bluetooth randow connection reset help - MTCD Android Head Units Q&A

Hi,
I have been trying to understand the reason to have erratic reset reconnection's between my android head unit and my android mobile.
The behaviour is always the same:
The mobile is paired and I never need to re-pair it again, It is a solid connection.
Swith on the head unit... few seconds latter and it connects with the mobile without any human action.
After ...... it may stay ok for 15m or 30m, but randomly it will reset the connection and re-make it again and start in this cycle of paired on----- paired off ---- paired on.....
It may also happen in a call moment.
I made a log with the programmer options from the mobile and ask, if someone could check it and see if it may find something that can help me...
(PS, this is a double post, I think that I put the first in a wrong place - sorry)
Thanks:
Mobile: Xiomi redmi note 4
Android 6.0
Stock
Head unit:
MCU MTCD_ZYC_V2.05_1
5.1.1
KERNEL
3.0.101+

Related

Bluetooth GPS works once before failing

I have just got a Wizard off ebay running WM6 which has TomTom6 installed. I have a generic bluetooth GPS receiver which works fine the first time I use it after pairing, but then as soon as the device is turned off via the softoff switch, it is not seen again. I have to remove the Bluetooth connection and port, then re-add it all. Once I repeat the process, it works find again until the next time it is turned off.
I have tried this with 2 different bluetooth gps units, both of which work fine for my friends so I suspect it is something wrong with either the Wizard or a setting somewhere.
I am new to all this so dont know what information I should post to help get advice but can provide any info you guys need.
Can anyone offer me and suggestions or pointers ?
after wake up, launch tomtom, but leave it for say 20 secs it should eventually pick it up, it just takes time
Hello,
I have the same problem.
GPS pairing + COM config OK.
Then I start TOMTOM 6 and all is working fine.
Now if I switch off my GPS, and leave Tomtom, then switch on my GPS and start TOMTOM, I have a message telling me my GPS wants to connect to my wizard. So I must redo the pairing (code 0000) + the com port configuration.
I have this problem since WM6 (I tried mUn, XPlore 1.0, 1.1, Core 2.0x, and now i'm with XM6).
No problem under WM5.
GPS is XLock256 (sold by Orange in France).
Anybody know what is happening ?
Thanks.
TomTom
Install TomTom, or if it's installed all is ok.
unpair your GPS unit.
Reset the GPS unit with the power button (normally by holding it)
Now Pair the GPS Device.
go to com Ports, and add a outgoing Port (Whatever port is available, me somehow I'm hooked to 7)
Now start TomTom
go to settings, GPS Config and choose other Bluetooth GPS (now wait)
Switch of and on again your GPS receiver, because it could be in a powersave mode, but still do it.
Choose your chosen port (me as said 7)
.......patience, now it should connect
Now it should be ok.
Play with it for a while, and close the app in it's specified way.
Now it should start as normal.
If you follow these instructions to the letter it works.
I don't see what I missed before, but apllying your procedure solved the problem.
Thanks a lot for your help.
paudib said:
I don't see what I missed before, but apllying your procedure solved the problem.
Thanks a lot for your help.
Click to expand...
Click to collapse
Normally it's the Auto Powersave which causes the problems, 1 year ago it took me 6 weeks to figure this out.
I'm having the exact same problem since upgrading to WM6 and despite following these instructions numerous times, every time I relaunch TomTom I get a prompt asking if I want to pair my GPS. If I select no, I get prompetd about every 5 seconds until I select yes at which point my existing pairing is deleted and a new one created. This pairing then lasts for the current TomTom session but the cycle restarts all over again when I relaunch TomTom and turn on my GPS again.
WM5 was completely flawless with the way it handled my GPS connection so what is different that is causing this behaviour?
BLUE Angel on WM6 tomtom6 BG001 GPS issue
Followed your procedure, got the connection set. Thanks loads, I was tearing my hair out. lj

Why am I losing paired devices on the paired device list on my T959V?

