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[Q] USBOTG doesn't work

Hi to all!
Here's the problem that I have.
After upgrading my Xoom (US 3G) to Tiamat 2.1 Hammerhead USBOTG stopped to work. When I try to connect flashdrive via this cable it blinks only once and that's all. The folder USBOtg is empty -> nothing is shown (but I know that there are files). I tried to format flashdrive to various filesystems (NTFS, FAT32) -> no result.
Another strange thing after upgrade is with MicroSD folder. It shows me only old data. All new one that I copied to it via PC it doesn't show at all. AND!!! PC doesn't see the content of folder with name "external" on Xoom but when I copy there files from PC then Xoom can see them.
May anyone advice any steps to return usbotg and microsd in normal working state?
I tried to re-flash Xoom with previous various versions of firmwares (mods) -> the same situation.
BR, akadimka

akadimka said:
Hi to all!
Here's the problem that I have.
After upgrading my Xoom (US 3G) to Tiamat 2.1 Hammerhead USBOTG stopped to work. When I try to connect flashdrive via this cable it blinks only once and that's all. The folder USBOtg is empty -> nothing is shown (but I know that there are files). I tried to format flashdrive to various filesystems (NTFS, FAT32) -> no result.
Another strange thing after upgrade is with MicroSD folder. It shows me only old data. All new one that I copied to it via PC it doesn't show at all. AND!!! PC doesn't see the content of folder with name "external" on Xoom but when I copy there files from PC then Xoom can see them.
May anyone advice any steps to return usbotg and microsd in normal working state?
I tried to re-flash Xoom with previous various versions of firmwares (mods) -> the same situation.
BR, akadimka
Click to expand...
Click to collapse
Two different issues--if you read the release notes with the Hammerhead Rom, Team Tiamat removed the USB Mass Storage enabling that had been in earlier Rom, due to various difficulties. So that means you can no longer use your PC to copy files into the micro sd card in the Xoom, but you can cop files directly to the sdcard using an adapter or card reader. Your Xoom should still have access to the files on your micro sd card at mnt/external1.
The usbOTG works fine for me but it needs the help of an app like USB Mass Storage Watcher OTG or Drive Mount. Both will work. It also helps to reboot with the drive plugged in the first time if you are having a hard time getting the Xoom to recognize it.

Thanx! Drive Mount helped me with recognizing and mounting flash drive (but only after Xoom reboot with drive plugged in). USB Storage Watcher OTG crashes everytime when I start it with drive connected -> with disconnected it starts normally but won't see any after-connected drives. Ssems that I'll use Drive Mount program
As for MicroSD -> even connected directly to PC and copied some files to it Xoom still sees only old data. Any ideas?
BR, Dmitry
Sent from my Xoom using XDA Premium App

akadimka said:
Thanx! Drive Mount helped me with recognizing and mounting flash drive (but only after Xoom reboot with drive plugged in). USB Storage Watcher OTG crashes everytime when I start it with drive connected -> with disconnected it starts normally but won't see any after-connected drives. Ssems that I'll use Drive Mount program
As for MicroSD -> even connected directly to PC and copied some files to it Xoom still sees only old data. Any ideas?
BR, Dmitry
Sent from my Xoom using XDA Premium App
Click to expand...
Click to collapse
Actually, try checking the folder mnt/external1 (1) as this is HC3.2's official mount point. The Microsd mount point is an artifact of an older Rom.

i am using hammerhead rom with tachi kernel.
yup the usb otg not working.
tried both usb watcher and drive mount.

rohit3192 said:
i am using hammerhead rom with tachi kernel.
yup the usb otg not working.
tried both usb watcher and drive mount.
Click to expand...
Click to collapse
Make sure that you are using a REAL usbOTG cable.

A real USB otg cable? What needs to be special about the cable in order for it to work?
Sent from my Nexus One using xda premium

msavic6 said:
A real USB otg cable? What needs to be special about the cable in order for it to work?
Sent from my Nexus One using xda premium
Click to expand...
Click to collapse
This is where I will suggest that you do some research. Start with this forum and then search elsewhere. Just today I have answered this question 3 times. Search on my name and you will see my posts with your answer.

