Joying JY-UL135N2 no navigation sound - MTCD Android Head Units Q&A

I've recently purchased and fitted a Joying JY-UL135N2 android 5.1 stereo. Everything is fine besides an odd problem with the navigation.
For some reason I can't get any navigation instruction audio to play, if I open Google maps and choose test audio in the settings it reduces the sound of everything else playing (radio/music) but I can't hear any instructions.
I've checked all the audio settings including the equaliser and nothing seems out of place so I've no idea what's wrong.
It seems to affect all the GPS apps, Google maps, Waze, etc.. The only app that's works is some German one that comes pre-installed.
I thought it might be a problem with the text to speech but with it all updated and set to Google voice in audio settings the problem is still there.
Anyone know what might be causing this?
Edit:
Fixed, seems they shipped it with totally broken software. Needed an firmware update.

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Last google app bugs earphone functionalilty

after last update of google app, my earphone doesn't work. First, I thought that was earphone, so I changed it, but result was the same. So, after various test, I have found it's an option in google app that stops earphone voice (I can ear but my voice don't go).
Could someone test this bug? In practice you must select, in the menu of google / voice / setup OK GOOGLE / use OK GOOGLE from any screen and than you have to use earphone (no bluetooth ).
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Thanl
furb3t said:
after last update of google app, my earphone doesn't work. First, I thought that was earphone, so I changed it, but result was the same. So, after various test, I have found it's an option in google app that stops earphone voice (I can ear but my voice don't go).
Could someone test this bug? In practice you must select, in the menu of google / voice / setup OK GOOGLE / use OK GOOGLE from any screen and than you have to use earphone (no bluetooth ).
I have stock updated rom with no root.
Thanl
Click to expand...
Click to collapse
There isn't really any need for anyone to test, this is a pretty well known bug with this device and has been discussed a fair bit.

Google Play Music isn't working with all songs thru Android Auto, no idea what to do

So i recently got a new phone, and while AA worked perfectly great with my Galaxy S7E, it seems to have a few issues with my Huawei Mate 9 (purchased from Best Buy's website, unlocked US version i assume). It seems its a UI issue Huawei has a problem with across multiple devices as to why phone calls don't show on the AA screen, so i guess there isn't a whole lot i can do about that one, but Google Play Music about 3/4 of the time says the song is playing but i don't hear anything even though the volume is up. Is press my steering wheel controls to move it to the next song, and i have to keep going until i find a song that'll play. I thought maybe it was a cached music issue so i cleared the google play music cache, but nope. Reset AA, reset my headunit, uninstalled AA and reinstalled, pretty much most troubleshooting steps. Thought i managed to fix it last night, but nope. The issue came back this morning. Everything else seems to work fine in AA but that. I stream all my music thru my own library thru google play music so its kind of an important app for me, so its frustrating that this is happening. Everything works fine if i just play music over bluetooth, but doing it thru AA causes this issue and im not sure why. Any ideas? Thanks.

My phone doesn't record audio

Hello,
I just took my first video using the phone today, then I noticed audio is not recorded. I tried several times, both high-res and 3D audio, but there was no audio. Checked both on my phone and my laptop. I even installed Google Camera app, but the video from there still didn't have audio.
Then I used Voice Recorder app to record audio, and interestingly it did not record audio either. 3rd party voice recorder app didn't record audio either!
There is no problem when I call, my voice is heard clearly from the other phone. I checked the permissions of the camera apps / recorder apps, and microphone is ticked.
What could be the problem? This is very frustrating. Please help!
EDIT:
I just installed a 3rd party camera app, took a video, and the app gave a video with audio. Then I tried stock camera app, which also gave audio. Then voice recorder app, which also gave audio. It seems to work now. I didn't do anything special, didn't reboot the phone, etc. I have no idea what happened...
It is quite possible that one of the apps didn't release the connection to the microphone "for whatever reason". If you encounter problems with hardware the first option is reboot. The reason for this is all of the external and internal connections to hardware get reset. Most apps rely on the drivers within the os and sometimes those connections don't get closed because of crap coding or bugs in the os itself.
Most phones will have a hidden self test menu. It is worth a Google to find that code and test the hardware when things go a bit wierd.
Hope that helps.
shivadow said:
It is quite possible that one of the apps didn't release the connection to the microphone "for whatever reason". If you encounter problems with hardware the first option is reboot. The reason for this is all of the external and internal connections to hardware get reset. Most apps rely on the drivers within the os and sometimes those connections don't get closed because of crap coding or bugs in the os itself.
Most phones will have a hidden self test menu. It is worth a Google to find that code and test the hardware when things go a bit wierd.
Hope that helps.
Click to expand...
Click to collapse
Now that I thought about it again, I think you are right. One of my apps might have been in love with the microphone so that it did not allow other apps to use the mic. I have no idea which app had that kind of love, but anyway, yeah thank you for the comment!

