Develop Bugs

Bluetooth Issues

Since i update to CM13 in the Tap Pro 8.4 i habe a Bluetooth issue. I can conect to my soundbar but the audio stutters. I can not listen to music any more. It worked on cm12...

CM13 is not stable yet, it was just released a few weeks ago, personally I have tested bluetooth (audio, gamecontroller) and it works ok with my equipment, but I have noticed they have verbose logging on for BT (logcat goes on forever) so that could be whats causing your issue, I suggest waiting until the first stable build comes out or revert to 12.1 in the meantime.
also try disabling 2.4ghz wifi.

sad but...
I go back to 12.1 the bluetooth issue seems to be a cm13 problem.

Hi folks....
I have a Tab Pro 8.4 with CM13 on it.
I was trying to pair a small bluetooth speaker to this tablet and had no luck.....the speaker pairs fine with my phone.
Any suggestions of a solution?
Thanks for your assistance

BLUETOOTH issues CM12, CM13 and other ROMs N7100

hi. I have done so many tests so far so I know what I'm saying.
most used ROMs for N7100 are heavly unstable with bluetooth.
effects are various, from stuttering in a2dp with BT headset to bad reconnecting to low power devices (example smartbands) etc.
again, to connect to some special device I need to reboot many times, for example some kind of internet things.
at the moment the ONLY rom, beside stock, that has a PERFECT manage of bluetooth is:
[OK] ---- [ROM][5.1.1][Haxynox] AOSP for n7100
and roms I tested that has not:
[NOT] ---- [ROM][5.1.1] 12.11.2015 Cyanogenmod 12.1 N7100
[NOT] ---- [ROM][6.0.1] Cyanogenmod 13.0 N7100 Build 8
[NOT] ---- Paranoid Android for Note II(GT-N7100)
[NOT] ---- [ROM][5.1.1_r24][Official][Nightlies]Exodus Android for Samsung note II
[NOT] ---- [ROM][5.1.1][Lollipop][Official][Nightlies] NamelessROM 2.1
[NOT] ---- [ROM] CyanoBiz - CM-13.0 - Doze enable - n7100 / Galaxy Notes2
[continue]
how to test:
there are many methods to test bad handling of bluetooth, most important test with daily use, but to prevent headache you can do in this way.
- pair any bluetooth headset or car free-hand kit.
- play some music to that device
- meantime go to bluetooth option and search for new devices
- if music stutters that rom is affected with bt issues, if not rom will never hurt you and your devices.
so: why I don't stay with Haxynox?
I would but that rom is
a little unstable.
vivavoice volume doesn't work.
bt file transfer crashes.
sometime reboots.
doesn't handle >16GB sd card.
doesn't handle movetosd.
developer is working on CM13 and left this.
please feedback here to have stable bluetooth back!

8rnity said:
hi. I have done so many tests so far so I know what I'm saying.
most used ROMs for N7100 are heavly unstable with bluetooth.
effects are various, from stuttering in a2dp with BT headset to bad reconnecting to low power devices (example smartbands) etc.
again, to connect to some special device I need to reboot many times, for example some kind of internet things.
at the moment the ONLY rom, beside stock, that has a PERFECT manage of bluetooth is:
[OK] ---- [ROM][5.1.1][Haxynox] AOSP for n7100
and roms I tested that has not:
[NOT] ---- [ROM][5.1.1] 12.11.2015 Cyanogenmod 12.1 N7100
[NOT] ---- [ROM][6.0.1] Cyanogenmod 13.0 N7100 Build 8
[NOT] ---- Paranoid Android for Note II(GT-N7100)
[continue]
how to test:
there are many methods to test bad handling of bluetooth, most important test with daily use, but to prevent headache you can do in this way.
- pair any bluetooth headset or car free-hand kit.
- play some music to that device
- meantime go to bluetooth option and search for new devices
- if music stutters that rom is affected with bt issues, if not rom will never hurt you and your devices.
so: why I don't stay with Haxynox?
I would but that rom is
a little unstable.
vivavoice volume doesn't work.
bt file transfer crashes.
sometime reboots.
doesn't handle >16GB sd card.
doesn't handle movetosd.
developer is working on CM13 and left this.
please feedback here to have stable bluetooth back!
Click to expand...
Click to collapse
On RR Lollipop I've had bt stuttering
on dr.ketan kitkat bt was very good
on CM 13 build 7 bt works just fine: tested on mazda infotainment, bt jack adapter, JBL speaker, laptop, pairing with other phone also ok and recently with SmartWatch 3, so I think it's related to hardware if you can't get it to work

thank you for reply. sorry but I don't think is hardware related.
I read tons of thread where n7100 owners wait for a build with decent bluetooth manager. most are still searching for. I was lucky as I found at least haynox build.
so I decided to share this.
did you test playing music through bt speakers and while listen music going to 'searching for bt device' screen?

