Phone forcing MTP USB Config mode - Samsung Galaxy S8 Questions and Answers

Hello everyone,
I use my s8 to listen through music on my car stereo, which supports Android Open Accessory 2.0, allowing me to use USB to connect the phone to the stereo.
Since the latest update, when I plug in the phone it will not work with the stereo. I found out this was because the USB Config mode in Developer options would switch to MTP.
Switching to Audio Source mode would allow the phone to work, however every time I unplug the phone, it resets the mode to MTP.
Is there any way I can force the USB config mode to stay in Audio Source?
Thanks

Did you find a solution for this? Having the same annoying problems on several phones, most of them didn't even connect to my jvc at all, except note 4/s5 s4 oukitel u16(setting on midi) and now finally my s7 after root ing and 2 weeks of trial and error.. But have to connect 2 times before even getting in android audio mode and switch to audio source several times.. It's so annoying there has to be a good working funftional usb audio output.. Come on...

Related

UG007 ii - rooted, running great

I got a UG007 ii from Amazon for $50. I ordered the original version UG007 but got the one with two microUSB ports, research shows it is the UG007 ii. Very lucky to get a free upgrade, but after reading some other forums also very lucky to not get a *clone*. After reading about clones, and ordering problems, I can report complete success and happiness.
Not many thorough guides and lots of random stabs at getting rooted. Some of the downloads set off my Avira anti virus which was bad, so anything not totally clean was deleted and not used.
DRIVERS: Getting the drivers to work on Window 7 x64bit took some searching and work. I was surprised that both microUSB ports will supply power to the UG007, but only the microUSB next to the microSD slot will work for adb. Also, there is an extra USB section in the settings that allows your device to communicate (at all) with the PC. Wrapping my head around the fact the UG007 ii device defaults to supporting multiple USB host ports, it makes sense there is a switch to reverse the defaults for connecting to a PC. Twisted brain stuff. LOL.
ROOT: Many various methods exist. I found only one root method that worked, and all others I tested failed. After the drivers are working, it is very easy to root using TPSarky-VonDroid-Root.zip. I really like this method installs SuperSU, and I updated it via the market afterwards. I verified root successfully, loaded busybox and terminal emulator via the marketplace.
RECOVERY: I update.zip installed a CWM recovery successfully. The xda member fun_ has this great post for RK3066 devices. Follow the links to CWM-based Recovery images for RK3066 devices and download the UG007_CWM.zip for Ugoos UG007. Aterwards just rename to update.zip and push to /sdcard and install.
During this whole process I used a USB keyboard with small touch pad for *mouse*. The CWM recovery only works with keyboard, but I could have used only a USB mouse on drivers and root setup, because the device has an onscreen keyboard.
Overall the device works great. There are some cons:
First: There appears to be no microphone nor record ability with the stock ROM. I tried lots of bluetooth headsets which play music and movies fine but the microphones failed. I ordered and will try an external USB soundcard dongle later.
Second: There is a security problem because the screen never locks nor sleeps, with one random exception (clicking on items in notifications). The workaround for security is a wonderful application "Smart Lock Free" and its widget to lock/unlock all with one click.
Nothing else really bothers me, so I must say this device is an exciting Android Stick Computer.
Model: rk30sdk
Android version: 4.1.1
Kernel version: 3.0.8+ [email protected] #169 SMP PREEMPT Thu Dec 20 18:07:08 CST 2012
Build number: RK30_ANDROID4.1.1-SDK-v1.00.1015 rk30sdk-eng4.1.1 JRO03H eng.ant.20121220.180742 test-keys
UPDATE ONE: The device is available on Amazon and others. Search for "UG007 ii", verify 2 microUSB ports, verify Android 4.1.1, verify looks same as below:
Afunta(tm) Bluetooth Ug007 Mini Pc Android 4.1 Google Tv Dongle Dual Core Cortex A9 Wifi 1080p RAM 1gb+rom 8gb+3d (2 Micro USB Slots)
Price $56.99 USD from afunta-mall
or
New Version Bluetooth Ug007 II Mini PC Android 4.1.1 Google TV Dongle Dual Core Rockchip 3066 Cortex A9 Wifi 1080p RAM 1GB+ROM 8GB
Price $62.48 USD from geekbuying.com
The above are just two vendor examples, looks exactly like mine. There are many other good vendors. The geekbuying.com guys are interesting because on their website they released a 4.2.2 ROM for this stick. There are also many bad vendors and clones which look different and are not UG007 ii. Your mileage may vary. Good luck.
UPDATE TWO: I have now tested three USB sound cards. The only working USB soundcard, that survives a reboot still working, is the Syba SD-CM-UAUD USB Stereo Audio Adapter, C-Media Chipset, RoHS. With this USB soundcard the audio input (microphone) and output (speakers) work with the UG007 ii. See further information in next post.
I added the USB sound card. Now I am able to use a microphone on the UG007 ii. Great.
The (semi) working device is Syba SD-CM-UAUD USB Stereo Audio Adapter, C-Media Chipset, RoHS The microphone input works, audio output not.
UPDATE: Finally got audio input and output working with this device. Basically, plug and play is not always a reliable method. Instead reboot with device connected and audio in & out works.
I also got another fancy USB sound card from Syba that does not work for input nor output. This one finally worked. This one did **not** work for me. I did little troubleshooting.
UPDATE: After further testing I found this device also works, but sometimes crashes on plug and play. When I reboot with device connected the audio in & out works, and subsequent plug and play works. Typical problems are caused by plug and play device with recorder application open or music player open, or switching devices with plug and play without rebooting.