i am using micro usb male to normal usb female.
cable is gold plated and branded.
but others have also mentioned that usbotg not working after they updated to 3.2
though i never tested on 3.1

rohit3192 said:
i am using micro usb male to normal usb female.
cable is gold plated and branded.
but others have also mentioned that usbotg not working after they updated to 3.2
though i never tested on 3.1
Click to expand...
Click to collapse
Your cable will never work because it is not OTG. OTG has a different pin configuration to allow the Xoom to function in usb host mode. If you are handy with a soldering iron you could make one, but why not buy one, they are availble. Here is my Google search for USBOTG Xoom to get you started: http://www.google.com/search?hl=en&source=hp&q=usb+otg+xoom&aq=2s&aqi=g1g-s9&aql=&oq=usbOTG

otg usb write access

OK, I've been able to connect my USB drive to my phone and view movies and files, but today I wanted to write to it and it says permission not supported. I use stickmount and ntfs mounter to mount and have tried es file explorer and astro. Neither will let me transfer files to USB... I have had the sdfix installed forever now, and I can write to my SD card, but just won't let me write to USB through org cable... Any help?

The only USB drives I've been able to use OTG with the M8 are flash drives (which don't require external power). Are you using something that needs power?

I've used powered and an unpowered western digital my passport 2tb harddrives and been able to watch movies off them even in ntfs format, but my ntfs USB flash drive will only read, no write at all... I'm going to try formatting it back to fat 32 and see if I can write to it when I get home. I thought i wrote to it before, but i recently formatted it to ntfs to put a movie on it... I'll post back tomorrow.

[SOLVED]Slightly urgent - Multiple OTG devices on Lollipop

Hi all,
I have a sd card that i want to copy its contents to an external hard drive. I have the following
OTG cable
USB Mains powered hub - This one http://www.amazon.co.uk/Plugable-Te...8&qid=1419902366&sr=1-6&keywords=usb+main+hub
1 tb external hard drive(NTFS)
Micro SD card (Fat32)
Micro sd card adaptor
I have connected the external hard drive and the micro sd card adaptor to the usb hub, then connected the usb hub to the OTG cable which is then connected to my phone, however Stickmount is not recognising the external hard drive, nor is Nexus Media Importer. Does anyone know if this is a limitation wihtin Lollipop (5.01) as it use to work in KitKat.
Should i just go back to KK?
I am rooted and on 5.01
if someone has any ideas please post, as i need to get this sorted wihtin the next few days
Thanks

euqiddis said:
Hi all,
I have a sd card that i want to copy its contents to an external hard drive. I have the following
OTG cable
USB Mains powered hub - This one http://www.amazon.co.uk/Plugable-Te...8&qid=1419902366&sr=1-6&keywords=usb+main+hub
1 tb external hard drive(NTFS)
Micro SD card (Fat32)
Micro sd card adaptor
I have connected the external hard drive and the micro sd card adaptor to the usb hub, then connected the usb hub to the OTG cable which is then connected to my phone, however Stickmount is not recognising the external hard drive, nor is Nexus Media Importer. Does anyone know if this is a limitation wihtin Lollipop (5.01) as it use to work in KitKat.
Should i just go back to KK?
I am rooted and on 5.01
if someone has any ideas please post, as i need to get this sorted wihtin the next few days
Thanks
Click to expand...
Click to collapse
http://forum.xda-developers.com/android/apps-games/23-03-2014-stickmount-v3-01-t1400034 - search that thread/first post for info/possible troubleshooting steps.

beekay201 said:
http://forum.xda-developers.com/android/apps-games/23-03-2014-stickmount-v3-01-t1400034 - search that thread/first post for info/possible troubleshooting steps.
Click to expand...
Click to collapse
To add to this, your portable hard drive is likely formatted in NTFS. Look at the OP in the thread beekay201 posted for instructions on how to handle this.

Thanks for the link..... I placed the files needed into the sdcard root, but it still does not recognise the 2 drives together

You need to provide more detail, like, help us to help you.
This external HDD you got, have you tried to hook it up, without using the USB hub? The external HDD itself, it's self powered, or draws power from the phone (or the hub)?
Paste a logcat to hastebin.com when you connect the HDD or the sdcard to the phone through OTG cable for us to see.
What StickMount version (I mean, literally the version number, not if pro or free) are you using?

