I tried making the A2DP device the trusted one to see if that changes anything.
Really hoping this is something that Moto can/does fix, especially through a Play Store push like they've done with Active Display and the camera app.
not that this is much help for the OP, but my subaru auto connects voice (calls) automagically each time. it also auto-pairs/connects with my TuneLink audio (BT receiver for audio output over headphone/FM).
in the bluetooth settings, the settings button next to your device brings up the paired bt device profile. check to see if all of your devices are registered correctly. for example, my subaru says, "phone audio" and my tunelink says, "media audio".
to help complicate/annoy/support above, i also have a soundbar and BT house phone (cordless). both devices behave the same way my car/tunelink do.
640k said:
not that this is much help for the OP, but my subaru auto connects voice (calls) automagically each time. it also auto-pairs/connects with my TuneLink audio (BT receiver for audio output over headphone/FM).
in the bluetooth settings, the settings button next to your device brings up the paired bt device profile. check to see if all of your devices are registered correctly. for example, my subaru says, "phone audio" and my tunelink says, "media audio".
to help complicate/annoy/support above, i also have a soundbar and BT house phone (cordless). both devices behave the same way my car/tunelink do.
Click to expand...
Click to collapse
Thanks. I do have the boxes ticked in the device settings for which stream to use. The General Motors connection only has Phone Audio (and it's checked) and the dmzmusic A2DP device lists Phone Audio and Media Audio, only Media is checked.
Did you have these devices setup on 4.2.2 before taking the upgrade to 4.3? Did you wipe in the process? Wondering if that's why @totempole had the issue if he is rooted, he probably wiped the device in the process SBFing back to 4.2.2. If you aren't rooted and didn't wipe between 4.2.2 and 4.4, that could explain why it works OK for you and not us..
fury683 said:
Thanks. I do have the boxes ticked in the device settings for which stream to use. The General Motors connection only has Phone Audio (and it's checked) and the dmzmusic A2DP device lists Phone Audio and Media Audio, only Media is checked.
Did you have these devices setup on 4.2.2 before taking the upgrade to 4.3? Did you wipe in the process? Wondering if that's why @totempole had the issue if he is rooted, he probably wiped the device in the process SBFing back to 4.2.2. If you aren't rooted and didn't wipe between 4.2.2 and 4.4, that could explain why it works OK for you and not us..
Click to expand...
Click to collapse
not rooted/haven't wiped.
640k said:
not rooted/haven't wiped.
Click to expand...
Click to collapse
Must be something with setting it up AFTER taking the update to 4.4 Kit Kat. Wonder if @totempole tried setting thiers up after going back to 4.2 and before taking the upgrade for the root process with SlapMyMoto?
fury683 said:
Must be something with setting it up AFTER taking the update to 4.4 Kit Kat. Wonder if @totempole tried setting thiers up after going back to 4.2 and before taking the upgrade for the root process with SlapMyMoto?
Click to expand...
Click to collapse
could be completely device specific too. if your vehicle is BT v2.x or whatever. my tunelink specifically has problems with data/audio stream with the X that my X doesn't have problems with on other devices. could be software/hardware incompatibility issues.
FWIW, my vtech BT phone @ home would NEVER pair with other devices. i would always have to manually pair.
I just emailed Moto about this, because I'm having bugs too. I think that you're on to something, 640k. My Pioneer headunit (FH-P800BT) has BT 2.0, and while HSP connects fine, A2DP only works on the first pair, and after disconnecting once and reconnecting, it won't ever connect A2DP. I have to completely unpair the phone and re-pair it to get both A2DP and HSP working. My phone also gets stuck on "Connecting..." under BT whenever it's having issues connecting with A2DP. Here's the email I sent off to Moto"
I've noticed an issue with my new Moto X that I never had with my Samsung Galaxy Nexus. The phone itself performs way better than my older phone, but I've had a specific bluetooth problem. I have a Pioneer headunit that supports A2DP as well as HSP (music playback and headset functionality) and with my Galaxy Nexus, it worked great, I paired my phone up with the headunit, and both A2DP and HSP would pair at the same time, and work perfectly. With my Moto X, when I first pair the phone to the headunit, it pairs both profiles, but after I've disconnected (turned car off or turned bluetooth off) and come back, it only pairs HSP, and when I try to pair A2DP, my phone gets stuck on "Connecting..." under bluetooth to the headunit, and never will connect to A2DP unless I unpair and re-pair the entire phone. I've tried resetting my headunit and phone and still the same problem exists. Looks like other people are having issues with bluetooth too, as per this article on a popular Android forum > http://forum.xda-developers.com/showthread.php?t=2562186 < I'd like you all to check this out. Seems it's just on 4.4, and wasn't present on 4.2.2 (I never checked myself on 4.2.2, as I immediately upgraded to 4.4 when I got my phone. This doesn't seem to be a hardware problem, but more of a software problem. Please check into this, and don't just read this and act like it's only a problem a handful of people are having. I'd like to have this fixed, and while it's not a deal-breaker for me to use the phone, it does make me a bit frustrated. Thanks in advance!
