Develop Bugs

no sound after bluetooth unpairing

Hi, I have been searching and can't seem to find anything on this. My wife's and my epics pair, and work, great with with our car stereos (clarion). but, when we get out of the car, and the phone unpairs, we have no more system sounds. we miss calls and texts because we never hear them. the sounds now only come out the ear piece. Only a reset corrects it and then we hear sounds from specker again. Of coarse until we get in the car, and it all starts over again.
any ideas? I'm stumped.
thanks!

have you tried turning bluetooth off entirely when u leave the car?
also are you using any applications to send media with bluetooth such as BTmono?

I have the same problem -- as does my wife. I'm using a Motorola BT in the car, but it seems to be a problem with any BT connection as she primarily connects to our BT phone connection in the house. I saw this problem mentioned in a couple other threads, but no real solutions other than things like turning off BT on the phone before disconnecting, etc. Frankly, that's a hassle and I never remember to do it. I was hoping the latest version of Syndicate ROM might fix it, but just had it happen again this morning. So, I can confirm it's a problem on both Froyo stock and Syndicate ROMS. At least it seems like rebooting is a bit faster on Syndicate, so that's my solution for now as soon as I realize sounds aren't coming through. Just gotta remember to check before I miss a call!
Sent using Tapatalk.

thanks for the replies. I am not using anything that starts to stream to the car stereo. Music player use to, but I removed it. I did notice today that the specker sound loss only happens if i make/receive a call. Today I drove to store and while in store away from car sound was fine. got back to car, called wife, and then when I was at home sound was gone. I will try to toggle off BT before phone is unpaired. what a pain.

Wouldn't ya know I found a thread about this after I post this.
http://forum.xda-developers.com/showthread.php?t=1029198

This post has worked for me: thanks mattallica76. I had to be in car paired to do this.
http://forum.xda-developers.com/showpost.php?p=13102385&postcount=31
This problem is a bug that exists while using Bluetooth on a device for both ad2p and phone calls. The only workaround (until Sammy or one of our great devs comes up with a fix) is to use the BT device for one or the other. This will prevent the audio from being routed to the phones earpiece after BT disconnects. To do this, go into the phones BT settings. Then long press the device that you are having trouble with. Next uncheck "Media Audio" or "Phone Audio", depending on which purpose you want for the device.

[Q] bluetooth audio issues - intermittent

Hey everyone. Gotta say, i love this phone its the android device i always wanted. However, im having issues with my car bluetooth which i have not experienced before... namely, that random phonecalls sound completely digitized.
Ive come from an htc desire and htc sensation on the same car without issue and am worried i got a bad BT antenna-or its software...
Anyone out there experiencing the same thing? Any advice (other than buying a new car)?

I am having the same issues on a Verizon Galaxy Nexus V4.02. If I turn bluetooth off mid-call the earpiece sounds fine. The static only happens during voice calls, streaming A2DP sounds fine. There are bluetooth improvements listed in the 4.03 changelog, hopefully this will be resolved.

I had some problems with my BT speaker phone. I turned off the key press sounds and the screen off sounds and that pretty much fixed it.

I have an off topic question for you guys that use bluetooth streaming. Can start the car and press play from the HU to start music? I can with my old D2, but not my TB. I have to actually start the music player on the thunderbolt, then I can control it from my HU. I would like to upgrade, but I don't see a huge advantage in upgrading if I still can't start my music without having to actually take the phone out of my pocket. (Yes, I know it's stupid, but I'm lazy.)

I have this same issue in one of my cars. I ran a number of tests and the issue only occurs on my vehicle when the phone is connected to both for telephony and a2dp music. The static occurs whether or not a2dp is actually being used to stream music or not. This particular vehicle has two separate devices for music and telephony. If I unpair or disconnect the music device, then telephony works without the audio distortion. As soon as I reconnect the music device, the static is re-introduced.
v0yeur said:
Hey everyone. Gotta say, i love this phone its the android device i always wanted. However, im having issues with my car bluetooth which i have not experienced before... namely, that random phonecalls sound completely digitized.
Ive come from an htc desire and htc sensation on the same car without issue and am worried i got a bad BT antenna-or its software...
Anyone out there experiencing the same thing? Any advice (other than buying a new car)?
Click to expand...
Click to collapse