beekay201 said:
You need to provide more detail, like, help us to help you.
This external HDD you got, have you tried to hook it up, without using the USB hub? The external HDD itself, it's self powered, or draws power from the phone (or the hub)?
Paste a logcat to hastebin.com when you connect the HDD or the sdcard to the phone through OTG cable for us to see.
What StickMount version (I mean, literally the version number, not if pro or free) are you using?
Click to expand...
Click to collapse
1Tb Samsung Drive - http://www.amazon.co.uk/Samsung-Sli...qid=1419981942&sr=8-1&keywords=1tb+samsung+m3
The drive is self powered
I can connect the drive using the OTG cable, but using ES explorer, when I try to connect to the folder, it says "failed to open files"
Logcats
1. 1tb Hard disk connected - Files were viewable in Astro Manager, but not ES File Explorer - http://pastebin.com/jG00mnLr
2. SD card connected via sd card reader - Files were viewable in Astro Manager, but not ES File Explorer - http://pastebin.com/CSGaCUQv
3. SD card and 1tb HD connected via usb hub - SD card connected but not the HD - Files were viewable in Astro Manager, but not ES File Explorer - http://pastebin.com/UB21JFRG
Stickmount version is 3.26
Hopefully that should be enough

euqiddis said:
1Tb Samsung Drive - http://www.amazon.co.uk/Samsung-Sli...qid=1419981942&sr=8-1&keywords=1tb+samsung+m3
The drive is self powered
I can connect the drive using the OTG cable, but using ES explorer, when I try to connect to the folder, it says "failed to open files"
Logcats
1. 1tb Hard disk connected - Files were viewable in Astro Manager, but not ES File Explorer - http://pastebin.com/jG00mnLr
2. SD card connected via sd card reader - Files were viewable in Astro Manager, but not ES File Explorer - http://pastebin.com/CSGaCUQv
3. SD card and 1tb HD connected via usb hub - SD card connected but not the HD - Files were viewable in Astro Manager, but not ES File Explorer - http://pastebin.com/UB21JFRG
Stickmount version is 3.26
Hopefully that should be enough
Click to expand...
Click to collapse
right.. if you had searched about this, you'd have found lots of people having issues with L+Es file explorer. use another file explorer, and be done with it.
also, there's nothing wrong with stickmount or the logs. if it works with another FM, i'd just stick with that.
if you want to keep trying ES, be advised that you might need to try the "PIE PATCH" - fixes issues with root access/ES. I'm feelin generous (and bored) so here you go: http://forum.xda-developers.com/google-nexus-5/development/fix-bypassing-pie-security-check-t2797731

Right,i've got it working using the mains power plug on the USB hub. also ES File explorer is also working if i go via the folder structure rather than the left hand side menu.

euqiddis said:
Right,i've got it working using the mains power plug on the USB hub. also ES File explorer is also working if i go via the folder structure rather than the left hand side menu.
Click to expand...
Click to collapse
Good.
@euqiddis please edit thread title to include "[SOLVED]" i.e. "[SOLVED] - Slightly urgent - Multiple OTG devices on Lollipop".
Thanks in advance.

USB otg trouble

Hi, I have problem with USB, I buied USB 3.0 adata 64gb, and USB otg kabel everything worked fine, I was able to see USB in settings - storage, but then I use USB with Windows and then I tried USB in android again and I can't see it in settings storage, I can see it in some different name in file explorer and speed is much slower than before.. and it keeps saying that USB is disconnected, I tried format in Windows but didn't work.. I can only format to ntfs and exfat, I can't format to fat32.please help what should I do to get same effect as before-speed and that I can see it in settings , thanx

Bought*

Yes and before I can use USB in car radio now it doesn't work..

Again awesome feedback on troubleshooting thread

I fixed problem, mounted by stickmount and formated with program to fat32, thanx for help ?

[Q] Mi 4i USB OTG Not Working

Hi,
I am extremely sorry if this is not the right place to ask this.
I got my Mi4i on the first flash. As soon as I got the phone, I did the MIUI 6.5.3.0 (LXIMICD) update. I did not check the USB OTG before the update, so not sure if it worked before the update or not. When I tried USB OTG, the Mount USB storage option is greyed out - always. I tried 2 different USBs and 2 different cables - still no luck. I am starting to suspect if its something wrong with this ROM release, as lots of areas in the setting is greyed out for me (for example, in the Headphones and Audio effects settings, the equalizer settings are always greyed out). So, have any of you tried USB OTG on MIUI 6.5.3.0? Any insights?

Yes I can assure u that USB OTG is working fine on MIUI 6.5.3.0
Check if the USB is a fat32 or ntfs?
Ntfs file system doesn't work with mi4i
Format the pen drive in fat32 and try again
I also tired a sd card reader it works brilliantly
Audio settings will be greyed out until u plugin headphones. Try any earphones or headphones then check if it still is greyed out

sharan.nyn said:
Yes I can assure u that USB OTG is working fine on MIUI 6.5.3.0
Check if the USB is a fat32 or ntfs?
Ntfs file system doesn't work with mi4i
Format the pen drive in fat32 and try again
I also tired a sd card reader it works brilliantly
Audio settings will be greyed out until u plugin headphones. Try any earphones or headphones then check if it still is greyed out
Click to expand...
Click to collapse
Thank you for the reply but I am still facing the issue...
Yes, the file system is Fat32 and the mi4i is still not recognizing the USB. Since the USB OTG is working fine for you, I suspect my OTG cable might be damaged ( weird- I tried 2 different cables).. Maybe I should try a different OTG pen drive?
PS: You were right about the audio settings, those worked when I plugged in the headphone..

same problem here.keyboard and mouse working but no usb drive with same otg cable. Otg card reader also not working.