So, with a microphone connected on the first, I decided to try VOIP programs again. After installing Groove IP, same as before it crashed when launched. However, Talkatone works. It is complicated to get it working. Here is what I did:
Installed Talkatone, In the settings it gives under the *Phone* tab, I selected Call Settings. I changed Start Call on "normal". It was set to "BlueTooth (when available)", but I could never get the microphone working, listening with bluetooth headset and microphone input to the USB sound card. Bluetooth was wierd because I was able to hear on the headset with setting "Bluetooth (when available)" but neither the bluetooth nor USB sound card microphone input worked. Bluetooth devices never show in the Android Sound settings.
Under Android Settings, Sound, Sound Devices Manager. With the above USB sound card connected the options are:
Talkatone working configuration:
Sound input devices: USB PnP Sound Device (***selected)
Sound output devices:
ROCKCHIP HDMI (***selected)
USB PnP Sound Device (not selected)
Note: I switched my audio OUT setting to HDMI and connected a speaker to the back of my HDMI monitor. You, like me, are probably now saying WTF. Yes? While the microphone is working on USB PnP Sound Device it seems the audio output does not work on either of my USB sound cards. However, with Talkatone setup Start Call on normal, the HDMI audio output works with the microphone input on USB PnP Sound Device. LOL
UPDATE: If you reboot with USB sound card connected you can use USB PnP Sound Device output. But, plug-n-play may kill your output until reboot with connected.
I run tests using Music player for audio output, and the Sound Recorder for input. The Sound Recorder application can be *found* on the stick computer in the /system/app folder. It is bundled with the device but I was unable to find a launch icon. Information on Sound Recorder is Version 4.1.1-eng.ant.20121212.085830 Once run, I can subsequently find & run again using search on "SoundRecorder". Also, in the Play market the Sound Recorder Shortcut by Kayan Nurav gives an icon as a fix to launch Sound Recorder.
Using these configurations I can successfully make Talkatone voice calls with the UG007 ii. My voice quality depends on microphone sensitivity. The sound out via HDMI to speakers sounds perfect.
There are still some annoyances. After reboot or re-plugging the USB sound card: if you want Rockchip HDMI output the Android settings need to be fixed (as shown above). I frequently test sound output using the music player and test input with sound recorder because of frequent sound input and/or output failures requiring me to reboot. Definitely a work in progress, yet interesting.
UPDATE: Finally got audio input and output working with these devices. Basically, plug and play is not a good method. Instead reboot with device connected and audio in & out works. I tested a third USB sound card where audio input/microphone does *not* ever work. If you find some, please post further examples of working USB soundcards in this thread.
quick question
i want to use the stick computer as web/ftp server so i only need it on and there is no need to a TV except for the first time i use+configure
does the stick turn on and boot just by plugging the power ??
mf_ said:
quick question
i want to use the stick computer as web/ftp server so i only need it on and there is no need to a TV except for the first time i use+configure
does the stick turn on and boot just by plugging the power ??
Click to expand...
Click to collapse
No, it does nothing with power plugged only. I must first plug HDMI and then power to get boot.
Bob Smith42 said:
No, it does nothing with power plugged only. I must first plug HDMI and then power to get boot.
Click to expand...
Click to collapse
can you please do me a favor (im asking because not connecting to tv avoids extra electricity costs, since android can be controlled trough airdroid)
connecting the HDMI cable only to ug007ii and leave the other side hanging loose without connecting to TV
does it boot ??
mf_ said:
can you please do me a favor (im asking because not connecting to tv avoids extra electricity costs, since android can be controlled trough airdroid)
connecting the HDMI cable only to ug007ii and leave the other side hanging loose without connecting to TV
does it boot ??
Click to expand...
Click to collapse
No. It does not power up when connected only to cable. But, if you turn off monitor and connect cable it does boot.
There is an old hack of putting resisters on DB15 video connectors and plugging into laptop external video ports. What this did was enable new screen resolutions on 1st generation netbook computers. It was something if done wrong could also ruin your video card. LOL
Thinking along the same lines there us surely some way to fake the HDMI monitor connection by hacking an HDMI plug.
Cant Wait
I just got the exact same unit you did I was expecting the UG007 cant wait to hook it up in the AM Thanks for all your postings it will be a great guideline for me.
Thanks Again
Thx, OP, for this thread~! It came in really handy after I purchased the UG007II and I was looking for a way to root and install CWM. I got this for mom for Mother's Day and she really loves it for watching Netflix shows & movies.
CWM for Official UGOOS 4.2.2 firmware
Has anyone else upgraded to the latest official 4.2.2 firmware? I have and it's very good. Smoother, faster, and everything still works, of course. I also got it rooted using the original method for the original Android 4.1.1 firmware.
But I'm having issues with CWM. I installed the original UG007 CWM through the Rockchip flash tool (as opposed to the update.zip method b/c it doesn't work with 4.2.2 anymore) but I can't actually create any Nandroids inside CWM. Things aren't being mounted & recognized correctly.
Does anyone know of any updated CWM recovery for 4.2.2?
i try everithing and cant connect to my pc de UG007 II

