Develop Bugs

OTG Cable Answers

Ok guy so I finally got my OTG cable:
http://cgi.ebay.com/Micro-USB-Host-...od=260766327039&ps=63&clkid=63440061151806986
There seems to be alot of questions regarding which peripherals work
List of everything I have tried so far:
Logitec LX3 Optical Mouse: Works Perfectly with no set up
PSX to USB adapter: Seems to only output mouse commands (Left joystick and Dpad works but nothing else)
Wireless USB Adapter - Works perfectly with mouse and keyboard - no set up
USB Flash Drives - Works perfectly , mounts in mnt/usbOTG
USB Card reader(microSD and SD): Works Perfectly, mounts in mnt/usbOTG
Powered USB Hub (7 Port)
Card Reader: Did not mount
Flash drive: Did not mount
Optical Mouse : Works perfectly
When I start trying more things I will post on here and give you an update.

bilago said:
Ok guy so I finally got my OTG cable:
http://cgi.ebay.com/Micro-USB-Host-...od=260766327039&ps=63&clkid=63440061151806986
There seems to be alot of questions regarding which peripherals work
List of everything I have tried so far:
Logitec LX3 Optical Mouse: Works Perfectly with no set up
PSX to USB adapter: Seems to only output mouse commands (Left joystick and Dpad works but nothing else)
Wireless USB Adapter - Works perfectly with mouse and keyboard - no set up
USB Flash Drives - Works perfectly , mounts in mnt/usbOTG
USB Card reader(microSD and SD): Works Perfectly, mounts in mnt/usbOTG
Powered USB Hub (7 Port)
Card Reader: Did not mount
Flash drive: Did not mount
Optical Mouse : Works perfectly
When I start trying more things I will post on here and give you an update.
Click to expand...
Click to collapse
Do you have to be rooted to get usb thumb drives to work? I am not rooted and a wireless mouse will work but I cannot get thumb drive to work.

texasez said:
Do you have to be rooted to get usb thumb drives to work? I am not rooted and a wireless mouse will work but I cannot get thumb drive to work.
Click to expand...
Click to collapse
Yes, you have to be unlocked, rooted and flash a different kernel before this will work. The OP kind of forgot to mention that.
Eventually this won't be the case as I expect this functionality to be enabled shortly by the official SD card update WHEN it finally comes. Haven't rooted yet, trying to keep my unit as stock as possible for development purposes. Being able to do things the general public may not be able to do just makes things harder ATM.

Do you think that they Are going to send me the cable to Argentina?

epakrat75 said:
Yes, you have to be unlocked, rooted and flash a different kernel before this will work. The OP kind of forgot to mention that.
Eventually this won't be the case as I expect this functionality to be enabled shortly by the official SD card update WHEN it finally comes. Haven't rooted yet, trying to keep my unit as stock as possible for development purposes. Being able to do things the general public may not be able to do just makes things harder ATM.
Click to expand...
Click to collapse
I think you're mistaking the OP for a discussion of SD cards in the Xoom. This thread is about OTG cables, which were enabled in the 3.1 update. Or do I have that wrong?
BTW- Just ordered one. Got one suggested in another post from meritline and *suprise* it doesn't work... Waiting again...

Sorry guys, I keep forgetting that not everyone who reads these forums have rooted their Xooms. I am rooted running the latest installment of Tiamat Kernels.
Just an update my testing has stopped since the cable is a POS and broke the first day.