Godinhell said:
same problem here.keyboard and mouse working but no usb drive with same otg cable. Otg card reader also not working.
Click to expand...
Click to collapse
If you're USB or SD Card is of huge capacity it may take time to load so I would suggest you to wait for a while, Android checks if the storage has an errors. It doesnt show in MIUI though. But wait for a while after plugging in.

NOT ABLE TO CREAT USER IN MI4I MIUI 6.5.3.0(lximicd)
Hi,
I am using Mi4i. In that phone I am not getting option for user or guest creation.
Other lollipop anroid version phones version having that option.
Please help me out for this.

sharan.nyn said:
If you're USB or SD Card is of huge capacity it may take time to load so I would suggest you to wait for a while, Android checks if the storage has an errors. It doesnt show in MIUI though. But wait for a while after plugging in.
Click to expand...
Click to collapse
Iam trying to use a 16 gb pendrive in fat32. And its not showing up for me as well. Help?
Sent from my Mi 4i using XDA Free mobile app

I have sandisk otg 64gb and it works without an issue. Make sure it is formatted with FAT. Other FS like exFAT and NTFS wont work, not sure about Fat32 though.
Hope this helps.

I bought a new 16gb Sandisk 3.0 OTG usb and its working fine for me now.

What's working:
* FAT formatted USB flash drives
* USB Mouse
* USB Keyboard
What's not working:
* NTFS formatted USB flash drives
* Portable USB hard drive
* USB Gamepad
I have an OTG cable lying around. Will soon test Linux file systems (ext2, ext3, etc.). Give me more suggestions, and i'll test it on the Mi 4i.
Sent from my Mi 4i
Hit thanks if I helped!

i just bought sandisk 32gb dual usb 2.0. This is working fine but showing the same drive i.e internal storage of the phone. is it a bug or normal?
Sent from my Mi 4i using XDA Free mobile app

update : it's working fine now.
Sent from my Mi 4i using XDA Free mobile app

stivinnaura said:
What's working:
* FAT formatted USB flash drives
* USB Mouse
* USB Keyboard
What's not working:
* NTFS formatted USB flash drives
* Portable USB hard drive
* USB Gamepad
I have an OTG cable lying around. Will soon test Linux file systems (ext2, ext3, etc.). Give me more suggestions, and i'll test it on the Mi 4i.
Sent from my Mi 4i
Hit thanks if I helped!
Click to expand...
Click to collapse
Aren't there root apps which enable ntfs support by installing a ntfs-3g driver?

The functionality is kernel-baked and not all kernels support the ntfs-3g driver. Also Xiaomi seems reluctant to release its sources anytime soon. There are alternatives like Stickmount however.
- Hit Thanks :thumbup: if you found it useful!
- Sent from my Mi 4i

OTG
i am not able to tranzfer files frm internal storage to usb flash drive via OTG on mi4i.. In Miui file explorer mount usb doesnt open up, if i use es file explorer i am able to view files, mount & Unmount, but cannot copy from internai to USB, BUT the reverse is posssible, I.e, i can copy frm usb flash to internal storage. pls hlp friends

Is the USB FAT32 formated? Because it supports only FAT32 formated flash drives.

Mi4i can not copy from internal to usb otg storage
Actually I got the same problem.
I can not copy some files from internal storage to my usb otg storage. It said "failed EACCESS".
Could someone help me out?
nandaleo72 said:
i am not able to tranzfer files frm internal storage to usb flash drive via OTG on mi4i.. In Miui file explorer mount usb doesnt open up, if i use es file explorer i am able to view files, mount & Unmount, but cannot copy from internai to USB, BUT the reverse is posssible, I.e, i can copy frm usb flash to internal storage. pls hlp friends
Click to expand...
Click to collapse

I tried to mount my memory card by connecting to a card reader and then to OTG cable but it gets disconnected after a short time. Showing message "USB removed unexpectedly ".I tried to connect it using a different OTG cable and a different Card Reader but the problem remains the same.Anyone please help me.

same problem here

Ahtisham Wani
can you explain what problem are you facing exactly?