Bluetooth car streaming audio quality - Xiaomi Mi Mix 2 Questions & Answers

Hello,
I've got a new Mi Mix 2 and I'm having issues with bluetooth streaming in my car. I did not have this issue with other phones in my car so I'm thinking it has something to do with the phone.
I'm on stock MIUI 9.6 unrooted. Songs play without hiccups but the audio quality is terrible. Anybody else having the same issue?
Thanks.

I'm using bluetooth audio in my car all the time. Haven't used MIUI 9 for a long while so can't verify if that's the culprit, but it's working well on MIUI 10 global beta for me. Also working fine on custom roms like ABC, Omni, LOS.

I unlocked my bootloader and installed LineageOS. Everything is fine now. It must have been an issue with the MIUI rom.
Thanks!

Related

[Q] CM 10.1 headphones problem

i've just flashed the RC5 build of CM10.1. it's quite stable and almost as fast as CM7.
however when i was checking the features i found a problem with audio playback - the sound playing through the headphones is mono. it's the same in youtube, android music and every other app. i checked that with 3 different pairs of headphones with the same result.
i've also tried wiping user data and reflashing the rom.
i believe the same issue was present when i was testing CM9 some time ago.
has anyone else experienced this or is it just me?
In CM9, as far as I remember, it was solved by adding SRS to the rom...

