Develop Bugs

O update and bluetooth audio

So I had been on the beta version since it was released and participated a few times in the thread here: https://forum.xda-developers.com/pixel-xl/how-to/android-o-beta-issues-t3609335 and others were having the same issue.
The issue is no song/artist information being displayed on my touchscreen stereo, and I cannot use the stereo to pause/skip to the next track (I have to do it through my phone). Ive tried a local audio player, Google Music, and Pandora all to no avail. The deck is a Pioneer double-din AVH-P8400BH.
In my daily car, my phone bluetooth name appears and I can change song ect thru the deck. It is not a touchscreen and it probably 10 years old.
Ive gone into the bluetooth settings and have tried changing the AVRCP from 1.4 to 1.6 (neither work), and audio codec from default to enable optional (neither worked).
Anything else I should try out?
TIA

Please add your experiences to this website... they currently have over 100 replies of this issue and some other Bluetooth issues. https://productforums.google.com/fo...eDphsoOJ4;context-place=forum/phone-by-google

I had the same issue, but a simple unpair and forget from both devices then repair fixed my problem

marcjc said:
Please add your experiences to this website... they currently have over 100 replies of this issue and some other Bluetooth issues. https://productforums.google.com/fo...eDphsoOJ4;context-place=forum/phone-by-google
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Click to collapse
Ill throw in my comments, thanks for the link!
mjc2251 said:
I had the same issue, but a simple unpair and forget from both devices then repair fixed my problem
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Click to collapse
Ill have to give this a shot!

mine has awful streaming. It has so many skips...snags...audio blanks...whatever term you want to call it....its not "uninterrupted".
I was hoping google IMPROVED Bluetooth. I don't understand why they have this struggle to be honest. Its 2017....Bluetooth is not new technology.
Maybe they should stop expanding their department to provide data to the government to spy on private citizens using smart devices, and they would use those resources to fix bluetooth

Pioneer brand head units in particular I have seen Bluetooth streaming issues when paired to flagship model phones for years...even back as far as my LG G3. I got a Kenwood head unit instead, never had an issue.
As far a the Pixel XL and BT streaming...I have only had issues with dropouts zap sounds or pops, when i am out mowing my back property with my tractor...phone in pocket and BT headphones on. But my previous phones did this...most certainly due to the railroad nearby and high rise high voltage power lines and towers that are above me in that area.

speedingcheetah said:
Pioneer brand head units in particular I have seen Bluetooth streaming issues when paired to flagship model phones for years...even back as far as my LG G3. I got a Kenwood head unit instead, never had an issue.
As far a the Pixel XL and BT streaming...I have only had issues with dropouts zap sounds or pops, when i am out mowing my back property with my tractor...phone in pocket and BT headphones on. But my previous phones did this...most certainly due to the railroad nearby and high rise high voltage power lines and towers that are above me in that area.
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Click to collapse
Pioneer uses a cheaper bluetooth and never updates the firmware of the chips to fully support the available Bluetooth profiles even when they are developing their units and new profile updates are available. I have had a very long and annoying history with them to the point where I was in direct contact with their build team after all my complaining. That was back in 2012. Never used another of their products again. :good:

I have the same issue on my Chevy Colorado 2017. Everything works fine on Spotify on my Huawei Mate 9, and iPhone 7. It also worked fine on 7.1.2. Spotify works and music comes through but no info is displayed. I unpaired both things with no success. Frustraring.

I tried unpairing mine as well, no luck either

stupidchicken03 said:
I tried unpairing mine as well, no luck either
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Have you tried unticking "media" in the profile hitting ok, going back in and ticking media again?

pcriz said:
Have you tried unticking "media" in the profile hitting ok, going back in and ticking media again?
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Click to collapse
I have not. Ill give it a shot today.

No idea if this problem is related or not but might be worth a check if you have time. First time I put Oreo on my phone it was fine. Then I screwed something up and just ADB flashed the image again. Everything was fine until I tried bluetooth a few days later. It wouldn't connect until ticking that media box many times. Then I flashed the image again and it worked fine again.

