HTC M8 - Android Marshmallow - Issue with Bluetooth contact sharing

[Anonymous]

Hi,

I've had an issue with bluetooth contact sharing between my HTC M8 and my Garmin 2599 satnav ever since upgrading to Marshmallow.

The contact sharing used to work correctly on lollipop (i.e. making/receiving calls displays the name rather than the number on the satnav, able to see lists of recent dialled/received calls, voice command dial by contact name etc).

A bit of googling around seems to indicate that this might be a widespread problem, affecting multiple handsets/manufacturers (https://productforums.google.com/forum/#!topic/nexus/cf4IluJllRc possibly this bug: https://android.googlesource.com/platform/packages/apps/Bluetooth/+/040402464a9de72e6dfc7b8a287c8560... may be wrong though!)

Does anyone know if it is possible/likely that there might be a bugfix release for the HTC M8?

Or else is there a reasonably straightforward way to roll back to Lollipop?

Thanks,

Ben

[jonsie]

If it's a widespread problem then in all probability there will be an update but maybe this is one for @MI5 

[Bambino]

@Anonymous That's probably something you'd have to ask HTC support: http://www.htc.com/uk/support/

[MI5]

It's connected with SELinux being in permissive mode.
To get BT working properly it needs to be in enforcing mode but you will have to Google how to do it on an M8 as I don't own one.
There are apps but no recommendations as I am rooted and don't need them.
Your other option is to make sure you have your Nav listed as a trusted device.

[Anonymous]

Yeah, I tried HTC support first, but the response was pretty shockingly poor.

(Can be mostly sumarised as "Bluetooth? We support these bluetooth profiles, it's the other devices fault, kthxbye.")

[Anonymous]

It's just the stock non-rooted O2 marshmallow image (only ever had normal OTA updates), so I'd assume that SELinux would default to enforcing, and not be alterable to permissive without rooting?

The rest of the bluetooth stuff tends to work ok (although now I'm thinking I'll need to check through them all again).

Seems pretty crazy that usage of a basic feature would require rooting the phone?

The list of trusted devices only seems to be related to the lock screen - anyway, will test it once I'm in the car and see if i can set it to trusted once it's paired/connected/active.

[MI5]

Yeah you need to be paired first - I couldn't remember if you need root to change it or not tbh......