Bluetooth audio stutter/skipping

This is incredibly frustrating. I had none of these issues with bluetooth on my S8+ whatsoever.
So one annoying thing that stood out was the bluetooth on this device. It keeps skipping and stuttering tracks whenever I play it on my Bose QuietComfort 35. It's normal on all my other wired cans but I usually use the QC35 alongside my phone during commutes.
Just to clarify, I'll list down all the "fixes" that I've tried. Obviously NONE of them fixed, or even alleviated the problem.
Cleared cache (this one just doesn't make sense imo)
Removed battery optimization on my music apps
Turned off WiFi & Bluetooth scanning
Switch Bluetooth audio codecs
Updated to 4.7.6
and PLEASE... if you DON'T have this problem, do NOT post how you DON'T HAVE THIS PROBLEM here, I'm looking for fixes, not jokes. Thank you.
I also have a QC35 and I don't have any issue but I post anyway
Joking aside I'm using 4.7.6 and my QC35's firmware is 1.3.4 and using the HBC codec.
What's your bose firmware ?
What do you use as a music player ? (I'm using the default Google Play music)
And what do you mean my "It's normal on all my other wired cans" ? Why would wired headphones have stutters ?
raptor2003 said:
I also have a QC35 and I don't have any issue but I post anyway
Joking aside I'm using 4.7.6 and my QC35's firmware is 1.3.4 and using the HBC codec.
What's your bose firmware ?
What do you use as a music player ? (I'm using the default Google Play music)
And what do you mean my "It's normal on all my other wired cans" ? Why would wired headphones have stutters ?
Click to expand...
Click to collapse
Everything's the same as you except I use PowerAmp as my music player and SoundCloud for streaming (both stutters/skips as well). I stated that I didn't have this problem on my wired headphones just to clarify.
I notice the problem most when I'm commuting and I have mobile data turned on. It went even more haywire when I downloaded something on Google Drive. Hopefully it gets addressed with Android Oreo and the official Bluetooth audio codecs being implemented.
Oh bad me I read the you said it was normal to have stutters while being red... Night too short.
I'll trying PowerAmp to see how it goes.
raptor2003 said:
Oh bad me I read the you said it was normal to have stutters while being red... Night too short.
I'll trying PowerAmp to see how it goes.
Click to expand...
Click to collapse
I think it has something to do more with the connections. It goes even bonkers when I'm moving around rather than laying in one place.
EpsilonT51b said:
This is incredibly frustrating. I had none of these issues with bluetooth on my S8+ whatsoever.
So one annoying thing that stood out was the bluetooth on this device. It keeps skipping and stuttering tracks whenever I play it on my Bose QuietComfort 35. It's normal on all my other wired cans but I usually use the QC35 alongside my phone during commutes.
Just to clarify, I'll list down all the "fixes" that I've tried. Obviously NONE of them fixed, or even alleviated the problem.
Cleared cache (this one just doesn't make sense imo)
Removed battery optimization on my music apps
Turned off WiFi & Bluetooth scanning
Switch Bluetooth audio codecs
Updated to 4.7.6
and PLEASE... if you DON'T have this problem, do NOT post how you DON'T HAVE THIS PROBLEM here, I'm looking for fixes, not jokes. Thank you.
Click to expand...
Click to collapse
I think I saw somewhere it's an issue with aptx HD, try to force Bluetooth codec in advanced settings to aptx or sbc.
vkass said:
I think I saw somewhere it's an issue with aptx HD, try to force Bluetooth codec in advanced settings to aptx or sbc.
Click to expand...
Click to collapse
I just said that switching Bluetooth codecs didn't work.
I'm having Bluetooth quality issues as well, particularly crackling and skipping. I noticed that if I download a file while streaming the quality will drop dramatically and the audio stream will crackle like crazy. I have tried all three codecs in nougat to no avail.
Should I upgrade to Oreo to get this sorted? Do custom kernels cause issues with the quality?
Thanks.
OnePlus 5t, theOne 7.1.1 (stock basically), viper4arise and Dolby
Update: when into EX Kernel Manager (specifically under the misc I/O settings), and change the I/O from ZEN to FIOPS. Not once has the music stuttered since, though I have only tested on SBC. If I get more results I'll bring them in.
Please note - I am on blu_spark, and I honestly do think it may have been the cause of the bluetooth skips/scratchiness. I turned off Dolby Atmos and Viper just to be sure.
Latest Oreo Beta build. Stream bluetooth, Pandora, iHeart and talk on the hands free no problems here. Lexus CT200h vehicle.
Would really check your cars manufacturer website. Most have a section where you can download latest firmware to a USB and flash your car to ensure you have the latest bluetooth firmware.
Working flawlessly on my car.
Anyone have any experience with the Oreo update?
Since updating to 4.7.6, I've experienced the following issues:
despite being connected to a bluetooth device, sound still comes out of phone speakers
static/distortion for a few minutes when initially connected to my car (2017 Chevy SS)
Upon connecting to car bluetooth, randomly the phone will call my phone number
I can usually fix these issues by either going into airplane mode for a minute or two or rebooting. Sometimes, I have to do this multiple times.
I've cleared cache but made no difference and I don't want to have to factory reset after every single update. Is it possible to flash factory images without nuking your data? You can do this with Google's Nexus/Pixel factory images.
I've got a different problem with 8.1 and BT audio. After upgrading to android 8.1, suddenly my car audio system doesn't receive songs data (artist, song, album). It's just display "no title".
Does anyone encountered similar issue?
raven6679 said:
I've got a different problem with 8.1 and BT audio. After upgrading to android 8.1, suddenly my car audio system doesn't receive songs data (artist, song, album). It's just display "no title".
Does anyone encountered similar issue?
Click to expand...
Click to collapse
Ugh, exact same issue. I don't suppose you're using a car with a UConnect system in it? Dodge, Jeep? All those crappy brands?
I am able to make phone calls just fine but I can't stream audio to save my f**king life. This happened right after the upgrade to 8.1 and latest update did nothing to fix this nor did it mention the issue. Has Oneplus even acknowledged the issue?
Im actually having the same exact issue, with Uconnect on a 2017 Chrysler 300s. Bluetooth skipping and sounds like crap. Have tried pretty much everything so far and no fixes
this what happen to me ...bluetooth to speaker klipsch ... sometimes got crack sound ...i mean wtf
Has anyone been able to figure this out? I'm still experiencing issues as well. OP5T and QC35.
I've been working OP support for almost 2 months via email and the cannot figure out how to fix this for be BT CALLS sound terrible,
I'm having problems with Bluetooth in a ford fiesta 2015. The phone is on 8.1.0 stock, no root. The device itself connects to the car perfectly, but fails to download the phone book, and says I loose signal when trying to make a call. The device registers that I've asked to call a certain person but nothing else happens afterwards.
I didn't have this problem on 5.0.4

