[Request] Fixing MHL - Samsung Galaxy Nexus

As some of you may know, MHL is one of the main issues of GNex. There are many occurrences of the problem, broken cable, broken MHL adapter, broken phone, forgetting to connect the power cable, etc. But the most specific one is a software problem. The dreaded reboot is one of the specific clues. Whenever you've connected the power cable to the adapter and adapter to the GNex, as soon as you plug the HDMI cable, your GNex will boot endlessly until you've removed the HDMI cable.
The strange thing is, this mostly happens with SD-04 devices as far as my research. Some ROMs fixes this problem, like bigxie's Android 4.2.1 JOP40D: Rooted Busybox Deodexed. But noone really understands why this ROM enables MHL, whereas normal ROMs breaks this feature.
Any help from experienced developers would be most appreciated. And if you have any info that can help to solve this problem, please add your feedback.

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[Q] Question new unlocked GSM, USB charging issue

Ok so i ordered my new phone directly from google on tues and i got my phone thursday. I am having some issues with different micro usb cables not connecting and charging it. I know that some of my other cables work with the phone and some dont. Is there something wrong with my phone or did samsung ever so slightly change the cable to make it proprietary? Also the speaker is really weak are there any mods for it or just flashing a different rom is the only way to improve it. thanks for any help guys
crackzattic said:
Ok so i ordered my new phone directly from google on tues and i got my phone thursday. I am having some issues with different micro usb cables not connecting and charging it. I know that some of my other cables work with the phone and some dont. Is there something wrong with my phone or did samsung ever so slightly change the cable to make it proprietary? Also the speaker is really weak are there any mods for it or just flashing a different rom is the only way to improve it. thanks for any help guys
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Click to collapse
Any microUSB cable should work with this phone (I sometimes use my cable from a Huawei phone) - Samsung hasn't done anything to make it proprietary in any way.. How well do these other cables work with other microUSB devices? What exactly happens when you try to use these other cables (e.g. partial connectivity, no connectivity, etc.)
luftrofl said:
Any microUSB cable should work with this phone (I sometimes use my cable from a Huawei phone) - Samsung hasn't done anything to make it proprietary in any way.. How well do these other cables work with other microUSB devices? What exactly happens when you try to use these other cables (e.g. partial connectivity, no connectivity, etc.)
Click to expand...
Click to collapse
I have a skyrocket and the other cables charge it just fine. with the nexus i am getting no connectivity at all.