[Q]

Hi, This is actually incredible. Before upgrading to Lollipop on Galaxy S5 I was able to plug my DAC (a Dragonfly 1.2) via USB OTG cable into my Galaxy S5 and enjoy pristine usb audio without a single hint of a problem - all apps working - MX Player, Inbuilt Music App, Poweramp etc - all working perfectly.
Then I upgrade to Lollipop, which is supposed to be great for USB Audio, and it doesn't work any more. At all. I am now back to using an app called USB Audio Player Pro, which allows you to use DAC audio devices to connect to headphones and (thank god!) this still works awesomely, but I was really enjoying all my apps making use of my USB audio device and now that has just been screwed over by the update.
There was so much pleasure in just plugging in a usb audio device into the phone via an OTG cable and everything working great, but now I just fall on my knees and shake my fists in the air bellowing "WWWHHHHYYYYYYY??!!!!"
Has this affected anyone else ? I've restarted, factory reset since the update and googled the crap outta this and all I can find are people saying "Yay! USB Audio functionality has been added with Lollipop".
From my perspective, this appears to be balls.
I'll happily downgrade back to the older android OS if its possible just to get this one happy function back.

Phone stuck in Charging Only mode

Hi all,
I got a Mavic Pro Quadcopter yesterday, but I cannot get it to talk to my LG V20.
When I connect to the remote via USB cable the phone automatically switches to "Charging Only" mode. I have tried changing it to MTP (media transfer protocol) in both the pull down menu and Developer Options, but it immediately changes itself back as soon as I open the Mavic Go application.
Can anyone suggest a way to force my phone to stay in MTP mode? I really want to fly my new drone. Arrrgggg!
PS: It works OK on my rooted Samsung S2 9.7 tablet, but it does not fit in the remote mounting hardware. Unfortunately I have the H990DS v20, so root is not an option for me.
reaktor TuT said:
Hi all,
I got a Mavic Pro Quadcopter yesterday, but I cannot get it to talk to my LG V20.
When I connect to the remote via USB cable the phone automatically switches to "Charging Only" mode. I have tried changing it to MTP (media transfer protocol) in both the pull down menu and Developer Options, but it immediately changes itself back as soon as I open the Mavic Go application.
Can anyone suggest a way to force my phone to stay in MTP mode? I really want to fly my new drone. Arrrgggg!
PS: It works OK on my rooted Samsung S2 9.7 tablet, but it does not fit in the remote mounting hardware. Unfortunately I have the H990DS v20, so root is not an option for me.
Click to expand...
Click to collapse
your drone probably dosnt support the TYPE C connection, not the phone itself, im unsure how you could make this work tho, type c is a 3.0 connection, micro/mini usb 2.0. Probably a non-compatible connector for the drone sadly.
Just food for thought
Team DevDigitel said:
your drone probably dosnt support the TYPE C connection, not the phone itself, im unsure how you could make this work tho, type c is a 3.0 connection, micro/mini usb 2.0. Probably a non-compatible connector for the drone sadly.
Just food for thought
Click to expand...
Click to collapse
PROBLEM SOLVED! A software update from DJI fixed the issue. The phone still shows as connecting as 'Charging Only' but it now connects to the drone correctly. Full video and control functions.
There is still a problem where the software crashes every few minutes, but it seems most users experience this bug. I'm hoping a further software update will finally make this device safe to fly.