[ROM][PX5][HD] Malaysk/Oreo: Some preinstalled Apps disappear just after launching

Hi all,
i have a problem with some apps (e.g. A2DP, DVD, Mediaplayer) on my MTCD PX5 2GB on both the Malaysk 6.0.1 and the new Oreo 8.0.0 Android.
When i want to launch these apps, they begin to load, show the UI for the fraction of a second and immediately disappear. In case of A2DP i can hear the sound from BT shortely until the App-UI went away. So the app seems to work generally but for some reason gets pushed to the background. In Malaysk i had this issue with A2DP, DVD and the preinstalled Mediaplayer, but not with the Radio-App. In Oreo i have the problem also with the Radio-App.
All Apps, which i installed myself additionally like Poweramp, MXPlayer, Pocketcasts, Googlemaps, Sygic are running without problems. Some of the preinstalled apps like Soundsettings, Filemanager or Car/Canbus-Events do not show the Problem.
I also tried to uninstalled my favorite AGAMA launcher and used the default launcher from the ROM but no change.
I can see the disappeared apps when i push the android-task-switching-icon, so they do not seem to be killed, only put to some unusable background-state.
Does anybody have an idea, what could cause this problem?
Thanks a lot
Same problem
Schmonet said:
Hi all,
i have a problem with some apps (e.g. A2DP, DVD, Mediaplayer) on my MTCD PX5 2GB on both the Malaysk 6.0.1 and the new Oreo 8.0.0 Android.
When i want to launch these apps, they begin to load, show the UI for the fraction of a second and immediately disappear. In case of A2DP i can hear the sound from BT shortely until the App-UI went away. So the app seems to work generally but for some reason gets pushed to the background. In Malaysk i had this issue with A2DP, DVD and the preinstalled Mediaplayer, but not with the Radio-App. In Oreo i have the problem also with the Radio-App.
All Apps, which i installed myself additionally like Poweramp, MXPlayer, Pocketcasts, Googlemaps, Sygic are running without problems. Some of the preinstalled apps like Soundsettings, Filemanager or Car/Canbus-Events do not show the Problem.
I also tried to uninstalled my favorite AGAMA launcher and used the default launcher from the ROM but no change.
I can see the disappeared apps when i push the android-task-switching-icon, so they do not seem to be killed, only put to some unusable background-state.
Does anybody have an idea, what could cause this problem?
Thanks a lot
Click to expand...
Click to collapse
I have the exact same problem. anyone knows how to fix it?
Martthor said:
I have the exact same problem. anyone knows how to fix it?
Click to expand...
Click to collapse
Update: The Radio-App works now stable, suddenly while DVD and A2DP are still unusable. I dont know why.
Other Audio-Bug from Malaysk also persisting on Oreo is Volume, Equilizer and Soundpositioning (Front vs. Rear) gets reseted to default after re-launching the car/MTCD. It is quite annoying to re-fresh the front/back-volumesetting everyday, allthough the UI shows the correct user-defined position, i need to change and re-change the volume and it will suddenly flip to the correct user pre-defined value. (may be another thread???)

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