topic Re: Bluetooth connection keeps dropping since MM upgrade. in Z Series

Bluetooth connection keeps dropping since MM upgrade.

javedhc — Wed, 09 Mar 2016 10:21:35 GMT

Since the OS update to Andoid 6.0, my Z5 no longer maintains a Bluetooth connection with any of my devices. It connects OK but after a minute the connection drops and then reconnects. It keeps doing constantly.

Any ideas?

Re: Bluetooth connection keeps dropping since MM upgrade.

Qatrium — Wed, 09 Mar 2016 10:57:52 GMT

@Javlar

Did you try simple troubleshooting like restarting your device or switching airplane mode on then off?

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Wed, 09 Mar 2016 21:30:20 GMT

I did. Didn't make any difference.

Re: Bluetooth connection keeps dropping since MM upgrade.

jerffi — Thu, 10 Mar 2016 17:53:27 GMT

I have similar issue in Xperia Z5 Compact. After update to Android 6.0 Bluetooth keeps stopping and restarting. Connection to car handsfree is first established but then phone reports that bluetooth has stopped. My car is BMW 525i 2007 model. Used to work fine before the update.

Re: Bluetooth connection keeps dropping since MM upgrade.

Rickard — Fri, 11 Mar 2016 10:07:06 GMT

I'm sorry to hear that

What bluetooth devices do you have connected (do you have more than one)?

Could you try if this also happens in safe mode?

Re: Bluetooth connection keeps dropping since MM upgrade.

jerffi — Fri, 11 Mar 2016 16:00:55 GMT

I have only car handsfree connected. Tested today and same happens in safe mode.

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Fri, 11 Mar 2016 18:35:19 GMT

Doesn't matter in Safe Mode either. Does the same. Other than reset to factory settings do you have any other advice?

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Thu, 17 Mar 2016 06:45:22 GMT

Have tried in safe mode and have even reset to factory settings to see if that cures the problem and it doesn't. Hopefully Sony will realise there is a bug and will get it sorted.

Re: Bluetooth connection keeps dropping since MM upgrade.

Rickard — Thu, 17 Mar 2016 08:19:48 GMT

Would it be possible for you to take a log file from your phone after it has been disconnecting/reconnecting and send it to me?

To do this:
Settings > About phone > Build number, tap 7 times on the build number
Go back and select Developer options and turn on "USB debugging"
When it's been disconnecting/reconnecting:
Settings > Developer options, select "Take bug report". When the report is ready share (may take a minute or so) you get a notification that you can tap and share to Google Drive. Please send me a link to this file in a private message.

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Sun, 03 Apr 2016 17:20:42 GMT

OK. Are we any closer to solving this? I'd rather go back to the previous Android 5.x as everything worked perfectly before.

Re: Bluetooth connection keeps dropping since MM upgrade.

Rickard — Thu, 07 Apr 2016 09:56:50 GMT

@jerffi

I just got some information on the logs you sent me. Can you please try remove the pairing with your car from Settings -> Bluetooth -> [settings icon next to your car] -> Forget and then try to pair them again.

@Javlar

Can you please also try this suggestion? Also see the PM i sent you.

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Thu, 07 Apr 2016 14:50:10 GMT

Have tried what you suggested and have even reverted back to factory settings twice and its not worked. I've tried it with a Motorola phone with Androuid 6.0 and there are now issues with that.

Re: Bluetooth connection keeps dropping since MM upgrade.

bkvamme — Thu, 07 Apr 2016 15:20:33 GMT

I have a similar problem. Bluetooth audio is stuttering to the point where it is unusable. Seems to be related to CPU/device usage, as the issue is much more audiable when doing CPU intensive loads (loading webpages, installing apps etc.).

I have tested with three separate devices (B&W P5 Wireless, ODT Big Turtle shell, Frankenspiel FS-X) and the same issue is present across the board.

Using my Nexus 7 (2013) which is also updated to Marshmallow shows no issues, and this issue was not present before the update to Marshmallow. I have used the P5W for over a year, both with my Xperia Z3 and the Xperia Z5 and the issue has never happened before.

I tried booting into the failsafe mode, and the issue was not very noticeable (however still present). I would be happy to help debugging this if required, otherwise I will be flashing back to 5.1.1 later in the weekend, as this makes the Z5 unusable for commuting.

Re: Bluetooth connection keeps dropping since MM upgrade.

jerffi — Thu, 07 Apr 2016 15:31:17 GMT

I tried this earlier, didn't help.

However now I have changed car and phone is working fine with Mercedes-Benz.

Re: Bluetooth connection keeps dropping since MM upgrade.

totoroo — Thu, 07 Apr 2016 18:41:06 GMT

@bkvamme wrote:
I have a similar problem. Bluetooth audio is stuttering to the point where it is unusable. Seems to be related to CPU/device usage, as the issue is much more audiable when doing CPU intensive loads (loading webpages, installing apps etc.).

I have tested with three separate devices (B&W P5 Wireless, ODT Big Turtle shell, Frankenspiel FS-X) and the same issue is present across the board.

Using my Nexus 7 (2013) which is also updated to Marshmallow shows no issues, and this issue was not present before the update to Marshmallow. I have used the P5W for over a year, both with my Xperia Z3 and the Xperia Z5 and the issue has never happened before.

I tried booting into the failsafe mode, and the issue was not very noticeable (however still present). I would be happy to help debugging this if required, otherwise I will be flashing back to 5.1.1 later in the weekend, as this makes the Z5 unusable for commuting.

There is another thread on bluetooth stuttering

Re: Bluetooth connection keeps dropping since MM upgrade.

x1rob — Thu, 07 Apr 2016 19:32:21 GMT

If you do find a fix for this, can you post to me as well. I nearly crashed the ca today trying to make a call because it dropped out at the wrong moment. It does it with all three cars hat I drive. I also have a smartwatch, I wondered if that might be the cause??

Re: Bluetooth connection keeps dropping since MM upgrade.

sfortis — Fri, 08 Apr 2016 05:00:14 GMT

@Rickard wrote:
@jerffi
I just got some information on the logs you sent me. Can you please try remove the pairing with your car from Settings -> Bluetooth -> [settings icon next to your car] -> Forget and then try to pair them again.
@Javlar
Can you please also try this suggestion? Also see the PM i sent you.

Hi Rickard,

why the testing team cannot reproduce a big issue like this? It is very simple... The device after 2-3 days (or less) of uptime will start stuttering when you listen to A2DP audio and you do some basic tasks (like web browsing ,installing an application, etc).

Here are also some logs provided that shows the buffer underruns.

http://talk.sonymobile.com/t5/Xperia-Z5-Z5-Compact-Z5-Premium/Bluetooth-audio-stutter-after-marshmallow-update/td-p/1103796

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Mon, 16 May 2016 14:09:39 GMT

Any progress on this or is Sony just ignoring it?

Re: Bluetooth connection keeps dropping since MM upgrade.

Uliwooly — Thu, 19 May 2016 20:33:49 GMT

@Javlar

There's no need to create duplicate posts, thanks.

Here are the forum guidelines

http://talk.sonymobile.com/t5/Welcome/Discussion-guidelines/m-p/349678#U349678

Re: Bluetooth connection keeps dropping since MM upgrade.

javedhc — Fri, 20 May 2016 05:32:30 GMT

Maybe if the support would look at rectifying the issue, which is obviously a Sony problem, I wouldn't have to create a duplicate post.