8rnity said:
thank you for reply. sorry but I don't think is hardware related.
I read tons of thread where n7100 owners wait for a build with decent bluetooth manager. most are still searching for. I was lucky as I found at least haynox build.
so I decided to share this.
did you test playing music through bt speakers and while listen music going to 'searching for bt device' screen?
Click to expand...
Click to collapse
no, I think when it's paired with device and sound plays well, so there is no need to go there, but I#ll check it this evening

yaro666 said:
I'll check it this evening
Click to expand...
Click to collapse
thank you. this may be useful for me.

tested:
[ROM][5.1.1_r24][Official][Nightlies]Exodus Android for Samsung note II
[ROM][5.1.1][Lollipop][Official][Nightlies] NamelessROM 2.1
both have bt issues

yep, I had to go back to stock.. my sony smartwatch 3 was unusable.... I don't like to put my money on trash...

[ROM][5.1.1] 12.11.2015 Cyanogenmod 12.1 N7100
[ROM][6.0.1] Cyanogenmod 13.0 N7100 Build 8
Have problems with bluetooth calls (Static, robot voice), Music player is fine

As I added more bt devices it started to stutter rarely. I noticed that it only stutters when bt is searching, although it's connected.
CM13 build 7.
I believe it's related to data flow, it just can't send/receive that much data simultaneously

ok, after tried so many roms I can say that if you have that stutter bluetooth is less stabile than ideal. can be that you have devices where is less evident. but it's not the way to be:
if you can nandroid backup your note2 and try haynox build. you'll nave stable BT and in test never stutters. in fact there's no way to make it stutter with this ROM. but as said there are other issues..
less than ideal.

[ROM] CyanoBiz - CM-13.0 - Doze enable - n7100 / Galaxy Notes2
my hope for BT was fix by P.A.N. from i9305 github, but NO, it doesn't work well.
waiting for AOSP from same developer

Any news about this?
CM Roms were always weak about bluetooth stream. I have a 6p now and it's happening. On Pure Nexus I'm fine but would love to stay CM

after many devices and settings I came into conclusion, that bluetooth problem is related to android wear app. When I had paired SW3 and allowed Note2 to constantly search for my watch it stutters often, but after uninstalling all that crap, Note don't search for other devices when connected to 1 device and sound doesn't stutter, not even once.
I'm using CM13 build 10

Umm I posted some stuff in Ivan's build 10 rom thread. If you switch network to 2G instead of 3G, bluetooth calling works once again. I tested this about 20 times afterwards and it worked everytime. It even works with traffalguar square's rom.
Hope it helps.

[ROM][6.0.1][v6.18][Beanstalk][OFFICIAL][Great Experience][DU-Features][19.06.16]
This rom have bt issue too.
Still no solution ?

I found a good ROM
I've been struggling with BT Handsfree issue for a very long time. I almost bought a new phone recently, because of this issue. I drive a lot and I really need that function. Samsung original stock rom is so bloated and ugly that it was not an option. Unfortunately non of the CM and AOSP ROMS have fully working BT audio.
I found a solution: [ROM][GT-N7100][TW 4.4.4] Eclipse By AC version 9
It is a stock based ROM with TouchWiz UI. I don't like Samsung interface but this one is really debloated and very pleasant. I think I will get used to it. It's super stable and very fast. I moved to it a few days ago, and my Plantronics M70 headset is finally working like a charm. Just remember to make a full phone wipe before install (including data partition). I had some issues with that.

Bluetooth Audio issues with CM ROMs

Hello,
I have got a strange problem, running BJRR (no problems with OOS):
Very often I cannot connect to Bluetooth audio on my car. Phoning works, but it cannot connect to a2dp. Sometimes it connects then, but I hear my music through my phone speaker, but can control it using my car.
The phone often says "Bluetooth connected (no media)"
This seems to be a cm issue. Can anybody confirm or help?
Best regards

yeah its a known problem with CM, i think even after merging OOS nougat blobs to CM its still have problem with some Bluetooth devices

Bluetooth headphones with Android 7.1

Hi, guys!
Recently I decided to install Android 7 ROM but have a strange bug with my bluetooth headphones.
It's Bose QC 30. After pairing they with my phone I hear no sound, but if I turn off and then turn on bluetooth on the phone the headphones work correctly. If I turn off and then turn on my headphones and they will connect to my phone, I hear no sound again
If my phone connects to my headphones - all right.
If my headphones connect to my phone - no sound.
When I used Android M, my headphones worked fine.
I tried any ROM with Android N: CM, lineage, Cypher (AOSCP) and many others, each of it has this bug.
I tried to use another headphones (QCY QY12) and very old bluetooth speaker (LG Music Flow P7), they worked correctly.
I don't understand, where is this bug in android N or in Bose firmware.
Any suggestions to fix it? Thanks!
Can I use anything to debug my bluetooth connection and read logs of it?
HTC One M8 (HTC__A07)
S-OFF
Firmware: 6.12.401.4

I would say its from the headphones because are probably old model.I have strange problems with Bluetooth headphones and speakers after upgrading to android 7.My opinion is that they are not compatible with the new version of the android.

mefistoreyon said:
I would say its from the headphones because are probably old model.I have strange problems with Bluetooth headphones and speakers after upgrading to android 7.My opinion is that they are not compatible with the new version of the android.
Click to expand...
Click to collapse
The headphones are a new model of September 2016 but they probably use a old bluetooth chip. Although I tried to use lg music flow p7 bluetooth speaker witch is too older than the headpones and it works fine.
It's a very strange issue.