So I just got the 8.0 OTA (not on beta). I see in the dev options that it shows what BT codec it is using.
I have noticed that only the option "Bluetooth AVRCP Version:" is the only value that changin it does it stick. The other setting appear to be on auto and revert to auto depending on what device u pair supports.
My first test on my Kenwood KDC-BT762HD it paired fine and it said it was using AptX. Streamed for a few min fine. Then after I got back in the car and it auto paired, music started skipping every several seconds. I turned radio off then on to repair it and it started streaming fine again....but was using SBC according to Dev options.
When I changed AVRCP version to 1.6.....it connects and uses AptX fine. However, the radio display no longer displays the BT media metadata(title/artist), but the controls on the radio still work. I change to AVRCP ver 1.4 and that restores metadata, but then it uses SBC again. (using ver 1.5 results in SBC and no metadata).
I don't really care about the song info not being displayed on my radio....but definitely seems to be something fishy with BT in this new update.
EDIT Update: so now I am noticing it auto re-connecting and using SBC all the time now. WOnt use aptX unless i delete the device and re-pair it. then it works for a few reconnects, but then drops to sbc cagin.

Thanks for posting, I won't be updating. The Bluetooth has never been right and now seems to have regressed.
Sent from my SM-T280 using Tapatalk

i think i'm having slightly fewer drop outs with oreo than with nougat. my moto x pure on marshmallow was really bad.

FZ1Darren said:
i think i'm having slightly fewer drop outs with oreo than with nougat..
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i agree and although i dont get the proper song listing on my car stereo it seems everything else is better. on nougat my BT headset i use for work all day (moto buds) would often stop connecting properly and i would make a call and have to select "phone" then "headset" again to get audio back on headset and om Oreo it happens less frequently

fletch33 said:
i agree and although i dont get the proper song listing on my car stereo it seems everything else is better. on nougat my BT headset i use for work all day (moto buds) would often stop connecting properly and i would make a call and have to select "phone" then "headset" again to get audio back on headset and om Oreo it happens less frequently
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Click to collapse
If you switch to a rom that uses the CAF based bluetooth (all lineageos based ones should, crDroid does for sure as that is what I use) implementation this won't happen. Still haven't been able to track down exactly why, but for now I'm sticking with CAF based ROMs to avoid this.

Do any of you guys having this issue have an Android wear watch? I've had heaps of issues with Bluetooth streaming being all "jittery" and just skipping since the update. However, I found this is basically completely fixed when I turn my android wear (LG urbane) off, or at least the Bluetooth on it.
Tried all the developer options for BT but hasn't made a difference. At the moment, my solution is turning off BT on my watch when I'm listening to music. Bit crap but it works.
I have factory reset the watch and cleared BT cache on pixel.
Any other ideas?

Is anyone else still having problems with Bluetooth on Oreo? I was hoping the official 8.1 release would help me, but I'm seeing no change. I have a Kenwood BT952HD, and experience issues similar to what the OP describes. Audio is plays fine, no unreasonable stuttering. But I get no song info, and can't skip tracks. Also, the pairing isn't as automatic. Every time I turn on the car, I have to wake the phone up, and wait for the pairing to complete, which takes longer than usual.
I've tried playing with the AVRCP settings, along with clearing registrations at both ends and repairing, with no luck. Is anyone else still seeing similar issues?

8.1 working fine with my Kenwood BT762HD. I use PowerAmp v2 alpha build 704 app.

Android P Beta DP 4: Bluetooth Latency

Has anyone noticed any latency with Bluetooth headphones on DP4? I was on Oreo and previous DP3 and had no issues with my truly wireless headphones. Using Sol Republic Amps Air and Samsung IconX 2018 and they both now have Bluetooth latency with video, was not like that before. I tried changing the codec in dev ops, but for some reason, it keeps reverting to the same codec. Possibly an issue with the headphones not supporting every codec. But my challenge is this was not an issue before.
Looking to see if anyone is reporting similar issues or if I need to do some more internal investigation on my hardware.

Very strange that headphones that worked without latency, now have it with the latest DP. With my Bluetooth headphones and car system (which have never had latency) I haven't gained any issues with any of the DPs.
Sent from my Pixel 2 XL using Tapatalk

Androdi Pie and BT problems

Hi everyone!
When connect my phone to car radio pioneer mvh-s300bt via Bluetooth phone set automatically sbc codec. I have latest radio firmware, so AAC worked correctly on android 8.1. After update to 9.0 work only with SBC. When i try change it in developer options, setting are constantly return to SBC codec. I feel different between this codec and it is little annoying for my ears.
Please, help how can i fix it.
Of course, xiaomi developers doesn't read any notification from users, so i must do it on one's own.
Thanks for help.

No solution so far, afaik.
Facing the same problem, Mercedes 2019 and Volvo 2019 both default to SBC.
YouTube is out of sync when streaming via A2DP, video is lagging, audio working fine.
Stock MIUI 8.1 was even worse, playback was slow and distorted.