Click to expand...
Click to collapse

[Q] Bluetooth Connection Issue (Redux)

Hey All,
I've done a quick and dirty search for this problem, but I haven't found anything that's exactly the same.
I have an XT1060, Dev Ed, on KK 4.4.4, and I'm just wondering, am I the only one who cannot get my bluetooth radio to hook up to paired devices easily?
The problem is, I always have to ask to connect manually; this is a bit of a pain, especially after turning off my car, say, for a few seconds. Oh, it'll connect, but sometimes it takes 10-15 tries before that connection is made, and even then, it's often after I have to disconnect then attempt to reconnect a few times because it doesn't connect both the phone and media modes.
I have done the unpair/re-pair thing a couple of times, but nothing changes.
I had an HTC phone before this, and it'd reconnect automagically to my cars BT server, so I suspect it's nothing to do with the car's BT radio. I really miss that...
Thanks for any suggestions anyone might have in how to remedy this. Fwiw, I'm willing to go through a diagnostic procedure if someone would clue me in to just how to do that.
cheers,
john
I've had issues with the bluetooth and pairing. When I was on 4.2.2 (I think..) it wouldn't connect automatically at all, and I used an app to connect for me. I have a Chevrolet Cobalt and it wouldn't connect to my built in bluetooth for calls or a small bluetooth dongle that I use for playing music through the AUX input on the stock radio.
https://play.google.com/store/apps/details?id=org.myklos.btautoconnect&hl=en
Once I was on 4.4.2 it seemed to work much better. I have no real issues now on 4.4.4. The only time I notice it not really working right is when I try to connect to the bluetooth speaker in our bathroom at home. If I turn the speaker on, it almost always connects to my girlfriends phone nearly instantly, even though I open the bluetooth menu and tap the paired device to manually initiate right when I turn on the speaker. It usually takes me a few tries to get mine to connect before hers, or I ask her to shut her bluetooth off for a moment while I connect. She uses the speaker every day because she leaves for work after me, so it only happens to me 1-2 times per month on the off chance that I want to listen to music or a baseball game in the shower, so it never really bothered me much.
I think the bluetooth radio in this phone could be better.. I never had any similar issues with my Droid X or Moto Razr Maxx so I'm not sure what the deal is...
Edit: forgot to mention I also have an XT1060, but not dev edition. My bootloader is unlocked and I am rooted, but using the official 4.4.4 VZW rom with Xposed.
I have never had any issues pairing Bluetooth - on either my car or moto 360 watch (even simultaneously).
However, I have noticed that the Bluetooth connects much quicker on custom ROMs when compared to stock.
I think tour connection issue may be a setting or rogue app related.
Sent from my Moto X using XDA Free mobile app
Thanks to both of you for your replies!
Fwiw, things have not gotten any better since I posted my question. I'm getting more accustomed to it, though.
As for the possibility of a rogue app, yes I suppose so, but short of uninstalling everything, and adding them one by one and trying to connect to something via BT, how can someone go about debugging such a thing?
cheers,
john
jrredho said:
Thanks to both of you for your replies!
Fwiw, things have not gotten any better since I posted my question. I'm getting more accustomed to it, though.
As for the possibility of a rogue app, yes I suppose so, but short of uninstalling everything, and adding them one by one and trying to connect to something via BT, how can someone go about debugging such a thing?
cheers,
john
Click to expand...
Click to collapse
You may need to delete the profile for the Bluetooth pairing in your car. Could be a conflict there.
Otherwise, try looking at your Bluetooth settings on the phone.
Sent from my Moto X using XDA Free mobile app
jrredho said:
...
I have an XT1060, Dev Ed, on KK 4.4.4, and I'm just wondering, am I the only one who cannot get my bluetooth radio to hook up to paired devices easily?
The problem is, I always have to ask to connect manually; this is a bit of a pain, especially after turning off my car, say, for a few seconds. Oh, it'll connect, but sometimes it takes 10-15 tries before that connection is made, and even then, it's often after I have to disconnect then attempt to reconnect a few times because it doesn't connect both the phone and media modes.
Click to expand...
Click to collapse
Is it *ALL* bluetooth devices, or just the car? What model and year car? Are you connecting to the Hands Free profile, Headset Profile, or doing something like A2DP for music streaming?
How long have you had the phone, how long has this been a problem? Has the symptom ever changed?
Keep in mind, just because your HTC phone connected to the car just fine, doesn't mean the car could not be the issue. While the Bluetooth profiles and protocols should be "standard" I've seen many issues of interoperability issues between bluetooth devices over the years. Especially with car kits.
KidJoe said:
Is it *ALL* bluetooth devices, or just the car? What model and year car? Are you connecting to the Hands Free profile, Headset Profile, or doing something like A2DP for music streaming?
How long have you had the phone, how long has this been a problem? Has the symptom ever changed?