Yes , strange indeed. Sadly I don't think there is fix for that

And I notice the simmilar issue with my laptop (macOS Sierra 10.12.2): at the first time when the headphones connect, they use SBC codec, if I reconnect they then they use AAC codec. May be Android 7 has a bug to work with SBC codec?

Bluetooth issues

Hi. Wondering if anybody could help. When I connect my oneplus 5T to my car I have problems. When it starts to call it disconnects the bluetooth from the car completely. However the call continues on the phone which is a complete pain as you cant use it through the hands free. Car is a BMW 630CI with pro nav if that helps.
Many Thanks

i first had problems to connect to my audi A3 bluetooth ... it simply didn´t find it
after trying again and changing the bluetooth audio codec it suddenly worked ...
Idk if it will work for you, but you can try changing the codec and se if it helps

Hi. Ive tried all 3. It connects fine and I can see my contacts but as soon as I hit dial it disconnects from the car.
Very strange.
Thanks for the suggestion tho

with mine in my car it every now and then gives me this a crackling sound.. Kind of irritating, I'm hoping a software update down the road fixes this.. I've tried all 3 codecs

Having issues with Bluetooth connection on my Prius Prime as well. It always disconnects, I had to disable Bluetooth on the phone and re-able it for it to work.
I experience the same with my Boss QC35. First connection, audio breaks with lots of noise and had to disable it and re-enable it.

Still found no solution. Hope the next update sorts it out as the bluetooth seems a mess.

So after looking around, there are issues with certain codecs and devices connecting being posted in the OP community forums. My Sony WH1000xm2 headphones stutter when using AptX HD. My JBL Everest 750NC's - if you turn the volume up too high, they disconnect from the phone. In my Cadillac ATS, whenever you place a call it'll stay connected, but you won't hear anything, and the other user can't hear you either.
I think they've acknowledged the issues and are working on them, but after putting Oreo on my Moto G5 Plus and Oreo's ability to change between all codec's on the fly (including native LDAC support!) I'm anxiously awaiting Oreo to be 'officially' released.
I'd say just be patient.. I'm sticking with this phone because I think it'll be worth it in the end. Wish I had better news!

so I resolved my Bluetooth issues by flashing FreedomOS. Now there is no intermittent crackling sound now and there is no issues at all ymmv, this was just my experience.

Thanks. Will wait for Oreo and then try different roms if it continues.

on FreedomOS before, it was giving me headache re-connecting to my Subaru car bluetooth, like after you shutoff engine, go somewhere and come back, unless you manually force connecting to the car, it barely auto reconnect back.
And also takes so long to get data sync from my Fitbit chargeHR to the app.
I don't think this kind of bluetooth issue related to what rom we have but the kernel and more specifically BT firmware.
-----edit-------
My friend also got BT issue when he tried to connect to BT headset. Hope Oneplus get something fixed on new oreo or updates

Just an update. Since upgrading to the official Oreo rom my problems have disappeared and my phone now works fine with the car Bluetooth.
Chris

I still have problems. Pause and unpause, and the track restarts. After ending a phone call the track restarts. 2018 RAM, Uconnect

With stock ROM 4.7.2 bluetooth connected only for a few seconds with my Audi A6. With every following stock ROM version it didn't even connect.
I tried every single Audio-Codec and the different settings in developer options - nothing helped. Once I cleared data & cache from the bluetooth system apps followed with a soft brick

Hi all,
Had same issues with my Hyundai ix35 and oneplus 5t (Nougat), tracks skipping, distorted audio in calls, etc... Tried emptying bluetooth cache, switching audio codecs without success. Now I just received the OTA update to Oreo (8.0), Oxygen rom 5.0.3 and it solved the issues!!! Yeay, no more auxilary cable hanging around !

fx_viper said:
Hi all,
Had same issues with my Hyundai ix35 and oneplus 5t (Nougat), tracks skipping, distorted audio in calls, etc... Tried emptying bluetooth cache, switching audio codecs without success. Now I just received the OTA update to Oreo (8.0), Oxygen rom 5.0.3 and it solved the issues!!! Yeay, no more auxilary cable hanging around !
Click to expand...
Click to collapse
I started from scratch but the issue persists.

I am having the same issue in my car. It no longer displays track information and the connection is not very stable. I will try switching the codec and report back.

i don.t have any volume control from the phone basically when i connect it to my car stereo
i can control the volume for the first 4-5 clicks ... and then the slider moves but there is no difference in the volume
i have to turn the volume from the stereo almost to the max
whit my old samsung tablet works great ... i have maybe 50% more volume then with my phone
tried all codecs ...