Bluetooth not streaming music to a car head unit after update to 12.2.4.0 (RJKEUXM) - Xiaomi Poco F2 Pro (Redmi K30 Pro) Questions & Ans

I can pair and use the car head unit as a handsfree set, but I can't stream any music (poweramp, internet radio). I tried different AVRCP settings in the developer options menu, but nothing seems to work. Has anyone experienced the same problem? It worked perfectly with Android Q, but stopped working after update to Android 11.

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A2DP stopped working

Hi,
Yesterday, I installed a new car stereo and after a lot of frustration installing it, I was happily surprised the A2DP worked by default, just paired my touch pro with my stereo, start playing in wmp and it comes through my stereo system. However during the day I started looking for another player to use (during my breaks of course ) and installed pocket music player bundle ( I don't know if it has anything to do with my problem, just trying to include as much info as I can ). In the evening I enabled bluetooth of my phone again, I think I also had the headphone logo, but when trying to play using pocket music player and wmp, it always just used the speaker of the phone and didn't seem to send anything through A2DP.
Any idea how this can be? Is there a setting somewhere to change what audio is used (A2DP/Speaker/ whatever...)?
TIA!
OK, this seems to have been quite stupid.
Haven't been in my car since, but same behaviour with my logitech a2dp bluetooth headset.
Going into bluetooth settings, "right click" on logi_stereoV01 and "instellen als draadloos stereo" (set-up as wireless stereo) did the trick, probably the same for my CAR--BT,sorry for the stupid post.
Although it would be nice if the touch pro would automatically set the detected bluetooth device as wireless stereo every time, just as it seems to do for setting it headset when in range while turning on the bluetooth.
Sorry for the strange sentences... it was a long day
same problem
i just bought a bluetooth receiver for the car.
it fits in the lighter place and transmits via FM to the car radio.
My htc connected staight away (no code required to me) with the new "car Kit" found, but whatever i try i always have the sound from the htc speaker...
How can i solve this?
Thanx in advace.

All Media Except Pandora Play Through Bluetooth

Running Codename Android
I set up my phone to play through a Bluetooth stereo dock and at first BeyondPod wasn't playing through it but Google Play music was. BeyondPod Started playing through the speakerphone instead. When I realized Play Music was working I opened up Pandora and it also played through the Bluetooth.... until the first song ended and it switched over to the speaker phone. Oddly enough, BeyondPod then started playing through bluetooth. I rebooted the phone and now Pandora is permanently playing through speaker phone only. I downloaded and used BT mono, which caused Pandora to play through Bluetooth with a 15 second delay, but when I shut it off it played through Bluetooth perfectly! I rebooted my phone and it is back to speaker phone only. Now BT mono does not affect it at all.
Summary of what I have tried:
Two separate Bluetooth devices, same behavior
BT mono app, worked at first (crappily) but now has no effect.
Multiple reboots, cleared data and reinstalled Pandora, no effect.
Unchecked and recheck BT setting in Pandora, no effect.
The Bluetooth devices are set to "media" in the bluetooth setting, and one of them was set to "media" and "Phone"
Is this a ROM issue? I love this rom... Any other ideas? I don't think it is a problem with the bluetooth devices considering every other app works fine.
Ok so to add to the mystery, I just tried Double Twist, and it did exactly what pandora did. It played the first song through Bluetooth, and when it cycled to the next track it went to speaker phone. Now I can't get Double Twist back to Bluetooth.
IF anyone is following this, I have found that if I enable BT Mono, the sound stops playing from the speaker, and when I disable BT mono it start playing through Bluetooth.
So just a toggle on and off and it randomly works, sometimes it does nothing though. It's incredibly inconsistent.
Could this be a kernel issue?
Appears to be a general CM10 issue. Sorry.
Not sure what the issue is but I have a Samsung Galaxy Nexus with the same issues. I'm trying to find a fix but nobody knows what is going on. I saw on other forums someone referencing the AVRCP version with new builds. Not sure if this is it or not. But I have a 2011 Toyota Camry it will not pair with for Pandora, YouTube, etc... Google Music works but that's it. And I can replicate your issue. If music is playing, I can hear notifications but if it isn't I don't hear anything.
Not sure if this will work for you but it worked for my HTC One and 2011 Sienna:
Launch pandora
Launch Google Play Music
Under Manage apps, select Google Play Music and stop it.
Sometimes Pandora starts streaming at this point.
If not, select Pandora from Running and stop everything under it.
Restart Pandora and it should stream now.