[Q] 11 Pin MHL + USB OTG

Hey folks, im crossposting this, as i believe it didnt get the attention it'd have had i posted this in the accessories forum in the first place
http://forum.xda-developers.com/newreply.php?do=newreply&p=30249692
dennisfisch said:
Hey there, i have tried gathering information about this subject and it seems all threads always lead to this announcement:
http://www.gottabemobile.com/2012/06/29/galaxy-s-iii-new-mhl-connector-also-enables-usb-on-go/
Short: Samsung have changed to an 11 Pin-out to enable USB OTG and MHL Hdmi out at the same time. I purchased an original HDTV Adapter (EPL-3FHUBEGSTD) which as far as i can reliably count indeed has about 11 connectors inside the USB connector that goes into the phone.
Now, i can get HDMI out just fine, but ONLY when i also connect the MHL adapter to a power source (a PC USB Port will do fine), however i have also read, that the phone is able to power the MHL adapter itself but obviously would not be charged then (no surprises there). This does not work however.
Further, connecting a USB OTG cable to the micro usb port on the MHL adapter does nothing. No notification and no devices connecting. No power either, since the LED on my USB Hub does not light up as it should. Connecting any devices to the hub does nothing to change that situation. If i leave out the MHL adapter and connect the USB OTG cable directly to the phone, everything works perfectly. I have tried this with 2 different OTG cables so they are not the problem.
This is an original genuine HDTV Adapter for our phones, which according to that post should be working fine with USB OTG.
AFAIK, this topic --does-- come up more frequently now as i can find a few more discussions about it, albeit none really helpful:
http://android.stackexchange.com/qu...-of-11-pin-mhl-connector-in-samsung-galaxy-s3
http://forum.xda-developers.com/showthread.php?t=1743128
http://forum.xda-developers.com/showthread.php?t=1803079
http://en.wikipedia.org/wiki/Mobile_High-Definition_Link#11-pin_MHL-USB_Connector
http://forum.xda-developers.com/showthread.php?t=1811435
That wiki entry is the most interesting link as it definitely states that using MHL and USB OTG simultaneously is possible and is also the reason why the 5 pin layout was changed to an 11 Pin layout.
Looking forward to reading your replies!
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Click to collapse
Still waiting for USB OTG and MHL at same time. And while I'm thinking about it, I want it all in a dock compatible with my seidio active case. How's that for wishful thinking?
Sent from my SPH-L710 using xda app-developers app
nightwinn said:
Still waiting for USB OTG and MHL at same time. And while I'm thinking about it, I want it all in a dock compatible with my seidio active case. How's that for wishful thinking?
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
I don't see why you would feel the need to ridicule me for bringing up this thread. it's not wishful thinking, seeing as even the wikipedia entry on MHL clearly states it should be possible. There is also a blog entry on the exact same topic and even the movement to boycott samsung accessories have stopped because of this: http://www.galaxymhl.com/
I don't really understand why people aren't looking into this more.
I'm not ridiculing you. I want the same thing. What I said was my legitimate wish list. I haven't bought the mhl adapter because I'm holding out for an all in one solution. I'm still waiting on Samsung to give us a product that does mhl and otg simultaneously.
nightwinn said:
I'm not ridiculing you. I want the same thing. What I said was my legitimate wish list. I haven't bought the mhl adapter because I'm holding out for an all in one solution. I'm still waiting on Samsung to give us a product that does mhl and otg simultaneously.
Click to expand...
Click to collapse
I'm sorry, i must have gotten that wrong. I find it very confusing Samsung do no release enough information on this in order to make it work. Neither the phone documentation, nor the official 11-Pin HDTV Adapter manual mention this in any way.
I'm waiting also for a dock with MHL+USB OTG at the same time by Samsung, I dont understand why the official MHL adapter does not support this already but I've been searching and I have not found yet any example of both working together. It clearly seems that the MHL 11 pins cable we can buy right now does not support this since nobody has tested it succesfully but what I don't know is if that is related to Hardware or it also has something to do with software. I read a couple of weeks ago that Google was thinking about using the phone as a PC via docking, I think the idea comes from Motorola? So maybe the availability of both connections at the same time is also related with android, who knows, maybe in JB it will be possible...Has somebody tested MHL+USB OTG in JB with the official adapter?
Tularis said:
I'm waiting also for a dock with MHL+USB OTG at the same time by Samsung, I dont understand why the official MHL adapter does not support this already but I've been searching and I have not found yet any example of both working together. It clearly seems that the MHL 11 pins cable we can buy right now does not support this since nobody has tested it succesfully but what I don't know is if that is related to Hardware or it also has something to do with software. I read a couple of weeks ago that Google was thinking about using the phone as a PC via docking, I think the idea comes from Motorola? So maybe the availability of both connections at the same time is also related with android, who knows, maybe in JB it will be possible...Has somebody tested MHL+USB OTG in JB with the official adapter?
Click to expand...
Click to collapse
As soon as i get home, i will try flashing this rom: http://forum.xda-developers.com/showthread.php?t=1695562
It comes with the latest stock kernel and appearently won't boot with anything else so Samsung must have made some changes to it. In a few hours time I'll be back with information on how that worked out.
I can confirm it NOT working on Jelly Bean. The MHL adapter does provide video HDMI output, but only as long as it is plugged into an external power source. When connecting an OTG usb cable, there is no reaction at all. There has to be some way of getting the phone to power the HDMI adapter. Do any of you folks have a good link to a kernel dev who can have a look into this? There has to be a MHL modul for the USB driver. Ghokanmoral probably has more insight into this...
Summary: USB OTG and MHL work fine separately, but not simultanously on JB using a standard genuine Samsung EPL-3FHUBEGSTD adaptor.
dennisfisch said:
I can confirm it NOT working on Jelly Bean. The MHL adapter does provide video HDMI output, but only as long as it is plugged into an external power source. When connecting an OTG usb cable, there is no reaction at all. There has to be some way of getting the phone to power the HDMI adapter. Do any of you folks have a good link to a kernel dev who can have a look into this? There has to be a MHL modul for the USB driver. Ghokanmoral probably has more insight into this...
Summary: USB OTG and MHL work fine separately, but not simultanously on JB using a standard genuine Samsung EPL-3FHUBEGSTD adaptor.
Click to expand...
Click to collapse
Thank you for trying, well I dont know what to think now...very bad samsung fot not giving information about it...
Enviado desde mi GT-I9300 usando Tapatalk 2
I have already contacted Ghokanmoral on this and am hoping to gain new insight into this as he is a very active kernel dev.
I'm also crosslinking another thread on this subject: http://forum.xda-developers.com/showthread.php?p=30469240
The final result of this is that USB OTG work with the Samsung dock, but not otherwise...and that is why they changed the pins to 11. For the dock to allow for OTG at the same time as HDMI out. Does everyone agree?
ZenInsight said:
The final result of this is that USB OTG work with the Samsung dock, but not otherwise...and that is why they changed the pins to 11. For the dock to allow for OTG at the same time as HDMI out. Does everyone agree?
Click to expand...
Click to collapse
I don't really know how this is accomplished with the dock, but if it works with the dock, I have to think that the same technique could be used to make it work with other adapters, too. If it's a matter of putting a voltage or a resistance across two pins, that would not be a big deal to do.
It was figured out in the thread that this was split off of.
we already found the resistor value to do it, the wiring.. everything.
Anyone try...
Anyone try a usb Y cable which will inject power over a USB and still allow for a separate device to be attached? I would post a link but i'm noob here. You can find it as "UTStarcom USB Adapter Y Cable"
The HDMI part of the split HAS to be powered...but the USB OTG does not. So...if there was such thing as an 11 pin micro usb Y splitter, then the OTG side would work while the powered MHL adapter was on. Essentially this is what the dock does.
Is it possible to create an 11 pin Y splitter? Someone needs to get one of those docks and tear it apart to see how the leads are split...lol
ZenInsight said:
The HDMI part of the split HAS to be powered...but the USB OTG does not. So...if there was such thing as an 11 pin micro usb Y splitter, then the OTG side would work while the powered MHL adapter was on. Essentially this is what the dock does.
Is it possible to create an 11 pin Y splitter? Someone needs to get one of those docks and tear it apart to see how the leads are split...lol
Click to expand...
Click to collapse
You can also power the dock with a laptop dock from motorola: http://forum.xda-developers.com/showthread.php?p=33825819
scarrmrcc said:
It was figured out in the thread that this was split off of.
we already found the resistor value to do it, the wiring.. everything.
Click to expand...
Click to collapse
Can we have a link?
surferpr said:
Can we have a link?
Click to expand...
Click to collapse
I think it's this one (at least the potential resistor values are on page 3 or 4)
http://forum.xda-developers.com/showthread.php?t=1811435
Sent from my SPH-L710 using Tapatalk 2
hi guys. i was able to make usb otg and mhl work together just like smart dock.
full description is here
http://forum.xda-developers.com/showthread.php?t=2142357

