Develop Bugs

[Q] HTC One X USB OTG audio not working on CM 10.2

Can somebody please tell me what's wrong with USB audio out on this phone? It used to work on stock ROMs. I have a USB OTG cable connected to FiiO E17 (USB DAC), but the sound still comes out from the phone speaker. I have installed ALSA, and checked alsa_aplay -l in Terminal, the phone cannot recognize the DAC, but it works when I use the app "USB audio recorder pro". Are there some drivers missing in CM10.2 (Android 4.3.1)?

hy3301 said:
Can somebody please tell me what's wrong with USB audio out on this phone? It used to work on stock ROMs. I have a USB OTG cable connected to FiiO E17 (USB DAC), but the sound still comes out from the phone speaker. I have installed ALSA, and checked alsa_aplay -l in Terminal, the phone cannot recognize the DAC, but it works when I use the app "USB audio recorder pro". Are there some drivers missing in CM10.2 (Android 4.3.1)?
Click to expand...
Click to collapse
Sorry to bump this but I have just come across the same issue, just wondering if you found a solution?

BustaVR6 said:
Sorry to bump this but I have just come across the same issue, just wondering if you found a solution?
Click to expand...
Click to collapse
Turns out to be a bug in CM. You have to pay $10 to buy USB audio palyer pro to get it work. Upside is that this app can handle Hi-res up to 24bit 192khz.

[Q] Car Stereo Unrecognized By S4 When Connecting Via USB

O-for-two...<grumble-grumble> :crying:
Upgraded my factory cassette car stereo to a new one with usb port (no bluetooth), thinking I could both stream the phone's audio and charge the battery via usb.
Well, the battery's levels actually decrease when plugged in, and more to the point, the phone isn't recognized in usb mode in the stereo and quickly goes to radio mode and the phone displays the following message (please see attached screenshot)...
...my phone is stock, not rooted. Stereo is not bluetooth-enabled, and I would prefer to stream via usb than the aux port.
-> Can anyone advise any tweaks or apps that would enable the phone's streaming audio to be played via the stereo's USB mode?
Thanks in advance!

What kind of car? I used to have problems in my Saab.
Sent from my SGH-M919 using Tapatalk

mrbmg said:
What kind of car? I used to have problems in my Saab.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Thanks for the reply.
It's a 4Runner.
Hoping to focus here on how to get the devices to recognize one another...

That's weird. Maybe a driver issue with the stereo? Does it have a hard drive? Never used stereo with usb port. I think my wife's suv has one.
Sent from my SGH-M919 using Tapatalk
---------- Post added at 09:43 PM ---------- Previous post was at 09:39 PM ----------
What stereo is it?
Sent from my SGH-M919 using Tapatalk

mrbmg said:
That's weird. Maybe a driver issue with the stereo? Does it have a hard drive? Never used stereo with usb port. I think my wife's suv has one.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
The stereo is very basic, no hd.
Anyone know of any tweaks/downloads I can make to the phone in order to get the audio properly streamed via usb?

4umexdeeay said:
The stereo is very basic, no hd.
Anyone know of any tweaks/downloads I can make to the phone in order to get the audio properly streamed via usb?
Click to expand...
Click to collapse
I have a similiar radio. No bluetooth but a usb on the front and an audio input on the front. As I understand it the stereo itself can't access the phone this way. It doesn't have drivers to recognize the Samsung phone. Think about it. you plug your phone into your computer by usb but you have to download and install drivers for the two to work together. Mine from the looks of it has Iphone drivers built in but nothing for android. You can probably plug a thumb drive in loaded with music and it'll play. What I do is use a stereo cable from headphone output on the phone to the audio in on the stereo. If I need to charge it I have the standard car charger for that.