Keep in mind, just because your HTC phone connected to the car just fine, doesn't mean the car could not be the issue. While the Bluetooth profiles and protocols should be "standard" I've seen many issues of interoperability issues between bluetooth devices over the years. Especially with car kits.
Click to expand...
Click to collapse
Guys, thanks for staying with me on this. One thing I've definitely learned is that the bluetooth thing is something I'm pretty ignorant on. I can see that I'm going to have to study it a bit before too long. Gad, that HTC spoiled me rotten---at least in that way.
I haven't tried the phone with any other BT devices. This is mostly because I don't own but two, the car and a travel speaker, and I haven't had the speaker out of its case since I scored the phone six or eight weeks ago. Also, I did some housecleaning, so I have only a small fraction, maybe 20%, of the same apps on the MotoX that I had on the HTC. I have no apps on the MotoX that I didn't have on the latter.
As for some of the car-related suggestions, it's a 2015 Subaru Forester Premium 2.5i, which is really only level up from the base model of that line. I can't find that there is a bluetooth profile setting in the car that I can change; I think that it's too basic. The relevant user manual simply states the following:
Media format
Bluetooth audio devices cannot be
connected if they are not compatible with
the following Bluetooth® profiles.
. A2DP (Advanced Audio Distribution
Profile)
. AVRCP (Audio/Video Remote Control
Profile)
I don't even know what either of those mean!
Anyway, what I did do is go to the phone settings, and uncheck the Media box that shows up once the car's BT server is detected. Then I try to connect with the Phone box checked. It'll still fail to connect several times, but (a) it doesn't take as long to fail to connect, (b) it doesn't take as many tries (it seems) to make the connection, and (c) when it fails, it fails totally, so I don't have to disconnect from 'Media-only Connected (No Phone)' connection. That makes it easier I suppose. Then once the connection is established, it's a simple matter to go back to settings, and check the Media box. That add-on connection happens pretty quickly, but the process is still a little overwrought, imo.
Of course, KidJoe, up until you mentioned a Headset Profile, I didn't know one existed. But when I try to play music on my phone using PowerAmp, well, the app doesn't hook up to the BT anyway. That's a key difference between the HTC and the MotoX. In PowerAmp, I have "Play over Bluetooth on Detection" selected. The headset isn't being detected at all. So maybe that goes some distance to explaining what I'm encountering.
Again thanks to both of guys for hanging in there with me! I'll keep trudging "onward through the fog," as it were...
cheers,
john
A2DP and AVRC are used for Bluetooth Stereo audio streaming (like playing Pandora on your phone via your car stereo). Not phone calls.
For phone calls, usually a Headset or Handsfree profiles are used, and sometimes BT Phone Book Access (so you can see your phone's contact names/numbers on the car's screen).
I've run into compatibility issues between some phones and some Headset/Handfree devices (mostly cars, but a few bluetooth headsets too). Often times when this happens, you're stuck. Each side will blame the other (i.e. Moto will blame the Subaru car stereo, and Subaru will blame the phone).
I have had issues re-connecting to my car (a 2011 Saab 9-4x with Bose/Nav), IF I had my Moto S11 Flex HD headset connected to my Moto X before I got in the car (even if the S11 was powered off/disconnected from the X before I started the car). Usually toggling the X's bluetooth off/on, and sometimes worst case rebooting the phone, has always fixed it.. Another time I had troubles connecting to my Saab's car kit was when my wife was using her phone to stream audio. The next time I got in the car, I had to manually connect my phone. The car always tries to connect to the the last phone used, so it was looking for my wifes and it took a while before it timed out. When it did time out, it didn't look for mine.
Since you have a 2015 Subaru, I would consider visiting your car dealer, ask them to help with pairing the phone properly, and making sure its working right. See what they have to say.
My bluetooth in my car stopped pairing the other day, and it turns out it was an app that updated and requested permissions related to bluetooth. I didn't notice them because it's an app I trust so I accepted the new permissions without really looking at it.
I used App Settings (Xposed module) to disable the permissions and my bluetooth works fine again.
I could still pair with things if I went to the bluetooth paired device list and manually tapped on the device I wanted to connect with, but it would not pair automatically (like when I got in my car). Once I disabled that permission, it started working again without issue.
May be worth a look through your installed apps to see if anything has access to bluetooth and may be interfering.
Hey All,
Thanks again for the continued help!
It's true, I didn't do any research on app interference before I posted this thread topic, but since a couple of you have brought it up, I decided to do a little research. I installed a permissions app, and took a look at the permissions that allows an app to automatically seek out, and pair with, Bluetooth servers. I have to admit, I got some surprises there. (Who would've thought that Beautiful Widgets needed that permission; it is now gone.)
Anyway, most of the remaining apps are either system/Moto-related, or ones I would really like to keep. I'll report back on what I learn. If there are other permissions that I need to reference besides the two pairing-connecting to Bluetooth ones please let me know...
cheers,
john

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