Need OTG Advice/Information

Hello,
Long time lurker. First time poster.
I have a 10.1 Note Model # SM-P600 that I have set up in my car. Currently, the charging works fine via micro USB to engine/ignition accessory. Now that I have the initial steps completed, I am looking to add more stuff to the setup. I purchased a USB hub in order to connect a few different devices (USB DAC, External HDD, Camera, etc) along with a few different OTG cables. So far, I have not had any luck charging the device (although, I am able to access devices connected to the hub via the OTG cable). I understand that this is a common problem, and it seems that it has been solved on some devices (Nexus 7) by installing different kernel's and USB ROMs (not sure what this is?). However, I have only seen one bit of information in regards to the SM-P600, and that is the BinDroid kernel that I have found here:
http://forum.xda-developers.com/showthread.php?t=2615959&highlight=otg
I flashed the kernel correctly (I believe, I see the kernel information showing up in my device information), but I am still not having any luck getting the device to charge while having the other pieces of equipment attached. Can anyone give me some good solid info on this problem? I thought I'd be able to install the kernel and that would fix my issue, but maybe I'm missing a few steps? Do I need to install something else? I am currently on the stock ROM, version 4.3. I was thinking about putting CM10.x on the tablet, but I don't think that it's supported...? I need a bit of clarity on that as well.
Please help if you can. Thanks!
P600 needs 2A current. I think when you attach other equipment to the USB hub, it may not be able to provide enough current to note so it will not charge. I am not an electrical engineer so someone with more knowledge can of course prove me wrong :laugh:
Generally when your device is connected with an OTG cable, your device is working in as a USB host supplying power to the devices. In your case, your Note will try to supply power to the USB hub. Even if your USB hub is powered by a separate adapter, your Note will not attempt to charge as it is in USB host mode.
You might wanna take a look at this mod.
http://forum.xda-developers.com/galaxy-s3/general/hw-mod-usb-otg-charging-galaxy-s3-t1953061

HDMI output with CM13?

Hello everyone,
I've been loving this phone since I first got it. Put CM13 on it. One thing I'm wondering though is if HDMI output is supported on custom roms like CM13, or if I have to stay on the stock rom in order to obtain this.
Any help is greatly appreciated.
Bump to see if any info turns up.
I bought a 2nd SlimPort adapter to see if it was just the adapter that was acting up. Still don't seem to be getting any sort of reaction from the phone. I don't know if it's just not supported, or I need to run some sort of command to initiate the HDMI output. The phone is receiving a charge through the adapter, just not feeding any video out.
noting yet???

Is it possible to charge my Note 4 whilst also accessing USB via an OTG cable?

I have a USB OTG cable that I can use to connect USB devices like flash drives, keyboard etc. and that works fine, but for some reason my phone won't charge whilst the OTG cable is plugged in.
Am I missing some really obvious way of getting this to work? Is it software based? I'm rooted and running Lineage OS if that makes any difference. I've tried several different OTG cables, I've tried connecting to different power supplies, different USB cables, different outlets, I've tried going into developer debug settings - nothing seems to get it to charge and data at the same time.
I am also interested in the topic. Trying to run Octoprint for Android and charge at the same time. I bought an OTG Y cable and the problem is that the phone is either charging or communicating with the 3d printer. Never both at the same time. I've researched quite a bit on google and it turns out at least on some devices the required effect can be achieved but I haven't been able to find anything about huawei devices. It is most probably a software limitation.
The same problem but i have Samsung J5 2017, i have rooted device so there is option to modify system files
Gosh! Would love to get this working. Any news?

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