Both my wife and I have SGH-T959V with stock 2.3.6 firmware. We have numerous bluetooth devices these two phones are paired to.
My questions.... Once paired, a device should always show up on the bluetooth setting page (as PAIRED) even if that device is turned off or not within distance, right? What if unpairing has been done from that device?
The Scan Device button is to scan new unpaired but ready to be paired (30 sec or so) devices, right? And it has nothing to do with the paired device list below it, right?
Last question. If I turn off the bluetooth on my T959V and turn it back on, my panasonic KX-TG7745 link-to-cell desktop phone would not reconnect even it is set to auto-reconnect every 1 min. I have to manually connect it on my T959V. That is annoying but is that normal?
The problem I have is I am always losing paired devices on the paired device list on my T959V. Power cycling or removing battery might or might not get every device back.
Anyone having the same problem?
Bluetooth on the stock GB ROMs was wildly unreliable for me. I never figured out what it was, but my Motorola hands-free unit would sometimes not connect, sometimes disappear, and often not connect the audio.
I find that the Bluetooth support on AOKP (and probably most of the ICS ROMs derived from the TeamAcid line) to be greatly improved. Shoot, even just being able to give my Motorola a name so I can tell it from the same model in my wife's car is worth it!

problem android auto ...

Good morning to all, first of all I introduce myself to you. My name is Juan Manuel, I live in Buenos Aires Argentina and I work in a NOC of a telecommunications company.
The reason for my consultation is as follows. I honestly don't know what to do anymore.
I have a Pioneer AVH-Z5050TV stereo and a Samsung Galaxy Note 10 Plus Cellphone. And there is no way to run Android Auto properly since I bought both computers. No one gives me a single answer. Neither Samsung, nor Pioneer, nor Google.
When I connect the cell phone via USB cable to the stereo it lifts me for 5 seconds Android Auto and automatically disconnects and closes the application, I have to reconnect it so that the same thing happens. I did a lot of tests.
1. I did a factory reset. IT DID NOT WORK !!
2. Update the Stereo Firmware. IT DID NOT WORK !!
3. Buy 2 original Samsung data cables. IT DID NOT WORK !!
4. I lowered the Waze, so that it does not automatically lift the Google Maps and see if that was the problem and it persists.
A possible solution that you find is not the best thing to do. It was to grab an old Samsung J5 cell phone and with my Note 10 Plus give it internet through the Network Anchor and thus lift Android Auto from the J5. It works super slow but it works.
Something similar happened to this Google service and this cell phone? If so, sorry for creating this post but I didn't find it.
Thank you all for your time and I await everyone's answers.
Greetings.

Bluetooth auto-reconnect issues

I have OP7 PRO running android 10 and stock Oxygen OS (not root).
When I pair my device to my car bluetooth set everything works fine, but once the connection is lost it will not auto-reconnect the next time i'm in my car.
Moreover, in order to connect again i need to do the pairing again (not just select the device from the existing devices list).
I saw tons of threads online about this with no solution, some mentioned they think it's an issue with android OS and not the phone itself (this is supported by the fact that my wife just got a new Xiaomi and have the exact same problem).
Does it make sense that this is a global Android issue and has no fix for such a long time? did anyone experience it and managed to fix it?
I would guess at an issue with the car Bluetooth. May be theres a firmware update for that ?
UrbanBushman said:
I would guess at an issue with the car Bluetooth. May be theres a firmware update for that ?
Click to expand...
Click to collapse
That was my first thought, but it seems that the issue is on the device side as i can see that after connecting the device doesn't appear in the previously connected devices list.
As if the phone forgets it for some reason.
I've had occasional problems too. I'm using Launcher 10. Just last week, I turned on my wifi before starting my car as usual. It connected, then disconnected 2 times and then was stable. There's been times where I'll restart my car to fix it. It's irritating but who knows what can be done about it.
I have a rooted stock op7pro and I have a Samsung active2 watch that randomly disconnects and reconnects once or twice an hour. I have battery set to all Samsung apps on my phone to not optimize battery usage and I have no idea why it does this.
Sent from my OnePlus7Pro using XDA Labs
I have understood that it's also possible that it depend on the order in wich you connect.
You should first have to connect the car to the phone instead of the phone to the car.
Iow have the car lookup the phone
Yes, i head a lot about people with flaky connection but i hope that was the situation, for me it won't reconnet 100% of the times.
Changing the order of connections didn't work.

Dasaita PX6 - zLink Apple CarPlay not working, Wired or Wireless.

