Bluetooth audio re-connection fails with BMW. - Xiaomi Mi 4C

Hi all,
ROM is MicroG LineageOS 14.1 (Android 7.1.2)
After my last visit to maintenance, my Mi4c cannot re-connect to the audio channel in my BMW X1 (quiting the car / going out of range). The Tel channel reconnects OK. Dunno if BMW did a software update.
I have tried several things to make it work but the only one that solves this problem is to reboot the phone before it connects to the car's Bluetooth.
It seems like a process is making the Bluetooth audio channel busy.
Is there a way to see which app could lock the Bluetooth audio channel ? Is there a way to do a sort of clear cache/kill the app preventing the connection ?
Thanx for your ideas.

Related

[Q] Problem about AVRCP in N1

My phone is HD2 and installed the rom New Nexus One Android 2.2 Build FRG33 [ mccm v1.5](8.9.2010)
I found that i just couldn't use the buttoms on my bluetooth headset when im enjoying music.
what should i do with this problem?
thx for ur help!
I get this problem occasionally when I link my N1 w/ my car stereo. The controls don't work etc and it's not in audio streaming mode (ie. it's probably only using the Phone bluetooth profile and not the stereo audio profile as well). What I usually do is go into bluetooth settings, long click the device, and uncheck the bluetooth profiles. Then I recheck those profiles and reconnect the device. This usually fixes it. Of course, your problem could also be related to this HD2/Android hackery...

[Q] bluetooth pairing issue, how to solve?

Hello, so i bougth this great phone, but bluetooth pairing(+autoconnect) is not working at all.
So to the proplem. My opo IS paired with my alpine car stereo, but everytime i go to my car opo asks IF i want to pair it...and obviously it should just connect automatically since i have paired it earlier but no.
Is this some known issue with opo or my device just making me headtache?
IF anyone have had same proplems i would love to hear how you managed to fix it.
PS. All my old phones automatically connected to car stereo after pairing once, so its most definatly opo issue and not the alpine stereo.
Okey, i got this solved by doing 2 things, but because im stupid and didnt test it between these actions i cqnt say which one did the job or was both needed.
1. I cleared "paired devices memory" from my alpine stereo.
2. I cleared paired device list from my handset(opo)
Hope this will help someone else in future who got proplems with alpine receiver and opo.
Problem solved! bluetooth pairing and buffering issues
Hey problem solved
I had bluetooth pairing and buffering problems and now everything works perfectly. what I did was flash OPO_OxygenOS_1_0-modem-flashable.zip (you can find it somewhere in google docs..don't remember the link)
anyway after doing that everything works perfectly.
I am running cyanogen 12.1 nightly build from 20150601
then I flashed the modem.
makkeonmies said:
Hello, so i bougth this great phone, but bluetooth pairing(+autoconnect) is not working at all.
So to the proplem. My opo IS paired with my alpine car stereo, but everytime i go to my car opo asks IF i want to pair it...and obviously it should just connect automatically since i have paired it earlier but no.
Is this some known issue with opo or my device just making me headtache?
IF anyone have had same proplems i would love to hear how you managed to fix it.
PS. All my old phones automatically connected to car stereo after pairing once, so its most definatly opo issue and not the alpine stereo.
Click to expand...
Click to collapse
oohh
AlonAsh said:
Hey problem solved
I had bluetooth pairing and buffering problems and now everything works perfectly. what I did was flash OPO_OxygenOS_1_0-modem-flashable.zip (you can find it somewhere in google docs..don't remember the link)
anyway after doing that everything works perfectly.
I am running cyanogen 12.1 nightly build from 20150601
then I flashed the modem.
Click to expand...
Click to collapse
Technical solution...too much ?
Hello All,
I too was facing issue with the Bluetooth connectivity. My headphone "Jabra Halo Smart" worked perfectly fine with other android devices but my OnePlus One. Issue i faced was that my at times my headphone would get detected but the headphone controls wont work. It was really irritating as i could not use the functionality of my headphones.
What i did was went into the Bluetooth options. Clicked on the setting icon beside my headphone and unchecked and rechecked the options.
Another action i performed was un-pairing the Bluetooth headphones from my device and resetting my headphones paired setting.
Third option was resetting the Jabra app that i installed on my mobile.
Fourth action is restarting your OnePlus device.
The above actions i performed in different orders. So one of them should surely help.
Suggestion provided by OnePlus Call Center: (which i did not need to try )
--> switch off the device
--> Press power+vol down button simultaneously
--> Select English language
--> wipe cache partition
--> wipe cache
--> reboot device
Advice while using Bluetooth headphones or speakers (especially Bluetooth devices having the functionality to connect multiple devices)...switch off the Bluetooth device and then switch off the Bluetooth of the host device (mobile, laptop, etc) and then connect the Bluetooth device to the other host device
Do not keep two host devices Bluetooth on...at times it causes to store the connection setting in the cache causing the Bluetooth device to act strangely. :cyclops: :cyclops: :cyclops:

bad wlan if bluetooth active

Hi there,
I've tried to hear some music with spotify and an bluetooth speaker. Sadly it's not going well. I've noticed that, if my bluetooth is connected to an bluetooth speaker, my wlan bandwidth is very bad. If I turn bluetooth off, it's going well again. I've tried two speakers with the same effect. My tablet has the same bug. I use Cyanogenmod 13 first in a stable Version and now in nightly, same bug on boths versions.
My devices:
Nexus 5
13.0-20161015-NIGHTLY-hammerhead
LG-GPad 8.3
13.0-20161004-UNOFFICIAL-awifi
Can someone help?
Regards
To all not knowing what WLan is... German for Wi-Fi.
or wireless lan, sorry my bad