I am experiencing this issue as well and have not been able to resolve it. I've tried disabling the touch sounds, screen off sounds, etc. but to no avail.
It pretty much makes handsfree unusable while driving. What have you guys done in the meantime? Have you been able to resolve the issue yet?
Here's my specific details:
Phone: Verizion LTE Galaxy Nexus v4.02 stock/unrooted
Handsfree Car System (phone audio): Stock 2007 Audi A4
Separate A2DP Module (media audio): Dension Gateway Five connected to factory Stereo
All of my previous phones (Thunderbolt, Droid X, Incredible, OG Droid) have fully supported this setup with no issues whatsoever.
On a sidenote, my A2DP streaming is also unreliable. It first has trouble connecting to the device. If/when it does, audio constantly cuts out when streaming Pandora, Slacker Radio, Google Music... pretty much any streaming over network connection. I have not tried locally stored music yet as I don't have any currently stored on my device. Are you guys experiencing this A2DP issue as well?
I wonder how widespread this is and if it warrants opening an official issue with Google.

I used to have a Blackberry Torch, and I have a Ford Mustang. When I would connect the BT to it, if the Wifi was on, it would "interfere" with the signal. Turning wifi off, fixed the issue. This was a widely known issue with the Torch. Granted that shouldn't have to be a fix, but can any of you verify whether your wifi is on? (regardless of if its connected to anything or not). I'm wondering if the Nexus is using the same BT/WIFI chip that the Torch used.

radi0chik said:
I used to have a Blackberry Torch, and I have a Ford Mustang. When I would connect the BT to it, if the Wifi was on, it would "interfere" with the signal. Turning wifi off, fixed the issue. This was a widely known issue with the Torch. Granted that shouldn't have to be a fix, but can any of you verify whether your wifi is on? (regardless of if its connected to anything or not). I'm wondering if the Nexus is using the same BT/WIFI chip that the Torch used.
Click to expand...
Click to collapse
I appreciate the suggestion but unfortunately, I have the issue even if WiFi is off (I never use WiFi).
I'm going to try and toggle a few of the sound and haptic feedback settings a little more to see if it's pertinent to a certain on/off configuration. It's a shot in the dark but I'll try anything at this point.

ok it was worth a shot. Maybe on a whim turn off 3g/data so basically its airplane mode except BT is on? Just to eliminate any RF interference. Other than that I dont know

Spent quite a bit of time in the car today to try and pinpoint a cause and I have had no luck.
Phone audio will sound great and then all of the sudden turn digitized and distorted for a random period of time, then revert back to sounding great. One thing to note is that the distortion is both ways - the person I'm talking to also hears it when I speak and cannot understand what I'm saying. It's very frustrating not being able to use this feature.
I am on my 2nd replacement phone and ALL of them have had this issue (returned two others to VZW due to this issue and the speaker clicking issue). I am still wondering if it is software/OS releated or if it's due to poor hardware.

Quick Update (kind of):
I messed around with more settings last night. I am happy to report that after I disabled NFC last night, I made several handsfree calls in my car with perfect clarity and no issues. Also, A2DP streaming Pandora worked flawlessly! I was happy that I thought I pinpointed the issue - NFC interference.
BUT this morning, I made a handfree call and it was immediately distorted. Frownie face! A2DP Streaming Pandora still worked great. I am now trying to determine if my success last night was a fluke or if something is different with the phone this morning. The only difference from last night to this morning, that I have been able to identify so far, is I now have the extended battery in the phone. Last night's success had the standard battery. I'll switch them back at lunch and re-test.

Stowegy said:
Quick Update (kind of):
I messed around with more settings last night. I am happy to report that after I disabled NFC last night, I made several handsfree calls in my car with perfect clarity and no issues. Also, A2DP streaming Pandora worked flawlessly! I was happy that I thought I pinpointed the issue - NFC interference.
BUT this morning, I made a handfree call and it was immediately distorted. Frownie face! A2DP Streaming Pandora still worked great. I am now trying to determine if my success last night was a fluke or if something is different with the phone this morning. The only difference from last night to this morning, that I have been able to identify so far, is I now have the extended battery in the phone. Last night's success had the standard battery. I'll switch them back at lunch and re-test.
Click to expand...
Click to collapse
I've got the same issue. Even with NFC disabled. Makes listening to Pandora in the car unbearable. I've gone through the same steps as you, but hasn't exchanged the phone yet. I've had previous Androids and it was a hit/miss with the distortion, but with an iPhone or BB never had this issue. Go figure.

thanks to all the replies, will update to 4.0.3 and try out some more options.
- unplugging my music dongle had no effect on call quality
- NFC on or off had no effect
I also find that the music adapter never auto-connects and needs me to go in to the BT settings page and manually select it.
thanks all.