Hello everyone,
First of all it is so cool to stumble across this section of XDA with all of the community helping each other with Android Head units. It was so cool to see recommendations, suggestions, help, software updates, Custom ROMs, etc. so Thanks for all the cool post to read.
Now getting into my problem...
I purchased a Dasaita 10.2" Android 10.0 with the main intentions of using the CarPlay feature (Note: I am willing to use Wired CarPlay). Additionally would love the added features the unit provides for its price point.
However after receiving the unit and installing it, I can not get Apple CarPlay to work with a constant connection every time the vehicle is turned on. It takes a whole lot of tinkering to get it to connect; such as connecting bluetooth, headunit hotspot, headunit wifi, connecting with wire. Then once it is eventually connected CarPlay will work fine for the duration of the usage and any warm boots (turning the car off for a few seconds and turning it back on). It is so frustrating to get it connected because it is not straight forward or simple in any means. What is worse is that after the car is off for a good amount of time and I turn it back on, all is lost. zLink keeps trying to connect and bluetooth is definitely connected but it just won't connect. I have to tinker with it again, such as forgetting the device and forgetting CarPlay, trying to connect to bluetooth again and try to connect via wire, etc. Then eventually it might connect. There is just no specific instruction path to get it connected, just requires a bunch of different ways of tinkering to eventually it might connecting.
It has just been a pain to try and get CarPlay working, that was the biggest selling point for me to get this unit. If I can't get it working soon, it will be taken off the vehicle and returned.
Posting this here for help or possible leads to where to find help.
zLink:
APK Version: 3.5.56
VER-C: 30556
CHANNEL: HENGCHANGTONG
SYS-CHANNEL: hengchangtong
SYS-PLANTF: rk3399
Headunit:
Model: PX6(1280x720)
Android version: 10
Build number: rk3399-userdebug 10 QQ2A.200305.004.A1 eng.hct.20200609.160238 test keys
Kernel version: 4.19.111+ #1238 Tue Jun 9 15:48:02 CST 2020
MCU version: MTCE_HA_V3.56_1 Jun 17 2020 13:27:56
https://i.imgur.com/7w3TeBO.jpg
https://i.imgur.com/ncVafFc.jpg
https://i.imgur.com/VhJj14l.jpg
http://i.imgur.com/1alMxGx.jpg
P.S.: I made a small post about this issue in the Dasaita update topic and I was provided with update files. Link to the post and fellow comments.
P.S. 2: Android Auto works flawlessly, connect the USB and that is it Android Auto is working.
Got it working!!!! ?
The issue was that my phone was on iOS 14 Beta. I downgraded to a stable iOS version and it is working fine every time I turn the car back on and any warm boots. It just works now no problems.
The other devices I tested on where also on a stable iOS version not sure why they did not work?? Maybe I just did not test it enough, good thing I slept on it and recollected the next day.
Can you use Car Play wireless?
punjabi4life said:
Got it working!!!!
The issue was that my phone was on iOS 14 Beta. I downgraded to a stable iOS version and it is working fine every time I turn the car back on and any warm boots. It just works now no problems.
The other devices I tested on where also on a stable iOS version not sure why they did not work?? Maybe I just did not test it enough, good thing I slept on it and recollected the next day.
Click to expand...
Click to collapse
dominikfe said:
Can you use Car Play wireless?
Click to expand...
Click to collapse
Yes, CarPlay wireless works.
Due note I am now on iOS 13.5.1
Not sure if anybody here can help but I recently purchased a Dasaita PX30 it is running Android 10 but there is no ZLink installed. I am pretty sure this unit has wireless CarPlay compatibility: when I go to car factory settings under CarPlay it is selected to ZLink but again the ZLink app is nowhere to be found. I tried downloading the ZLink apk v3.5.56 and installing using external USB but it just comes up to ‘not installed’. Please help! Thanks
punjabi4life said:
Yes, CarPlay wireless works.
Due note I am now on iOS 13.5.1
Click to expand...
Click to collapse
I have same issue from yesterday, I have IOS 14.0, how to down grade? Who told into downgrade to lower version?
I’m on iOS14 and I keep getting a “hardware err, No MFi #” when I try to run ZLink (CarPlay wireless I haven’t seen an official new update from Dasaita.
Anyone else have this same issue?
punjabi4life said:
Got it working!!!!
The issue was that my phone was on iOS 14 Beta. I downgraded to a stable iOS version and it is working fine every time I turn the car back on and any warm boots. It just works now no problems.
The other devices I tested on where also on a stable iOS version not sure why they did not work?? Maybe I just did not test it enough, good thing I slept on it and recollected the next day.