I ordered the Motorola Cam Connection Kit from Amazon and it said it would get here in a month! I wish they would have told me that before I placed the order. I'll probably end up buying one and just selling that one to someone on this forum.
I don't know how much this would help but I found a thread on some .apks for mounting hard drives and other things. Check this out and hopefully it helps you guys mount some things.
http://forum.xda-developers.com/showpost.php?p=13337600&postcount=6

OTG through a HUB

Hey! So i managed my S2 to work with an OTG adapter. Now it recognizes Flash drives, USB mouse and keyboard as well. My problem is though, that i'd want to use both the mouse and the keyboard simultaneously, and later on my tablet as well.
I've got a USB hub which was pretty cheap i guess,
ht tp://itmedia.sk/item-images/other-usb_omega_hub4portSTARpowercapable/it6818_2.jpeg?nc=032
When i connect it to the OTG adapter it lights up, and if there's a flash drive attached to it when i plug it in, the phone recognizes the flashdrive without problem. As soon as i plug in a second flash drive, the light goes off from the HUB and both of the sticks get unrecognized. Also, the mouse nor the keyboard works through the HUB somehow..
I need to buy a specific hub with OTG support or a power hub perhaps? Could anyone help in this? I looked over google and stuff but people seemed to say different stuff at almost every site.. Thanks!!
My Galaxy S has stock 4.0.3 rom with the Syjah S2 4.1.4 Kernel

Phones doesn't support usb hubs.

przemcio510 said:
Phones doesn't support usb hubs.
Click to expand...
Click to collapse
Oh well that's quite interesting. Then you're saying this piece of video could be fake perhaps?
Since i can post links yet, search for this on youtube: USB HUB Support On GALAXY S2
Check the very first video.

I'm convinced that the every phone can handle only one device connected at the same time.

przemcio510 said:
I'm convinced that the every phone can handle only one device connected at the same time.
Click to expand...
Click to collapse
Well, it surely doesn't seem that way, that's why i was asking, since it's possible.

Weird.... i got sgs2 and 4-port usb hub and when i connect 2 pendrives to hub and hub to phone everything works good (i see UsbDriveA and UsbDriveB). If your hub have dc input you can try connecting power supply to this hub. Maybe this hub isn't compatibile with your phone.

[Q] Why won't USB OTG work correctly? (Galaxy Note 2 N7100 x - demo version)

I have a demo Galaxy Note 2, which is running on the Revolution HD 8.0 rom. I flashed the following PIT file;
PIT_N7100_16GB_20121102.pit
The device works perfectly; very smooth, no FC's, the full 10.16GB of system space etc etc. However, one issue I am having is getting USB OTG to work.
When I plug in any one of my 4 USB OTG cables, I get the following;
'USB Mass storage connected'
'USB mass storage unexpectedly removed'
Does anyone have any ideas why this might be happening? I was hoping to use my Note 2 as a portable media viewer for the photos/videos I take on my DSLR. Kind of frustrating ...
Does your device do this at all? Better still, if you have a demo version of the Note 2, does USB OTG work on your device?
Really hope someone can help,
Thanks

There is a fix for that in custom roms try wanam rom 2.8.
I think you may find the flashable mod somewhere in GS2 forum.
Good luck
Sent from my GT-N7100 using xda premium

Your charging port seems to be loose. You may have to change it.
Sent from my GT-N7100 using xda premium

USB OTG works on my device but...
Without a power source I can only see USB sticks and SDCards.
If my hard drive enclosures have an external power source that I hook them up to, then they work too. It the drive is NTFS formated then you have to use Paragon exFAT, NTFS & HFS+ to see it.

Thanks very much for taking the time to reply. I actually ordered and replaced the usb connection port, yet the issue still remains. So I am quite sure it isn't a hardware fault. I'll try and find the mod you have mentioned ...
Just out of curiosity, is there anything else I can flash beyond the pit file, the kernel and the rom? My device is a 'demo' Note 2, so I am starting to think that maybe Samsung put some other firmware file on the device that tells it not to fully mount USB OTG devices (it'd make sense to do such a thing in order to stop customers in a shop loading up their software from a USB stick).
Richard_10 said:
There is a fix for that in custom roms try wanam rom 2.8.
I think you may find the flashable mod somewhere in GS2 forum.
Good luck
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse

Sir, how did you get a demo version of note 2? Do samsung sell them to? Lower price? Im interested.
Sent from my GT-N7100 using Tapatalk HD

