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.
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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.
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!
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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.
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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?
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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.
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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.
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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!
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Since I updated my Moto X 2014 from Lollipop 5.0 to 5.1, the connection between my phone and the sound car isn't possible anymore. After 15 - 20sec the car sound turn off and back in safe mode. I've tried reset the bluetooth, disconnect, but none of this worked.
Someone has a clue?
Thats strange,
Mine has started doing the same thing. Just upgraded to 5.1.
Bluetooth connects fine, then after about 20 seconds, the car stereo just reboots.
I thought it was an issue with my stereo, but maybe not, as its happening to you too, and only started after updating our MotoX's.
I will have a play with my stereo after work tonight! How odd!
I dont have stereo bluetooth for music, just for calling. Mine did the same thing. Even freezing my car stereo to the point where it stayed on even after i locked the car. Strange. I fixed it by deleting the connection from my phone and stereo then reconnecting the two devices again.
In time:
Today I saw a old post about another bluetooth issue. In it, they say to reset the phone in safe mode.
"just to isolate any app causing the stutter/cutout's ,try using the phone in 'safe mode' - https://motorola-global-portal.custhelp.com/app/answers/prod_answer_detail/a_id/97327/p/30,6720,9050/kw/safe"
I reset the phone in safe mode and connect it to car stereo. Worked perfectly.
I just reset the phone again and the bluetooth now is working normally. I hope it continue in this way
Thanks for the tip!
I deleted the car stereo in bluetooth settings (forget connection), then re-paired the two devices. It seems to work OK now.
Very odd though...