4umexdeeay said:
Upgraded my factory cassette car stereo to a new one with usb port (no bluetooth), thinking I could both stream the phone's audio and charge the battery via usb.
Well, the battery's levels actually decrease when plugged in, and more to the point, the phone isn't recognized in usb mode in the stereo and quickly goes to radio mode and the phone displays the following message (please see attached screenshot)... [/B]
Click to expand...
Click to collapse
Youre doing it wrong
The reason the battery is decreasing is the amount of current drawn from the device. Either the radio is not strong enough to supply the right current or the phone is recognizing it as a computer and limiting the draw to 500ma. My rough estimates show that the phone uses closer to 750ma while in use just to run. You can verify how much power it is drawing with this simple application https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
You could try to install a kernel that allows you to override the amount of power drawn from the port. I was the first to request the feature and Ktoonsez was nice enough to implement it into his kernel. Now you can set the AC and Computer USB draw to any amount you like.
Secondly, why did you think you could play audio through USB in the first place? I guess it would be possible if the radio supports MTP but then the phone would be acting more like a USB stick and you would have to choose the files manually on the radio itself.
If you really don't want to use an Aux cable then I suggest buying a bluetooth dongle and connecting it to the rear AUX inputs on the radio. They are relatively cheap and you can install it inside the dash never to be seen again.

braschlosan said:
Youre doing it wrong
The reason the battery is decreasing is the amount of current drawn from the device. Either the radio is not strong enough to supply the right current or the phone is recognizing it as a computer and limiting the draw to 500ma. My rough estimates show that the phone uses closer to 750ma while in use just to run. You can verify how much power it is drawing with this simple application https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
You could try to install a kernel that allows you to override the amount of power drawn from the port. I was the first to request the feature and Ktoonsez was nice enough to implement it into his kernel. Now you can set the AC and Computer USB draw to any amount you like.
Secondly, why did you think you could play audio through USB in the first place? I guess it would be possible if the radio supports MTP but then the phone would be acting more like a USB stick and you would have to choose the files manually on the radio itself.
If you really don't want to use an Aux cable then I suggest buying a bluetooth dongle and connecting it to the rear AUX inputs on the radio. They are relatively cheap and you can install it inside the dash never to be seen again.
Click to expand...
Click to collapse
This is all really helpful info, thanks
Yeah, not sure why I thought I could stream via usb either, must've been mixing up the functions of that and the aux cable.
-> So I'm familiar with a bluetooth dongle that connects via usb (...think that would work properly in a car stereo too?) - but you're recommending a dongle that connects internally? Know where I'd find that for sale?

1st, my assumption is you're rooted...?
If no=Boohoo... Root or buy stereo with Bluetooth.
If yes= install this app... https://play.google.com/store/apps/details?id=com.mohammadag.samsungusbmassstorageenabler
Open it, grant it root privileges, click the "mass usb" (I think its called), and profit!
*Music must be on external card.
<-- my thank you is over there

Do you have an auxillary input option on the stereo? 3.5mm jack...
The advantage is that it's guarenteed to work.
The disadvantage is that you can't control the song selection from the stereo. You have to do it from the phone.
Also, could it be there you store the music? If it's on an external SD card I can see where that would fail. Maybe if it was on the internal memory? Remember the car stereo probably isn't real bright. If it doesn't find what it's looking for where it expects to find it, it won't keep looking.
You might have to have it stored in a specificly named directory on the phone too.

4umexdeeay said:
So I'm familiar with a bluetooth dongle that connects via usb (...think that would work properly in a car stereo too?) - but you're recommending a dongle that connects internally? Know where I'd find that for sale?
Click to expand...
Click to collapse
"Internally" meaning it goes inside the dash, behind the radio. Its just a bluetooth receiver with an audio output (either a headphone jack or RCA cables)
If you want listen to music over "USB" you can get certain touch screen radios that will mirror your phones display