Unable to use external DAC with S8+

I have no issue getting my Chord Mojo working with the UAPP app on my S8+ but when I try to use band camp, youtube or any other apps it will not route audio to the DAC properly. Note that UAPP uses a proprietary driver for routing data to the extetnal DAC. A notification comes up when connection Mojo to S8+ via micro usb-usb c otg cable(see screenshot below)
I have tried every option in the normal settinsg and developer mode but no matter what it just reverts back to "charge connected device". I have played around with all the USB settings in Developed mode;
Prevent automatic usb routing
Setting the usb device to audio source,
/MTP
Etc
Nothing works.
I even uninstalled UAPP, attached Mojo and opened band camp, still nothing. Worse yet, often it will freeze with Mojo connected and then restart itself or get stuck on the carrier boot screen during restart.
Seems that Android system is not allowing the device to connect properly although I can't be sure. I just want to be able to send all my audio to my exceptional Chord Mojo. Bummer because everything worked fine on S7 Edge running Android 7.0 when I selected MTP under developer options. Unless there's a fix I'll only be able to use Mojo with UAPP.
You should probably post over in the correct forum
Samsung Galaxy S8+
https://forum.xda-developers.com/galaxy-s8+
You have a Galaxy S8 Plus, not a Galaxy S8. That forum is dedicated to same device you have, and while the S8/S8+ are almost identical (in software), more people will be there to help you.
Done.

Android Auto

I'm having an issue getting Android Auto to launch in my Subaru Crosstrek 2018 model. It works when I use my Nexus 6p but not with the Essential phone. I've tried different cables and reinstalling Android Auto but no luck. Anybody else having issues with Android Auto in their car with the Essential phone?
I had major problems getting Android Auto to work with my Essential phone.
At first, I kept getting the red screen of death (something about "do this when the car is stopped and the brake is on"...of course the car was stopped and the brake was on...). The next day (after a phone update), I tried again and could get past that screen. But then it wouldn't connect.
Turns out you have to scroll down the notifications and change the connect mode from USB charge to MTP manually. Once you do that, it quickly connects. Why the phone can't automatically do that for you...I don't know. But I've done this repeatedly now and each time it connects once you change to MTP mode.
(I also have USB debugging on--don't know if that's important as well).
quadcrap1 said:
I had major problems getting Android Auto to work with my Essential phone.
At first, I kept getting the red screen of death (something about "do this when the car is stopped and the brake is on"...of course the car was stopped and the brake was on...). The next day (after a phone update), I tried again and could get past that screen. But then it wouldn't connect.
Turns out you have to scroll down the notifications and change the connect mode from USB charge to MTP manually. Once you do that, it quickly connects. Why the phone can't automatically do that for you...I don't know. But I've done this repeatedly now and each time it connects once you change to MTP mode.
(I also have USB debugging on--don't know if that's important as well).
Click to expand...
Click to collapse
Android Auto doesn't kick-in on my '20 Subaru Outback (works on my wife's '19 Nissan Rogue).
Can you specify how to get to this setting. I'm unable to find it...
Thanks
levpri said:
Can you specify how to get to this setting. I'm unable to find it...
Click to expand...
Click to collapse
For the current connection, expand the "usb charging" notification, and it will give you a prompt to the available options - just select what you need. To change the default USB connection behaviour, go to Settings - System - Developer options - Default USB configuration, and select an appropriate connection mode.
kt-Froggy said:
For the current connection, expand the "usb charging" notification, and it will give you a prompt to the available options - just select what you need. To change the default USB connection behaviour, go to Settings - System - Developer options - Default USB configuration, and select an appropriate connection mode.
Click to expand...
Click to collapse
Funny there is no USB charging notification on the top, but in Default USB configuration should it be on File Transfer? Thanks!
I've never had a problem with android auto on mine, though I think I probably did change the default connection mode to file transfer a long time ago (before I had a vehicle with android auto).
You can also try a USB hub. These resolved the problem:
AmazonBasics 4 Port USB to USB 3.0 Hub with 5V/2.5A power adapter
ASIN B00DQFGH80
TP-Link | 4 - Port USB 3.0 Hub | Slim & Foldable Cord Design | Compact Travel Size with Charging Ports | Universal Compatibility - USB Flash Drive, Notebook, MacBook, PC, Chromebook and More (UH400)
ASIN B012B6YQY6
Sorry, I can't post direct links

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