Click to expand...
Click to collapse
Hi, I have the same problem, I just installed the head unit today. Android Auto works but Car Play doesn't. Two different iPhones, swapped the iphone cable as well. The iphones have the latest official iOS release.
giovosc said:
Hi, I have the same problem, I just installed the head unit today. Android Auto works but Car Play doesn't. Two different iPhones, swapped the iphone cable as well. The iphones have the latest official iOS release.
Click to expand...
Click to collapse
I had the same problem, CarPlay did not work with iOS 14, but after updating to 14.1 it started to work again.
giovosc said:
Hi, I have the same problem, I just installed the head unit today. Android Auto works but Car Play doesn't. Two different iPhones, swapped the iphone cable as well. The iphones have the latest official iOS release.
Click to expand...
Click to collapse
Fixed, I did a network reset in the head unit and now is working but doesn't reconnect after the car is switched off. Still troubleshooting
giovosc said:
Fixed, I did a network reset in the head unit and now is working but doesn't reconnect after the car is switched off. Still troubleshooting
Click to expand...
Click to collapse
Hi all,
I just installed the PX6 and everything works except Carplay. I have done everything that Dasiata on Amazon has instructed me to do. I can't get wired or wireless to connect. The main reason why I purchase this unit was for Carplay as well. I am on IOS 14.1. Any ideas?
MCU Version:
MTCE_HA_V3.62_1
Sept 14, 2020
Build Number:
rk3399-userdebug 10 QQ2A.200305.004.A1 eng.hct.2020091
Kernel Version:
4.19.111+
#2266 Tue Sep 15 15:49:09 CST 2020
khite1001 said:
Hi all,
I just installed the PX6 and everything works except Carplay. I have done everything that Dasiata on Amazon has instructed me to do. I can't get wired or wireless to connect. The main reason why I purchase this unit was for Carplay as well. I am on IOS 14.1. Any ideas?
MCU Version:
MTCE_HA_V3.62_1
Sept 14, 2020
Build Number:
rk3399-userdebug 10 QQ2A.200305.004.A1 eng.hct.2020091
Kernel Version:
4.19.111+
#2266 Tue Sep 15 15:49:09 CST 2020
Click to expand...
Click to collapse
*UPDATE*
Dasaita told me to update to MCU 3.65 and sent me the link. Now Carplay will work wirelessly, but will still not work wired. I realized that the way they have wireless Carplay setup to work sucks. I have to connect to the HU hotspot and Bluetooth to connect. Well, that keeps my phone from using cell data. Totally defeats the purpose. Does everyone have to connect that way?
khite1001 said:
Hi all,
I just installed the PX6 and everything works except Carplay. I have done everything that Dasiata on Amazon has instructed me to do. I can't get wired or wireless to connect. The main reason why I purchase this unit was for Carplay as well. I am on IOS 14.1. Any ideas?
MCU Version:
MTCE_HA_V3.62_1
Sept 14, 2020
Build Number:
rk3399-userdebug 10 QQ2A.200305.004.A1 eng.hct.2020091
Kernel Version:
4.19.111+
#2266 Tue Sep 15 15:49:09 CST 2020
Click to expand...
Click to collapse
So here we go. I have the solution that will allow you to connect to the Dasaita Hotspot and allow your phone to use mobile data. Finally, it works as it supposed to. This solution is for the PX6 with Android 10, MCU 3.65, and zlink.
1. Connect your iPhone to the Bluetooth
2. Connect your iPhone to the Wi-Fi Hotspot on the head unit.
3. Go to settings on the iPhone, then Carplay sections, and be sure that it connects to the head unit. Mine was called CAR-LINK, once connecting it changes to something like zjinnova-D310C
4. Go to SETTINGS and select Wi-Fi then select the blue INFO icon to the right of the name of your head unit hotspot connection.
5. Make note of both the IP address and the Subnet Mask address
6. Select the STATIC option and enter only the IP and Subnet Mask addresses from Step 5 -- (Leave everything else blank)
Boom, everything works as it should. I will inform Dasiata. This should be the first thing they tell you to try.
khite1001 said:
So here we go. I have the solution that will allow you to connect to the Dasaita Hotspot and allow your phone to use mobile data. Finally, it works as it supposed to. This solution is for the PX6 with Android 10, MCU 3.65, and zlink.
1. Connect your iPhone to the Bluetooth
2. Connect your iPhone to the Wi-Fi Hotspot on the head unit.
3. Go to settings on the iPhone, then Carplay sections, and be sure that it connects to the head unit. Mine was called CAR-LINK, once connecting it changes to something like zjinnova-D310C
4. Go to SETTINGS and select Wi-Fi then select the blue INFO icon to the right of the name of your head unit hotspot connection.
5. Make note of both the IP address and the Subnet Mask address
6. Select the STATIC option and enter only the IP and Subnet Mask addresses from Step 5 -- (Leave everything else blank)