4umexdeeay said:
O-for-two...<grumble-grumble> :crying:
Upgraded my factory cassette car stereo to a new one with usb port (no bluetooth), thinking I could both stream the phone's audio and charge the battery via usb.
Well, the battery's levels actually decrease when plugged in, and more to the point, the phone isn't recognized in usb mode in the stereo and quickly goes to radio mode and the phone displays the following message (please see attached screenshot)...
...my phone is stock, not rooted. Stereo is not bluetooth-enabled, and I would prefer to stream via usb than the aux port.
On the bench after testing all the functions and ready to install....
[/URL[/IMG]
-> Can anyone advise any tweaks or apps that would enable the phone's streaming audio to be played via the stereo's USB mode?
Thanks in advance!
Click to expand...
Click to collapse
There is a mod that allows your phone to emulate a usb storage device that would allow you to play music stored on the phone through the stereo you installed, however there would be no controlling any of the sounds, etc via the phone. All the controlling has to come from the stereo itself. Volume, tone, selection, etc. You also need to check the format that the stereo "expects" to see in order for it to be able to function.... Such as Folder size, (files within the folder - how many) How deep the folders are allowed to be set as like in subfolders, etc. What the storage media format is able to be accessed, etc. It gets a little technical and the results are a bit disappointing in the end...
The best I can recommend is a display screen unit that supports using the phone in the USB input. I just installed a Pioneer AVH-X4600BT that works with my (GS4 rooted 4.2.2 Stock ) in my Wife's Subaru Outback. We can plug the phone's USB cable into the stereo (via a Mirrorlink add-on) and run the PHONE using the touch screen of the stereo. You'd be able to run Pandora, answer/make calls, answer/create e-mail and Texting, listen to the music on the phone, watch video that is stored on the phone or DVD's, and most important, NAVIGATION on a 7 inch screen!. All of that though, is dependent on the phone you have. As of yet, the Mirrorlink supports the iPhone, GS3, GS5, and with a hacked app in the phone, it also supports GS4. There is a free app on the market that is called Drivelink which interfaces your phone and the stereo.
You might want to research other stereo devices that have the Mirrorlink application support. I believe Sony has some, but I didn't go past the Pioneer unit. Bottom line, BE SURE TO DO THOROUGH INVESTIGATION ON WHAT YOU WANT TO DO AND THE CONNECTABILITY OF YOUR DEVICES. I know you just bought the unit recently so you just might be having to live with your setup for a while. That's o.k. though, next time you purchase something like that, you will be armed to the gills with knowledge and get something you'll really enjoy.
On my test bench after testing, and was ready to be installed....
Good Luck, and Aloha!

4umexdeeay said:
O-for-two...<grumble-grumble> :crying:
Upgraded my factory cassette car stereo to a new one with usb port (no bluetooth), thinking I could both stream the phone's audio and charge the battery via usb.
Well, the battery's levels actually decrease when plugged in, and more to the point, the phone isn't recognized in usb mode in the stereo and quickly goes to radio mode and the phone displays the following message (please see attached screenshot)...
...my phone is stock, not rooted. Stereo is not bluetooth-enabled, and I would prefer to stream via usb than the aux port.
-> Can anyone advise any tweaks or apps that would enable the phone's streaming audio to be played via the stereo's USB mode?
Thanks in advance!
Click to expand...
Click to collapse
It's doing that because your phone uses MTP as the Media Transfer Protocol. Basically, it kind of mounts like an MP3 player or camera and the new DIN you installed doesn't know what to do with it. The real trick is to get your phone into UMS, USB Mass Storage mode. There's a UMS app in the play store, BUT you have to be rooted to use it. It basically mounts your phone like a regular old thumb drive. Do that and your new DIN will see it no problem. Only thing is, like a USB drive you'll have to navigate into your folders to play your music. This was what I threw in my car and it's been awesome!
http://www.amazon.com/VicTsing-Blue...=UTF8&qid=1397676105&sr=1-1&keywords=victsing
---------- Post added at 04:12 PM ---------- Previous post was at 03:22 PM ----------
4umexdeeay said:
This is all really helpful info, thanks
Yeah, not sure why I thought I could stream via usb either, must've been mixing up the functions of that and the aux cable.
-> So I'm familiar with a bluetooth dongle that connects via usb (...think that would work properly in a car stereo too?) - but you're recommending a dongle that connects internally? Know where I'd find that for sale?
Click to expand...
Click to collapse
I bet I know why you thought you could play audio through USB. It's because Apple products can do it. One of the things that drives me nuts is that most cars with USB ports have audio playback support for Apple devices because of Apple's dock interface that let's the docking component control and navigate the audio. Unfortunately (and it drives me crazy) Google hasn't created a similar interface for Android so there are no Android Docks. Android devices like the S4 in your car rely on on AUX to send audio. It really sucks and Google has committed to addressing it this year in the car but I don't know if they're fixing the underlying problem of a uniform audio interface in android; meaning one where you plug in a dock and it recognizes your phone and how to access your music and playlists. Again, Take a look at this if you need a quick fix. I know you were hoping your new stereo would do it, but you could easily hide this:
http://www.amazon.com/VicTsing-Blue...=UTF8&qid=1397676105&sr=1-1&keywords=victsing