Hello again. So I have an update that adds to the flakiness ...
Updated to the Bugless Beast ROM and Franco's kernel. My intent was to completely reset the phone and hopefully get a new Bluetooth stack in the process.
Initially everything paired OK, but after a while my audio randomly disconnects after about 20minutes and then reconnects depending on its mood.
My phone connection is more controllable now: if the BT is enabled on my phone when I turn on the car, the sound quality is entirely digitized and unusable. If I turn on the car and THEN enable my phone, the sound quality is flawless every time.
Still not ideal, but manageable. For the music audio part, I lay the blame entirely on the Audi Music Interface BT adapter: the thing is crap and always in pair mode even with the car turned off! The telephone BT in the car head unit has seen several phones pair with it without any issues (I do mobile development so I get to play with many phones) so in that case, I can't blame anything but the Nexus.
I really hope someone at Google or Samsung reads these threads since it would be tough to troubleshoot, but there's no doubt an issue exists with general BT compatibility.
Sent from my Galaxy Nexus using xda premium

Anyone have an update on this issue? Does anyone know of a ROM with a different Bluetooth stack than AOKP? I love everything else about AOKP. I have had the same garbled bluetooth audio from stock - 4.03 with franco and faux kernels with the same result. I had similar problems with Cyanogen 7 ROM I was using on my Incredible the week before I bought the Nexus.

Update - I experimented with a couple of additional devices, and the multiple connections problem with my Nexus is limited to A2DP only devices.
I am now using a Garmin BlueTrip with "phone audio" deselected in bluetooth options. As long as the additional bluetooth device is handsfree profile capable, the A2DP functions perfectly, calls are clear, and the device reconnects after a power cycle consistently. I'm glad this appears to be a software issue and not something we will have to live with for the life of the phone. I'm sure a future update will correct this issue.

I'm also having a problem with Bluetooth calls sounding very digitized and/or choppy. It is bad enough that it can be extremely difficult to make out what the caller is saying. A2DP, on the other hand, has performed pretty flawlessly and the device consistently reconnects each time I get in the car (although it can take up to 30 seconds or so).
I'll have to do a little experimenting with some of the settings mentioned in this thread to see if they have any affect.
On a related note, I feel like sometimes calls made/recieved on the handset can sound digitized as well (although not nearly as bad as over bluetooth). Has anyone else experienced this?
My hardware is:
Verizon GNex (4.0.2)
Parrot MKi9000

Having issues with Bluetooth and my car radio...

I was able to pair the Note 2 with no problem. The MP3s played ok through bluetooth. I could not hear Pandora and the hands free calling owuld not work. I then turned the car off and then back on and it started working. I then went inside for a while..came back out and it now doesnt work. It shows that the head unit is connected, but nothing but MP3 will work. I have an Alpine 133BT. My old Iphone 4 worked flawlessly. Anybodt having issues or know what it could be?

Car bluetooth is often very flaky. If its an oem radio sometimes the dealer can update the firmware on newer vehicles to fix bugs. Many, many people have problems connecting to their different cars because each implementation is different. Try these and see if it helps with the disconnects.
https://play.google.com/store/apps/details?id=a2dp.Vol
https://play.google.com/store/apps/details?id=com.phk.bluetoothfixrepair

Same issue
I'm having the same issue. It pairs just fine and plays over my stereo so long as I control everything using the phone. I can't start/stop bluetooth using the stereo or my headphones, though.
With my iPhone I could go from headphones to my car without ever taking the phone out of my pocket or losing my place in my audiobook. I tested with a Nexus 7 and it works also...neither the Nexus 7 or Note 2 display track information, though.

[Q] Problem with Bluetooth headphones and YouTube buffering

Does anyone have a problem with constant buffering when playing YouTube videos (especially HD videos) from the YouTube app while having Bluetooth headphones (or speakers) connected?
This problem seems to only occur when I use Bluetooth and wifi together, as this problem does not happen when I use wired headphones or view videos stored on an SD card. But I can stream Spotify audio while using the Bluetooth headphones without any problems. This makes me think that my wifi connection is slowed down when the Bluetooth headphones are connected, and YouTube videos keep buffering because the tablet cannot download the video fast enough. Is my tablet defective or is this a common bug on the Samsung Note 10.1 2014?