Boom, everything works as it should. I will inform Dasiata. This should be the first thing they tell you to try.
Click to expand...
Click to collapse
I’ve got the same version of firmware and software and running iOS 14.2. I am stuck on the step where you go to CarPlay -> General and connect to the head unit and the circle never stops spinning.
Does anyone know whether there is a fix in the works to make wired Apple CarPlay just work or if there is a more stable version I can try and roll my unit back to? This is quite annoying.
David201092 said:
I’m on iOS14 and I keep getting a “hardware err, No MFi #” when I try to run ZLink (CarPlay wireless I haven’t seen an official new update from Dasaita.
Anyone else have this same issue?
Click to expand...
Click to collapse
I’m having the same issue as you, have you been able to fix it ???
Mine is flames as well. Sometimes it connects fine. Sometimes not at all, but phone says it is connected to the car via BT.
I did get it to connect today but I need to test more. While it was stuck on Zlink saying connecting, I placed a call (to my voicemail) and zlink connected. Could be unrelated. More testing needed.
Would love to update this to android 10 or a newer official version of zlink.
Anyone else have luck getting wireless Carplay to work consistently? Initially, it did for me on my Idoing PX6 head unit (similar software and hardware to the Dasaita), but I feel like I did something to cause it to stop working. Now, when I power on my radio, my phone connects quickly to the bluetooth and to the AP (wifi hotspot), but ZLink never opens automatically like it should. When I open ZLink manually, it just sits at "connecting". If I disconnect bluetooth on my iPhone and reconnect it twice, then ZLink will sometimes decide to work and do its thing.
I will try the static IP idea. I noticed it was on "low data" mode for the AP, so I disabled that.
I updated firmware to MCU 3.69 and the system update is from 12/15/2020 I think. That didn't help.
I also have a Carlinkit USB adapter, not plugged in, that uses an app called Autokit. I was trying to use that a few days ago and it would eventually work, but takes like 45 seconds to finally connect.
I have tried forgetting my home wifi on my iPhone so it doesn't have to disconnect from it, but that didn't help. The connections all seem to work perfectly and it's just ZLink failing, but it's hard to say.
Hey man How’d You get apple CarPlay to work ? Mine hasn’t worked for 3 months
snake2332 said:
Anyone else have luck getting wireless Carplay to work consistently? Initially, it did for me on my Idoing PX6 head unit (similar software and hardware to the Dasaita), but I feel like I did something to cause it to stop working. Now, when I power on my radio, my phone connects quickly to the bluetooth and to the AP (wifi hotspot), but ZLink never opens automatically like it should. When I open ZLink manually, it just sits at "connecting". If I disconnect bluetooth on my iPhone and reconnect it twice, then ZLink will sometimes decide to work and do its thing.
I will try the static IP idea. I noticed it was on "low data" mode for the AP, so I disabled that.
I updated firmware to MCU 3.69 and the system update is from 12/15/2020 I think. That didn't help.
I also have a Carlinkit USB adapter, not plugged in, that uses an app called Autokit. I was trying to use that a few days ago and it would eventually work, but takes like 45 seconds to finally connect.
I have tried forgetting my home wifi on my iPhone so it doesn't have to disconnect from it, but that didn't help. The connections all seem to work perfectly and it's just ZLink failing, but it's hard to say.
Click to expand...
Click to collapse
How’d you get it to work????
damianmorado said:
How’d you get it to work????
Click to expand...
Click to collapse
Wireless Carplay? The static IP stuff didn't help. The only thing that seems to work is toggling bluetooth connection on my iPhone with the radio after manually opening Zlink on the radio. It still doesn't always work then.
No matter what, the phone connects to both the BT and Hotspot of the radio every time, it just doesn't continue on to Carplay and Zlink doesn't auto-launch or connect after manually launching.
I've used my car a few times after leaving my Oneplus 6T in it, like a permanent connected phone, and it works. Sometimes I have to launch Zlink manually, but other times it has worked for Android Auto without me having to do anything. So far, this is the most convenient solution. I also paid for T-Mobile One Plus to get 20GB of full speed hotspot each month so I can mess around with native Android apps and stuff. Still not sure what I'm going to settle on doing long-term. I just got iOS 14.3 installed on the iPhone so I might go try again.

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