abovenbeyond said:
1st, my assumption is you're rooted...?
If no=Boohoo... Root or buy stereo with Bluetooth.
If yes= install this app... https://play.google.com/store/apps/details?id=com.mohammadag.samsungusbmassstorageenabler
Open it, grant it root privileges, click the "mass usb" (I think its called), and profit!
*Music must be on external card.
<-- my thank you is over there
Click to expand...
Click to collapse
I don't understand, am I missing the post where u said u did this and it didn't work?
This is what u need to do... period. If this app won't work with your rom, find an app or place in the settings to enable "mass storage". The above linked app works for me and many others.

5.1.1 USB Audio problem (in and out) with multiple otg devices

My N7 is being used as a car headunit. I'm having a usb audio issue with multiple devices. With an OTG y cable, I am running an easycap and a UCA 202 w/an amped mic into the inputs. Everything works fine before the easycap is powered. When I swtich intro reverse, video shows up fine. When I shift out of reverse and the easycap powers off, all audio will only play from the internal speakers and I get "Can't open microphone". I have to either reset or dis/reconnect the otg y cable to fix the problem.
I am able to preserve usb audio out if I use the "easycap viewer" app but I cannot get the mic to work at all with the easycap unpowered after the first connection. Mic and audio work fine up until the easycap is powered on for the first time. Interestingly, the Mic will only work when I am in reverse. I figured this out while parked and testing--not really reasonable to shift into reverse on the highway to make a voice command .
Is there a flashable fix? An app? Any workaround?
Appreciate the help. Thanks.
Rom: Stock (LMY48X)
Kernel: Timurs v3 final (I have reached out to the developer and he said that his kernel does not modify the stock android handling of usb audio since it was built into lollipop)

HTC Max 320 Earphones on the HTC 10

Hey, guys! I've recently purchased the HTC Hi-Res Adaptive Sound 2.0 Headset (Max 320). I've tried to use those on the 10 but had no luck. These headphones which use the Type-C input should technically work on the 10 as it supports the "Hi-Res Audio", but all I get when I plug in the Headset is "Accessory not supported". Could this be a hardware issue or a firmware issue? So I wanted to ask if any of you guys have it and if you do, how did you get it to work? I've also attached a screenshot of the message.

ravish_919 said:
Hey, guys! I've recently purchased the HTC Hi-Res Adaptive Sound 2.0 Headset (Max 320). I've tried to use those on the 10 but had no luck. These headphones which use the Type-C input should technically work on the 10 as it supports the "Hi-Res Audio", but all I get when I plug in the Headset is "Accessory not supported". Could this be a hardware issue or a firmware issue? So I wanted to ask if any of you guys have it and if you do, how did you get it to work? I've also attached a screenshot of the message.
Click to expand...
Click to collapse
I'd try going under the developer options of your phone and checking the USB input and changing it to see if that gets you anywhere. It'd be pretty weird if the headphones are phone specific. I have a different pair of USB C headphones that have active noise cancellation that work on my other headsets. As a last attempt, try downloading the free trial of USB Audio Player and see if the headphones work with that app.

mnguyen127 said:
I'd try going under the developer options of your phone and checking the USB input and changing it to see if that gets you anywhere. It'd be pretty weird if the headphones are phone specific. I have a different pair of USB C headphones that have active noise cancellation that work on my other headsets. As a last attempt, try downloading the free trial of USB Audio Player and see if the headphones work with that app.
Click to expand...
Click to collapse
Hey @mnguyen127! I've tried what you told me to do, by changing the input type but it didn't work. I've tried all the options in the developer settings but it didn't work out. Do you have any other ideas?

ravish_919 said:
Hey @mnguyen127! I've tried what you told me to do, by changing the input type but it didn't work. I've tried all the options in the developer settings but it didn't work out. Do you have any other ideas?
Click to expand...
Click to collapse
Have you tried the USB audio player app? That thing has worked wonders for me when it comes to finicky USB C