I also have problems with YouTube app...even without bluetooth on. I also have this problem with other bluetooth devices, like my bt keyboard and mouse....
Sent from my SM-P600 using Tapatalk

Have you ever reset your bluetooth headset or speakers. It happened to me a couple time. Couldn't connect but after reset my bluetooth devices. It connected and work again. Also sometime my bluetooth headset is connecting to my phone and I m trying to connect it to my note 10.1 2014.
Sent from my SM-P600 using Tapatalk 2

manoscello said:
I also have problems with YouTube app...even without bluetooth on. I also have this problem with other bluetooth devices, like my bt keyboard and mouse....
Sent from my SM-P600 using Tapatalk
Click to expand...
Click to collapse
It seems there are some definite issues with bluetooth and this tablet and/or Android 4.3. I've noticed that my headphones disconnect from the tablet if no data is being sent to them for a minute or so, which seems to be similar to the common problem of bluetooth keyboards disconnecting fairly quickly. Although this problem isn't as big of a deal with bluetooth headphones, since data is constantly sent to the headphones.

jimaginet said:
Have you ever reset your bluetooth headset or speakers. It happened to me a couple time. Couldn't connect but after reset my bluetooth devices. It connected and work again. Also sometime my bluetooth headset is connecting to my phone and I m trying to connect it to my note 10.1 2014.
Sent from my SM-P600 using Tapatalk 2
Click to expand...
Click to collapse
I tried resetting my headphones, restarting the tablet, turning bluetooth and wifi on and off, but the problem still occurs. My headphones connect just fine to the tablet, and I can see in the bluetooth popup on the tablet that my headphones are connected. I can also stream any audio or video that is stored on the tablet without any problems, as well as stream audio to the headphones. The only thing I can't stream is YouTube videos. Also, these headphones work fine with the other devices I tried them on.

CallistoRising said:
Does anyone have a problem with constant buffering when playing YouTube videos (especially HD videos) from the YouTube app while having Bluetooth headphones (or speakers) connected?
This problem seems to only occur when I use Bluetooth and wifi together, as this problem does not happen when I use wired headphones or view videos stored on an SD card. But I can stream Spotify audio while using the Bluetooth headphones without any problems. This makes me think that my wifi connection is slowed down when the Bluetooth headphones are connected, and YouTube videos keep buffering because the tablet cannot download the video fast enough. Is my tablet defective or is this a common bug on the Samsung Note 10.1 2014?
Click to expand...
Click to collapse
Unfortunately this is a known bug in Android. I am no expert and after doing some light research along the web, I am still not sure if the main problem lays on a physical interference between Bluetooth and the 2'4 GHz wifi signal, in software or in a combination of both.
Some video about this issue: https://www.youtube.com/watch?v=LbB7H0kk5MU&feature=youtube_gdata_player
I asked a similar question in a "forever alone" post when I faced this problem for the first time with my S4. You will find the link to an informative thread about this topic:
http://forum.xda-developers.com/showthread.php?p=45227610
Fortunately my GN 10.1 2014 performs very well (no noticeable interference), but I think that my new router, with a wider wifi signal range, did the magic. In theory a 5GHz wifi signal has no interference with the 2.4 GHz Bluetooth signal.
I hope it helps
iiSo say we all!! from my SM-P6OO

inolvidable said:
Unfortunately this is a known bug in Android. I am no expert and after doing some light research along the web, I am still not sure if the main problem lays on a physical interference between Bluetooth and the 2'4 GHz wifi signal, in software or in a combination of both.
Some video about this issue: https://www.youtube.com/watch?v=LbB7H0kk5MU&feature=youtube_gdata_player
I asked a similar question in a "forever alone" post when I faced this problem for the first time with my S4. You will find the link to an informative thread about this topic:
http://forum.xda-developers.com/showthread.php?p=45227610
Fortunately my GN 10.1 2014 performs very well (no noticeable interference), but I think that my new router, with a wider wifi signal range, did the magic. In theory a 5GHz wifi signal has no interference with the 2.4 GHz Bluetooth signal.
I hope it helps
iiSo say we all!! from my SM-P6OO
Click to expand...
Click to collapse
Thanks so much for the info and the links! I didn't realize that this was a known Android issue. I hope Samsung or Google can fix the issue in the future, although it seems like it has been occurring for at least a year, and it is not clear if it is a software or hardware issue. I'll try using a different router next. My current router is pretty old and doesn't support 5 Ghz, so :fingers-crossed: I'll be able to use bluetooth headphones and watch Youtube videos together.
Thanks again.