Bluetooth headset compatibility

Hello guys, anyone use a bluetooth headset? if yes, what brand is it? i use LG tone+ that support bluetooth 4.1, a2dp and apt-x, but the problem is the sound frequently become distorted, especially when my kenzo far enough from bluetooth headset (50 cm +). Is the problem with headset or rom i used? i use miui 8 dev cn. thanks for help.
hey, i think its headset related. im using a AudioMX Bluetooth Over-Ear headset and it works within a reach of 4-5m. after that distance i have problem with audio distortion.
I have a sony SBH60 and it works flawlessly. No distortion at all, and little to no "audio lag" (I mean audio/video sync), at least I haven't noticed while watching classic youtube content, I don't use my phone for movies or TV Shows.
For me I am using Samsung level U and everything works well. Besides, I have a portable bluetooth speaker too (china brand) and also works.
what rom do you use guys? i use miui dev cn official. thanks.
I'm using latest xiaomi.eu rom
Sorry for the late reply, I'm using 8.1.3.0 Global, always kept my phone up to date, no issues so far.
Also tested with my in car Pioneer MH380, a Logitech MiniBoom (UE), and a MPOW Bluetooth transmitter.
I've never had any issue with bluetooth whatsoever, maybe a clean install could help.
Hi, anybody having their sounds lagging every 10-30 seconds? I'm streaming via bluetooth to my car head unit and the sound keeps disappearing about a second and it's pretty annoying. and only this phone having this trouble. Update/clean install doesn't help. I'm using global dev.

Bluetooth issue in car: Stock ROM vs non-stock ROM

Hi all,
I have a 2008 vehicle in which Bluetooth seems to be a problem depending on which ROM I have installed on the device.
I'm currently on Android 9 OB 7 and Bluetooth connects and stays connected through incoming and outgoing calls. Works flawlessly.
However, with for example Lineage (among others), the Bluetooth pairs, but connection drops soon after or drops after the first call with the car stereo showing "Net Search", meaning the car BT lost service but the phone Bluetooth is still connected. I've tried restarting and resetting network settings but no luck at all. Changing dev options doesn't work either.
I'm thinking it could be a Bluetooth stack difference?
Is there a way to replace the lineage Bluetooth with OOS?
There is no bluetooth.default.so file that I could find
Any help or direction is appreciated.
nickelnine said:
Hi all,
I have a 2008 vehicle in which Bluetooth seems to be a problem depending on which ROM I have installed on the device.
I'm currently on Android 9 OB 7 and Bluetooth connects and stays connected through incoming and outgoing calls. Works flawlessly.
However, with for example Lineage (among others), the Bluetooth pairs, but connection drops soon after or drops after the first call with the car stereo showing "Net Search", meaning the car BT lost service but the phone Bluetooth is still connected. I've tried restarting and resetting network settings but no luck at all. Changing dev options doesn't work either.
I'm thinking it could be a Bluetooth stack difference?
Is there a way to replace the lineage Bluetooth with OOS?
There is no bluetooth.default.so file that I could find
Any help or direction is appreciated.
Click to expand...
Click to collapse
I am having the same issue with 9.0.2 OOS. So not sure if this us a compatibility issue with more than 1-2 years old vehicles or something else? Glad to hear that OB7 is working fine for you. Hope fix is coming soon. It's simply annoying.
I am having car connection issues as well. I have a 2010 Ford Edge. Just moved from Sony Xperia XA1 Ultra on Orea to my first OP device - OP6 Pie 9.0.2 - I can connect to my car initially but once I turn off my car, I have to go through a series of reconnect steps. I called tech support and we spent about 45 min troubleshooting - of course I was told I was the only one who had complained of this issue - anyway no resolution. The only way I can "reconnect" is to go into my car's system settings and select "connect to BT device" then toggle bluetooth off and on in the phone - sometimes this works with the first go, other times I have to repeat this cycle 5 or 6 times. Simply selecting "previously paired devices" in the phone app doesn't work either.
Really a pain in the tush, because I am usually in a hurry and don't have time to go through all this scenario to get a connection.
On the other hand, I have a bluetooth ear piece (made by Samsung that is like 5 or 6 years old) that reconnects every time I turn it on, no problems.
Car connections too but was not present in omni
I found for stock, performing a network reset (mobile, wifi Bluetooth) then restarting the device fixed the Bluetooth connection issue.
For custom non-stock ROMs, for my issue at least, I found its not a Bluetooth issue at all but rather the mobile network drops and the car Bluetooth cannot reconnect. The same network reset as above does not work but what does work is toggle off the "automatically select network" and manually select the mobile network from the menu that pops up. This keeps the mobile network intact (until the next device reboot, at which point repeat the steps) with the car and all is good.
I only figured it out by accident; hope this helps others.

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