Bluetooth Controls

I can't control my music player via Bluetooth. No pause/play/fwd/rev. Some issue for both Pairs of headphones and my bluetooth car radio. Audio p,as fine just no way to control it from the connected device.
Is it working for anyone else?
Sent from my SM-T710 using XDA-Developers Legacy app
I'm listening right now to Bose QC35 and ev3rything goes fine. The player is neutron.
Search for options in your player ( settings)
For me, controls only work the first time you connect to the car. On the next drive, audio works, but not AVRCP functionality. Disabling and reenabling Bluetooth fixes it for one cycle.
Don't have that problem but maybe developer options and toggle "Disable absolute volume"? Might not work though because I'm not sure if the setting only covers volume controls or all controls but worth a shot
Do you still have this problem?
I had my S8 repaired and since then I can not control music when connected to BT. With my Sont MDR-1000X I can skip tracks and lower volume but unable to start/stop. In my car none of the controls work. Tried other headsets with the same result. Repaired everything.
Coming from a factory reset because of the repair I am not yet feeling another one. Anyone got tips?

After 8.1 update can pause but cannot unpause audio via LG Tone bluetooth headset

Both my wife and I have the Pixel 2 (non-XL) and both have LG Tone bluetooth headsets. I have the 810 model and she has the 820.
After receiving the 8.1 update, both of us can pause whatever audio is playing over the headsets using the headsets play/pause controls but both cannot unpause the audio from the headset.
This is pretty frustrating for both of us as we both tend to listen to a lot of audio books and it is a very common thing to do throughout a day to pause the audio then unpause.
What's interesting though is in my car (Honda Accord) I can pause and unpause without issue from the controls and in my wife's vehicle (Nissan Rouge) it works as well.
This would point to something specific with the LG's or they type of headsets or perhaps using a combo play/pause is the issue? In my car I have a separate button to play and to pause. In my wife's Rouge, it's on-screen touch controls, not a physical button.
Has anyone else run into this issue after receiving 8.1? Has anyone found any solutions to make it work again?
I have fully removed the headset and re-added it. I did a factory reset on my headset. Rebooted the phones a number of times. It will never unpause only but will pause the audio without issue.
Edit: I tried doing a "Reset Wi-Fi, mobile & Bluetooth" just to see if that helped and it did not reset any of my Bluetooth settings! I rebooted and tried again and it resets my Wi-Fi saved networks but my Bluetooth devices that have been or are paired persist. Has anyone else run into this?
I made a post over at Reddit about this as well.
https://www.reddit.com/r/GooglePixe...t_network_settings_pixel_2_nonxl_81_does_not/
Edit: I did a full factory image reinstall from the downloaded image via fastboot/adb and still have the same result.
I seem to be getting further by trying different combinations in the developer menu for the bluetooth settings. Now if the last used audio app is closed and I push play on the headset it will reopen that app. Prior to 8.1 it would do that and also start playing the audio from the last used app. It's a step in the right direction. I did find a workaround for my most used audio app which is Smart Audiobook Player under the troubleshooting settings to force pause/unpause which seems to work for just that app at least. I still cannot unpause music from the Play Music app or the Audible app though.

Android 12 no auto start music after wired or bluetooth headphones connect

Hi ppl
Since upgrading to OOS12 I can't get music (Spotify) to start after any kind of headphones connection. Car bluetooth, Cardo Freecom (helmet), wired earphones, bluetooth headphones, nothing. Sometimes I get lucky to start music pressing Next on connected device, more often I have to start Spotify manually and start playback.
Did factory reset (complete) twice, same situation.
I can't find switch to autostart player anywhere. It used to be in Sounds->earphones.
Any help?
Wait for the next updates of OOS12 which can probably fix this or revert to OOS11 where this feature worked.

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