Develop Bugs

Android head unit (Pumpkin KD-C0224) - Sound stopped working via music/video player

Hi All,
I have recently experienced an issue where the sound has stopped working (not going through car speakers) when in music, video or navigation app.
This used to work perfectly.
Sound works normally when CD inserted
Sound works normally when using radio app.
Video app plays video - but no sound.
Music app plays the mp3 tracks - but no sound - can see the progress bar moving along (music (mp3) on SD card - 8GB formatted FAT32)
Also have issue with the BlueTooth - connects to phone but seems to be around wrong way - it appears the head unit thinks it is in phone handset mode when it is not - as result can hear people talking through the car speakers but they cannot hear me unless i toggle handset mode, but then people can hear me talking, but i cannot hear them...
I suspect for whatever reason the audio out is being directed to Blue tooth or whatever
Has anyone else come across this issue, and if so is there a solution?
Device
Pumpkin 2-DIN
KD-C0224
MCU version: MTCB-KLD-V2.02
Model # : S07
Android Version: 4.2.2_01092014

Have you tried making your phone and the head unit forget each other?

NYCAR said:
Have you tried making your phone and the head unit forget each other?
Click to expand...
Click to collapse
Yes I have - same result
Have also tried
- resetting unit - factory reset
- pulling the power on unit for
Whatever the issue it appears to be persistent between boots....
Now there is another issue - won't display the feed from the reversing camera
The head unit switches into camera mode, but displays message "No Signal"

davek76 said:
Hi All,
I have recently experienced an issue where the sound has stopped working (not going through car speakers) when in music, video or navigation app.
This used to work perfectly.
Sound works normally when CD inserted
Sound works normally when using radio app.
Video app plays video - but no sound.
Music app plays the mp3 tracks - but no sound - can see the progress bar moving along (music (mp3) on SD card - 8GB formatted FAT32)
Also have issue with the BlueTooth - connects to phone but seems to be around wrong way - it appears the head unit thinks it is in phone handset mode when it is not - as result can hear people talking through the car speakers but they cannot hear me unless i toggle handset mode, but then people can hear me talking, but i cannot hear them...
I suspect for whatever reason the audio out is being directed to Blue tooth or whatever
Has anyone else come across this issue, and if so is there a solution?
Device
Pumpkin 2-DIN
KD-C0224
MCU version: MTCB-KLD-V2.02
Model # : S07
Android Version: 4.2.2_01092014
Click to expand...
Click to collapse
To offer you the best customer service, we will send you the return address for full refund of your order.
I also have a Pumpkin KD-C0224 head unit and it works really great, does way more than you need it to do. (http://www.amazon.co.uk/Pumpkin-Capacitive-Multi-touch-Navigation-Multimedia-y/dp/B00OB90SOY/)
1. About the sound issue, perhaps there is something wrong inside of the unit.
2. About the Bluetooth, you can try settings-》backup&reset, then do the “factory data reset to see if it can help.
3.About the "No Signal", I have encountered this issue and Pumpkin sent a video instruction http://www.youtube.com/watch?v=lu8maRNrtlk
PS:You can ask for help from Pumpkin and customer service has been very good.

Android 4.4.4 Car Unit S07 sound problem
Hi to all,
I have a similar problem. My device is a Universal 2-DIN, Model: S07
Lately I had a problem with sound coming from sd-card. The quality of sound was good enough for some time and few minutes later, the sound coming only from one speaker, then transfered to another speaker then the listening becomes very bad and suddenly comes back very good as in the beggining.
That was in the past because now there is no sound at all.
More specific:
I have sound in Bluetooth, CD-DVD, Radio and the touching clicks (on device).
No sound at all from the device such as NAVI apps, in 2 sd-card slots and 3 USB's (2 back, 1 front). Of course I see video but without sound and the music plays mp3 once more without sound
I have already done the following:
I opened the device, unplug and plug-in again all the ribbon cables. Factory reset in Android 4.4.4, upgrade to 5.1 lollipop with reset to factory settings again, and finaly downgrade back to Android 4.4.4 with reset to factory settings again. The problem is still the same.
Is it damaged ribbon cable ? or other hardware problem ? because I don't think that is a software problem. Any opinion is helpfull.

Problem About Noise When Playing Music From USB on RK3188 Mini Cooper 4.4.4 HU

Hello, I have installed the HU and my DVD unit is working fine. However, my USB inputs are awful. When I want to listen to music from USB, I hear very very awful sound during songs and could not understand the songs or videos.
Does anyone know what I should do to make it work? Waiting for your reply asap.

no usb audio out since Lollipop update

Hi,
Is there anyone that can help me out of this problem ?
My usb-dac (AudioQuest Dragonfly 1.2) worked fine on my tablet (P600), plug & play,
nice sound.
But not anymore, since the update to android 5.
The control led is still lit (it's now green instead of blue, 44.1 khz instead of 48 kHz)
but there is no sound.
I used 'usb host diagnostic' app, wich tells me the tablet recognizes the dac.
When i connect a mouse to the usb port, this is working.
Is there a way to make the dac work again ?
Or do i have to downgrade to Kitkat again ?
Thanks in advance !
Jo

OK, problem solved.
I downgraded to KitKat 4.4.2 and dac works again.

USB Audio Out on MTCB RK3188 on 5.1.1

Hi All,
I have lately ventured into th Androi dheadunits world and have been really happy the functionality they bring with them.
I am using a USB dac hifimediy to get audio out from the HU. The HU is a HA version and is on 5.1.1
I dont get the generic Android sounds via the DAC. When the DAC is connected i don't get any sounds from HU. I only get any sound play from UAPP. Rest all the apps which play music doesnt output to USB dac even if i am playing low bitrate MP3
Is this behavior expected or there is something that can be done? Thanks in advance
P.S:Thread is already in MTCB general
P.S2: i have the "Prevent audio rout to USB" disabled in Developer options

Surround sound via usb sound card -- is it possible?

Hi!
I'm trying to hook up my shield to an old set of T7900 Inspire speakers. I don't have an AV receiver and would like to get surround sound via these speakers. I'm using a USB sound card that works fine with these speakers using a windows laptop, but when I tried to use the same card with the Shield, I'm only getting normal stereo. I've gone into settings and enabled 5.1 surround (auto and always on), used sources that I know are 5.1-enabled, but to no avail.
I suspect the USB sound card (which is a crappy one I'll admit) doesn't play well with Android. However, I can't find a single sound card that is guaranteed to play well with Android. So...
Do you know of any usb sound cards that work well with Android and support (at least) 5.1 surround, ideally 7.1? Has anyone done something like this with their Shields?
Thanks!

I have a asus xonar u7 USB sound card, but with the shield only stereo is possible. I think for 5.1 vor 7.1 sound we need some special USB driver's for android

Androilala said:
I have a asus xonar u7 USB sound card, but with the shield only stereo is possible. I think for 5.1 vor 7.1 sound we need some special USB driver's for android
Click to expand...
Click to collapse
It has to be the USB thing specifically though, because there's already a setting for 5.1 sound :/

Androilala said:
I have a asus xonar u7 USB sound card, but with the shield only stereo is possible. I think for 5.1 vor 7.1 sound we need some special USB driver's for android
Click to expand...
Click to collapse
Here the same. I try 2 different usb 2 analog mutlichannel audio converter, no success. Only stereo.
nvidia or android need to react to this problem.
Greetings by Idijt

Hi,
I use "Turtle beach Audio Advantage Micro II", that can passthrough 5.1 audio:
With the last Nougat update and Kodi 17 is giving some problems, but Kodi 16 and modified Kodi 17 versions (known as ****ty) it still works fine.