bluetooth, wifi conflict bug
manoscello said:
I also have problems with YouTube app...even without bluetooth on. I also have this problem with other bluetooth devices, like my bt keyboard and mouse....
Sent from my SM-P600 using Tapatalk
Click to expand...
Click to collapse
I have had the same problem with a bluetooth keyboard and mouse not working correctly, I found if I turn off the wifi radio on p600 I have up to 3 co current bluetooth connection going at he same time. when the wifi is on and active the bluetooth is dropping off think it has to do with wifi 4.0 radio in the tablet or the placements of the attennas in the tablet.

Same thing here
I'm having exactly the same problem. When I connect my p600 tablet to my bluetooth speakers the wifi stops working after a couple of minutes while using my tplink router. If I use my dlink router the wifi speed is greatIy reduced, I can still play "tune in radio" but the conection its to slow for youtube.

Issue RESOLVED on Windows 10 PC
I was having this problem and was breaking my head trying to understand why this was happening...I tested a set of Bluetooth headphones that had no mic and they worked fine, it was only my Bluetooth headphones with a mic when this would happen.
After so much troubleshooting I found that my Bluetooth headset was registering as both a headset and headphones and Windows was enabling the "headset" as the default communication device and the "headphones" as the default playback device. When both were active it made all streaming online videos buffer and never play.
When I disabled one of them the videos started to playback fine after one of the devices was disabled. Hope this helps in some way but I think it is the way the Bluetooth headset is registering as two different devices and causing a conflict. I wouldn't know how to fix this on a Galaxy Note but there may be a setting in Bluetooth connections where you can see this happening in Android like it does in Windows.

inolvidable said:
Unfortunately this is a known bug in Android. I am no expert and after doing some light research along the web, I am still not sure if the main problem lays on a physical interference between Bluetooth and the 2'4 GHz wifi signal, in software or in a combination of both.
Some video about this issue:
I asked a similar question in a "forever alone" post when I faced this problem for the first time with my S4. You will find the link to an informative thread about this topic:
http://forum.xda-developers.com/showthread.php?p=45227610
Fortunately my GN 10.1 2014 performs very well (no noticeable interference), but I think that my new router, with a wider wifi signal range, did the magic. In theory a 5GHz wifi signal has no interference with the 2.4 GHz Bluetooth signal.
I hope it helps
iiSo say we all!! from my SM-P6OO
Click to expand...
Click to collapse
thanks this saved me some efforts...I am facing this issue with my Sony TV and Bluetooth speakers.. so was wondering how did it work before and started facing issue now. When I switched to 5G WiFi the issue got resolved. So previously when it worked I must be in 5G WiFi and face this issue when on 2.4G WiFi

Question Pixel 6 pro Bluetooth issue...ice crashing

Been having problems with the blue tooth crashing my car stereo during a call... After a few minutes it completely crashes the head unit.
Phone has been changed and problem persists..
Ice is fine with p4,p4a,and p3 phones. Toyota touch ice.
Safe mode doesn't make any difference..
Now I may have found the issue...
I was talking on the phone thru Bluetooth on using the ice.
I wasn't moving in the car and the Bluetooth didn't crash the ice...
So I suspect the issue is on the call side and how the phone is dealing with phone signal and changing phone transmitters when driving which is affecting the Bluetooth side.
I will add streamed music via Bluetooth is fine when driving.
Anyone else having a similar issue ?
Any of the XDA god's got any thoughts..
Google help have suggested I change the phone a 3rd time....
Tia paul

I have not had this issue yet. I do use wired Android Auto (in my Subaru) all the time, which I believe still uses the Bluetooth for the calls as normal - however, I'm not certain I've been on calls long enough while driving to necessarily trigger the issue.
Might take someone's experience with using it with a Toyota setup similar to yours to report back more useful feedback, since different car manufacturers are notorious for having different Bluetooth experiences.