I'm in a similar situation, and nothing I've tried worked. Now, I saw someone mention something about firmware on another similar thread, so we might just have to wait for when HTC finally decides to update the 10

I have a pair of JBL Reflect Aware C which are USB-C active noise cancelling headphones, but I've noticed that after a certain update, my headphones won't work without the USB Audio Player app. Same thing happened on my Google Pixel which makes me think that if you roll back the update on your phone, you'll probably get audio out of USB-C.

the high-res certified has nothing to do with the headphone Support. the suppor for those headphones are disabled so deep in System stuff, that me and other couldn't get it to work, even with Sound stuff from u Ultra and u11. you can't use them unless HTC supports them on the 10
I still have those from the Bolt when I tested the device. but can't use them. so either HTC Needs to fix it in their Firmware or they don't want it or so. maybe the cables inside are different from other usb c Audio devices so that might be a Problem too

DeeZZ_NuuZZ said:
the high-res certified has nothing to do with the headphone Support. the suppor for those headphones are disabled so deep in System stuff, that me and other couldn't get it to work, even with Sound stuff from u Ultra and u11. you can't use them unless HTC supports them on the 10
I still have those from the Bolt when I tested the device. but can't use them. so either HTC Needs to fix it in their Firmware or they don't want it or so. maybe the cables inside are different from other usb c Audio devices so that might be a Problem too
Click to expand...
Click to collapse
Thanks for explaining it !!!
I guess I'll just hold on to my Brand New HTC U Sonic headphones. What is going on with HTC!!!!!!!

Usb port its not for headphones only for charging go for adapter

Is there a way i can route audio through usb type c?

Hello guys,
I just brought type c audio adaptor for my zuk z2 and when i connect my mi in ear headphones pro to it, It doesn't work, The audio still comes through speakers, it shows some power supply is connected, but can't change it or click it,
So my question is, Is there a way i can route audio through usb type c? Cause i have seen type c earphones working on zuk z2 and is it something related to DAC? I tried enabling "route audio through usb" from developers options, but still no luck and my rom is crdroid, so any workaround?
Thanks in advance

najjurocks619 said:
Hello guys,
I just brought type c audio adaptor for my zuk z2 and when i connect my mi in ear headphones pro to it, It doesn't work, The audio still comes through speakers, it shows some power supply is connected, but can't change it or click it,
So my question is, Is there a way i can route audio through usb type c? Cause i have seen type c earphones working on zuk z2 and is it something related to DAC? I tried enabling "route audio through usb" from developers options, but still no luck and my rom is crdroid, so any workaround?
Thanks in advance
Click to expand...
Click to collapse
If you are using custom ROM, then visit developer options in about phone.
Look for USB Audio routing and enable it.
Something similar to this must be available on stock ROM as well as custom ROMs.

nikhilkaushik said:
If you are using custom ROM, then visit developer options in about phone.
Look for USB Audio routing and enable it.
Something similar to this must be available on stock ROM as well as custom ROMs.
Click to expand...
Click to collapse
There is an option to disable it but not enable it did that, i also did "select usb configuration" to audio, but i think it may work in some other rom or any mods??? But currently it show me something is connected but won't let me change it so i am positive it should work with some tweaks as it detects it but sound still comes through speakers
Thanks for the help anyway ?

I've been doing some searching around about this as well and I've come to the conclusion that I think it is actually something at a hardware level. You see, for audio over usb-c to work, the manufacturer has to decide to allow for the audio pins to be routed the the USB-C port instead of a headphone jack. Now most modern phones seem to support this but the Z2 with its headphone jack seems to not be wired to allow for letting audio be routed to the USB-C port which is why plugging in one of these straight through USB-C to 3.5mm headphone jack converters doesn't actually do anything.
It's a shame since the headphone jack on my Z2 just died and because I can't use an adapter to run my audio through type-c I'm having to buy myself an entirely new phone just so I can have a working headphone jack. Oh well

Hey guys, I know I am 3 years late, if anyone still has this question it IS POSSIBLE to get audio through the usb port, you will need an OTG cable and a usb DAC (not an expensive one, the small ones for pc that take almost no space should work), connect your headphones to the DAC and to the OTG cable and you are done!