I bought it from a guy who was winding up his mobile phone shop business. He had 4 of these things. The mobile phone component doesn't work - but everything else does (apart from USB OTG on my device - v.v.frustrating!).
You can find them on Ebay by searching for N7100x or N7100 demo version.
If anyone else has a N7100x, please tell me if your USB OTG works.The Wanam rom fix is for wakelocks caused by disconnecting a USB OTG device --
My Note 2 doesn't mount USB devices fully in the first place...I'll keep searching in the hope of finding a solution
flatronics said:
Sir, how did you get a demo version of note 2? Do samsung sell them to? Lower price? Im interested.
Sent from my GT-N7100 using Tapatalk HD
Click to expand...
Click to collapse

lohsmith said:
I bought it from a guy who was winding up his mobile phone shop business. He had 4 of these things. The mobile phone component doesn't work - but everything else does (apart from USB OTG on my device - v.v.frustrating!).
You can find them on Ebay by searching for N7100x or N7100 demo version.
If anyone else has a N7100x, please tell me if your USB OTG works.The Wanam rom fix is for wakelocks caused by disconnecting a USB OTG device --
My Note 2 doesn't mount USB devices fully in the first place...I'll keep searching in the hope of finding a solution
Click to expand...
Click to collapse
So the pit file how do you flash it Odin?

jutley said:
So the pit file how do you flash it Odin?
Click to expand...
Click to collapse
Yep, just flashed it using Odin....gave me 16GB instead of the usual 5.3GB that are normally visible on demo phones.

same problem with my unit. please inform me if ever you have the solution. I will do the same if i got the solution.thanks:good:

psychEinside said:
same problem with my unit. please inform me if ever you have the solution. I will do the same if i got the solution.thanks:good:
Click to expand...
Click to collapse
I've tried everything I can think of to get this problem sorted. I am starting to think that it is a hardware issue relating to the fact that the 3G aerial that would normally be powered/connected to the USB connector board is not attached.
As such, the USB power being delivered to USB OTG devices is higher than normal (given that there is no 3G power drain)...so it perhaps overloads and disconnects connected devices.
I have replaced the USB connector board with a hardware revision 0.2 board (the one that came with the phone was a 0.7). I have installed the following files via Odin;
BOOTLOADER_N7100XXDLJ2_422394_REV00_user_low_ship.tar.md5
CODE_N7100XXDLJ2_422394_REV00_user_low_ship.tar.md5
CSC_XEF_N7100OXADLJ2_422394_REV00_user_low_ship.tar.md5
MODEM_N7100XXDLJ2_422394_REV00_user_low_ship.tar.md5
t03g_0907.pit
I don't think there are any other software partitions on the phone that can be overwritten (the phone is therefore 'stock' as far as could possibly be the case with a demo phone).
If you do find a solution, I would be most grateful to hear about it. This is my perfect device for video/picture editing & uploading to Youtube whilst cycle touring (I don't need the phone connectivity when abroad). Although I can work around the USB OTG limitation, it would be incredibly useful to have that functionality.
All the best,
Laurence

me to.. stil looking for this solution. When OTG pluged to my phone, it's rapidly connect-disconnect in 2 seconds x_x
ROM : hawkish extreem 4.1.2
Kernel : Stock

I have another issue. When i plug OTG cable, I can use flash disc and everything is OK. But then, when i unplug and plug in charger, charging doesn't start. I have to reboot phone, and then charges...
Is this normal?
@phablet

Guys i have the same problem i was using the OTG cable perfectly for more than two months but just today it started giving UNEXPECTED ERROR messages..im on stock rom unrooted..when i connect my flash drive it open then it removes unexpectedly.. even tried to format my flash drive.. any solution would be really grateful
Sent from my GT-N7100 using Tapatalk 2

mufaddalezzi said:
Guys i have the same problem i was using the OTG cable perfectldoesn't work with my note 2y for more than two months but just today it started giving UNEXPECTED ERROR messages..im on stock rom unrooted..when i connect my flash drive it open then it removes unexpectedly.. even tried to format my flash drive.. any solution would be really grateful
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Bump
Anyone found a solution yet?
I have the same issue where the flash drive and OTG cable work with my brother's moto g but doesn't work with my note 2. I'm running stock unrooted.