Audio not playing on headphones, it does on Bluetooth

Hello all.
So I have this weird issue I have not found solution or cause for.
I am on Resurrection Remix 6.1.0 and Blue Spark Kernel.
My wired headphones cannot play music/podcasts from PocketCasts, Shuttle+ and Spotify.
It does, however, play ringtones and notification sounds, and audio from videos from Whatsapp or YouTube.
My Bluetooth headphones play everything as normal.
I try the same headphones on another phones or my laptop, it works normally.
I do use Viper4Android since ages ago and I have not had this issue until today.
No idea on why. Can someone provide ideas?
Thank you.
No one?
What firmware are you on?
Same problem with me. I'm using lineage os.
thyagosabo said:
Same problem with me. I'm using lineage os.
Click to expand...
Click to collapse
Make sure you're on 5.1.2 firmware before flashing the rom.

Bluetooth issue

Hello, I'm having an issue with Mate SE's bluetooth quality. I will connect the phone to my jbl flip 3 bluetooth speaker and when music is playing, it skips, a lot. I have a bluetooth adapter in my car and when I connect my phone to that, it plays pretty well. Occasionally a skip, but bearable. Now you might say it's a problem with my speaker, when I was on EMUI 5.1 I used the phone with my speaker for an entire weekend out of town and didn't have any issues. The speaker also works fine with any of my other phones.
So it's specific to this phone, and the OS. I've tried lineage, xenonHD, and RROS, all the same problems.
I'm going to stock EMUI 8.0 to see if it persists. But perhaps this is a known issue or an issues someone has already had and can help me out.
Alright, so I'm back on EMUI8 and now the audio isn't skipping. But the audio is terrible quality. Anyone know how to fix this on custom roms?
Alright, so I'm back in RROS and was doing some trouble shooting with the bluetooth connectivity. I was messing with developer options to see if there was anything that could help, but nothing did. But I did notice something, I downloaded an app (A web browser) from the playstore and it made the skipping x100 worse while it was downloading and installing. Then it went back to average choppy.
might be something interfering with bluetooth. here i have good audio on bluetooth on custom roms, but it's a bit choppy from time to time. on emui, the issue goes away, audio is nice, no choppiness.
I've noticed degraded wifi speeds and latency when bluetooth is turned on.
Any test I did was without my WiFi turned on. It is something with the custom roms that cause the stutter with my bluetooth speaker. Hopefully it gets fixed as things get more stable.

Random Pausing?

Has anyone had any issues with music randomly bring paused? At first I thought it might be an issue with my earphones, but it also happens on my Bluetooth speaker. It happens on both Phonograph with local music and Spotify so I know it's not a stream getting interrupted. Running Stock Pie with latest security patch, Magisk 19.4, and latest ElementalX Kernel for TWRP. I also feel like at one point I had this same issue on my OG Pixel XL but can't remember what fixed it.
buzzywuzzy said:
Has anyone had any issues with music randomly bring paused? At first I thought it might be an issue with my earphones, but it also happens on my Bluetooth speaker. It happens on both Phonograph with local music and Spotify so I know it's not a stream getting interrupted. Running Stock Pie with latest security patch, Magisk 19.4, and latest ElementalX Kernel for TWRP. I also feel like at one point I had this same issue on my OG Pixel XL but can't remember what fixed it.
Click to expand...
Click to collapse
You can try switching off battery optimization for the music apps. This I had to do for BubbleUPNP, otherwise the app gets kicked out of the memory after a few minutes and hence stops playing...
I've had that problem but only while using bluetooth in my car. So it could be a problem with my car stereo or the phone, but it doesn't happen often. I am completely stock not rooted.

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