Bluetooth Headphones Issue

I have an issue with a new pair of bluetooth headphones i have just purchased. Specifically media playback sound quality. It is utterly woeful, with distortion, hiss, and cackles/pops continually over any media player or videos. Sound quality on calls is fine. I know that the headphones work, as i have used them on other devices and they function fine. My S9 is currently up to date.
I initially though that it was something to do with volume limiter as the weird thing is occasionally when they immediately connect and i play some music they work fine, then the quality drops as soon as the limiter notice pops up. I have checked though and the limiter is actually turned off. Turning it back on doesn't solve the issue either. I've gone so far as to wipe the whole cache partition and nuke all the caches, but that hasn't helped either.
Is there a known issue that I am unaware of ? Hopefully with a resolution, or other obvious steps i could try that people could recommend, as I am out of ideas now.

Spin_Dr_Wolf said:
I have an issue with a new pair of bluetooth headphones i have just purchased. Specifically media playback sound quality. It is utterly woeful, with distortion, hiss, and cackles/pops continually over any media player or videos. Sound quality on calls is fine. I know that the headphones work, as i have used them on other devices and they function fine. My S9 is currently up to date.
I initially though that it was something to do with volume limiter as the weird thing is occasionally when they immediately connect and i play some music they work fine, then the quality drops as soon as the limiter notice pops up. I have checked though and the limiter is actually turned off. Turning it back on doesn't solve the issue either. I've gone so far as to wipe the whole cache partition and nuke all the caches, but that hasn't helped either.
Is there a known issue that I am unaware of ? Hopefully with a resolution, or other obvious steps i could try that people could recommend, as I am out of ideas now.
Click to expand...
Click to collapse
i flip back and forth between a few different BT headsets and never have this issue and have also used the same headsets on several devices in my bag-o-tricks. The phone does use a DAC for music where its pretty raw for the phone convo, which could explain why calls are ok, but music isnt. Is this your only pair of BT headphones? Do you know anyone who will help you test them on another phone?

Spin_Dr_Wolf said:
I have an issue with a new pair of bluetooth headphones i have just purchased. Specifically media playback sound quality. It is utterly woeful, with distortion, hiss, and cackles/pops continually over any media player or videos. Sound quality on calls is fine. I know that the headphones work, as i have used them on other devices and they function fine. My S9 is currently up to date.
I initially though that it was something to do with volume limiter as the weird thing is occasionally when they immediately connect and i play some music they work fine, then the quality drops as soon as the limiter notice pops up. I have checked though and the limiter is actually turned off. Turning it back on doesn't solve the issue either. I've gone so far as to wipe the whole cache partition and nuke all the caches, but that hasn't helped either.
Is there a known issue that I am unaware of ? Hopefully with a resolution, or other obvious steps i could try that people could recommend, as I am out of ideas now.
Click to expand...
Click to collapse
I have that issue too.

youdoofus said:
i flip back and forth between a few different BT headsets and never have this issue and have also used the same headsets on several devices in my bag-o-tricks. The phone does use a DAC for music where its pretty raw for the phone convo, which could explain why calls are ok, but music isnt. Is this your only pair of BT headphones? Do you know anyone who will help you test them on another phone?
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Click to collapse
I do actually have another pair of bluetooth headphones i use for my PC, i will try them with the phone tonight, though I am sure that the headphones themselves are fine. They work with my watch without any issues.
Ugulp said:
I have that issue too.
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Click to collapse
I have experimented a bit more, and think that this is a codec issue. If I enable the developer menu, and switch to another codec (not the SDC if defaults to) them restart the headset they work fine. Problem is that it always defaults back to SDC whenever the headphones are disconnected for a period of time. I can't see how to force the use of another codec, both AAC and LDAC for example work absolutely fine with the headset. Though this is quite a long process just to get the headphones to work each and every time i want to use them.