K55V said:
Bump
Anyone found a solution yet?
I have the same issue where the flash drive and OTG cable work with my brother's moto g but doesn't work with my note 2. I'm running stock unrooted.
Click to expand...
Click to collapse
Hi! I have same problem after I flash CM 11, but maybe it's just a concidence. I think it's a hardware problem.
So any one found solution? It's very important function for me in my work.

easy solution
I face the same problem
solution is very simple
go to Play Store
search USB mass storage
or the app name (USB mode switch for SGS1 on CM) by Zatta
then install the app
problem solved

Help , need to get OTG and MHL working simultaneously !

Hi guys,
My galaxy nexus screen has been cracked and it does not respond in 75% of the screen.
I bought a MHL to HDMI convertor on amazon and luckily got the phone UI to show up on my TV
Now since the touchscreen won't work , I need to connect a keyboard or mouse via USB OTG and use it for navigation.
Problem is the Galaxy Nexus has only a single microUSB/MHL port combined into one.
I have no idea how to split the output from the phone to connect to a USB OTG cable and MHL to HDMI adapter simultaneously !
Any help will be appreciated,
The phone is not rooted AFAIK , but may be I'm not sure. It was running Android 4.1 JellyBean when I dropped it on the floor
The phone does show up on my Windows PC and I have copied the photos off it. But I still want to copy contacts and SMS messages.

You tried just using something like Android Screencast from the PC (USB debugging is needed)
Also, some MHL adapters have a USB port in them, for power. Have you tried getting a crude micro USB splitter? Like this one? http://www.replacebase.co.uk/micro-usb-female-to-2-x-micro-usb-male-splitter-2392-p.asp#.URk59JGYOBs
Not guaranteed that would work though. Also, a quick google of what you want brings up some others with the same issue, have you tried to see if any of them have succeeded?

Quinny899 said:
You tried just using something like Android Screencast from the PC (USB debugging is needed)
Also, some MHL adapters have a USB port in them, for power. Have you tried getting a crude micro USB splitter? Like this one? http://www.replacebase.co.uk/micro-usb-female-to-2-x-micro-usb-male-splitter-2392-p.asp#.URk59JGYOBs
Not guaranteed that would work though. Also, a quick google of what you want brings up some others with the same issue, have you tried to see if any of them have succeeded?
Click to expand...
Click to collapse
Good news
I had a spare galaxy nexus in the office and I gently took the screws of both the devices , and just swapped the displays so that I could quickly turn on usb debugging , backup essential stuff and also turn on bluetooth.
Thanks to some assembly videos on youtube ! will share some pics soon

Lenovo A850+ OTG USB cable

Hello, i got cheap OTG USB cable and try to connect two different flash drives, keyboard and mouse without any success. Is there any option to start OTG function. on Lenovo A850+ ??. I try USB OTG Help and Stick Mount apps, but dosent help. I read that Lenovo A850+ support OTG. Thanks in advance for help.

If your tablet supports OTG USB, it should start automatically. At least that's how it is with Galaxy and Nexus tablets. I know that Lenovo usually has their own GUI on top of Android so wonder if they use some custom driver or need something to be enabled in system setting? You better off searching XDA or AndroidForums for your specific tablet to post in that section.
Also, make sure you have a working cable. Can you try it with another tablet or the phone, just to be sure?

vectron said:
If your tablet supports OTG USB, it should start automatically. At least that's how it is with Galaxy and Nexus tablets. I know that Lenovo usually has their own GUI on top of Android so wonder if they use some custom driver or need something to be enabled in system setting? You better off searching XDA or AndroidForums for your specific tablet to post in that section.
Also, make sure you have a working cable. Can you try it with another tablet or the phone, just to be sure?
Click to expand...
Click to collapse
Thanks for answer. There is no option about OTG in system setings. Today i will try with other cable.

Any suggestion what to do ? Thanks for Help