Spin_Dr_Wolf said:
I do actually have another pair of bluetooth headphones i use for my PC, i will try them with the phone tonight, though I am sure that the headphones themselves are fine. They work with my watch without any issues.
I have experimented a bit more, and think that this is a codec issue. If I enable the developer menu, and switch to another codec (not the SDC if defaults to) them restart the headset they work fine. Problem is that it always defaults back to SDC whenever the headphones are disconnected for a period of time. I can't see how to force the use of another codec, both AAC and LDAC for example work absolutely fine with the headset. Though this is quite a long process just to get the headphones to work each and every time i want to use them.
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if im not mistaken, the default codec is controlled by the stack overflow. what version of android are you using?

youdoofus said:
if im not mistaken, the default codec is controlled by the stack overflow. what version of android are you using?
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From the software information screen...
Android Version : 9
Baseband Version : G960FXXU6CSG4
Kernal Version : 4.9.59-16381285

Spin_Dr_Wolf said:
From the software information screen...
Android Version : 9
Baseband Version : G960FXXU6CSG4
Kernal Version : 4.9.59-16381285
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Click to collapse
youre on the U6 bootloader, when did you last update and when did the bt sound issue start?

youdoofus said:
youre on the U6 bootloader, when did you last update and when did the bt sound issue start?
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Click to collapse
I last updated 02nd August 2019. I have just checked again, and apparently running the latest version available OTA.
I couldn't tell you when the bluetooth sound issue started, as this is the first time in a long time i have connected any bluetooth headphones to my phone. I think previously connected the other headphones i have yet to check again, but am not certain.

Spin_Dr_Wolf said:
I last updated 02nd August 2019. I have just checked again, and apparently running the latest version available OTA.
I couldn't tell you when the bluetooth sound issue started, as this is the first time in a long time i have connected any bluetooth headphones to my phone. I think previously connected the other headphones i have yet to check again, but am not certain.
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Click to collapse
gotcha. i also understand youre probably at work like many of us poor schmucks such as myself, which would make it kinda hard to test things out right this moment. But do any of your coworkers have a BT speaker you can connect to to try to replicate the issue there as well? Im mainly trying to eliminate variables at this point. You might try flashing the most current Odin files with the "HOME_CSC" as to not erase your user data. Itll over-write the code for the OS and so forth and nuke any software issues that might be causing this

I've now tested another set of bluetooth headphones and they work absolutely fine, they default into the aptX codec. Is that determined by what the device primarily works with ?

Spin_Dr_Wolf said:
I've now tested another set of bluetooth headphones and they work absolutely fine, they default into the aptX codec. Is that determined by what the device primarily works with ?
Click to expand...
Click to collapse
yes, the codec is changed by the DAC within the phone to be the best suited to whatever device its connecting to. What kind of headphones are you using that get the garbage sound? I have a pair of Tozo T10's, which are the off-brand individual ear buds from amazon for $50 and they sound very good. I also have a pair of maxsonic bluetooth buds which cost $17 that are connected to each other by a wire and they sound equally as good.

Bluetooth CRACKING/POPPING noises!

Hello everyone.
Since 2 months I know have this "strange" phenomenon that when I connect my Realme 6 Pro to my Bluetooth sound device of my choice, for the first few times connecting there are only popping/cracking noise sounds coming out. No music or anything relatable. After connecting around 5-10 times, it finally will play music (also it suddenly goes back to the cracking state when clicking around in youtube).
Bonus: most of the time (even if connected right and playing music) the microphone wont work in calls.
I cant fix this sh*t and it really bothers me a lot lately.
Hopefully someone can help, or else I´m going to throw this phone into the trash can... xD
Greetings.

My BT works fine for the most part, but sometimes it breaks up. I am really hoping it's just a software issue

Me too, for about 2 or 3 months now. Wasn't a problem before. Thinking I'll try factory reset soon, see if that fixes it.

Hey! I also have this problem and what i found is, if your Bluetooth audio support Aptx codec, it will enable option "Use High Quality Audio" in your audio bluetooth settings. Try to disable (it will use SBC Codec) and my problem disappear.
But, it really annoying. I already try my bluetooth audio with another phone and it worked fine with Aptx, so i know my bluetooth audio is not my problem. My workaround so far are disable high quality audio, then enable Aptx manually in developer options with AVCRP 1.6
Not sure if my device actually using SBC codec or Aptx after change it manually on developer options

Hi All! I solved problems with Bluetooth by switch off Dolby Atmos!

HeavyBrownCat said:
Hey! I also have this problem and what i found is, if your Bluetooth audio support Aptx codec, it will enable option "Use High Quality Audio" in your audio bluetooth settings. Try to disable (it will use SBC Codec) and my problem disappear.
But, it really annoying. I already try my bluetooth audio with another phone and it worked fine with Aptx, so i know my bluetooth audio is not my problem. My workaround so far are disable high quality audio, then enable Aptx manually in developer options with AVCRP 1.6
Not sure if my device actually using SBC codec or Aptx after change it manually on developer options
Click to expand...
Click to collapse
Hi! I solved problems with Bluetooth by switch off Dolby Atmos!