[Q] USB functionality - G Pad 8.3 Q&A, Help & Troubleshooting

Hey there,
my G Pad is currently running the nightly build of CM11 (updated on Jan. 20).
I wanted to try out the external USB functionality. Despite the fact that the tablet does not support additional external power while using the USB host, PCap for Android doesn't work due to the fact, that the ALFA Wifi adapter (RTL8187 chipset) doesn't show up as USB device properly. Actually it's a bit strange.
My USB Hub, external Keyboard and my mouse are working as they should. Mass storage is also showing up. These devices seem to be handled correctly by the operating system. The problem is, I can not use the external Wifi adapter, because PCap tells me, it can't find any USB devices.
I installed the app 'USB device info' which is devided in two parts. The 'Linux' tab shows all devices (including the external Wifi adapter). It uses /sys/bus/usb/devices to determine what kinds of devices are connected to the tablet. Just like lsusb (shows all devices as well including the Alfa network adapter) everything is correct.
The other tab of 'USB device info' called 'Android' doesn't show any devices.
Could anyone explain what's the difference between those two tabs ('Android' and 'Linux') and why the devices are not visible in 'Android'. I guess the operating system is hiding the device, and that's the reason PCap capture is not able to find it.
Thank you guys.

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Iconia a500

Frequently Asked Questions
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Q: ICONIA Tab A500 Addendum - First Start Information
A:
Charging your tablet
For first-time use, please charge your tablet for at least four hours. After that you can recharge the battery as needed.
Turning on your tablet
To turn on your tablet, press and hold the power button for two seconds.
Downloading your tablet's User Guide
To download the User Guide, go to www.acer.com and select your region. Select Drivers & Downloads, Tablet (in the Product Family list), ICONIA TAB, and then the model of your tablet.
Select the Document tab to see a list of guides.
Updating your tablet’s operating system
Your tablet can download and install system updates, adding support for new devices or expanding software options.
To check for updates, tap Apps, Settings, About tablet, System update, Check now.
Downloading new software can take up to 40 minutes, depending on your network speed.
Connecting USB devices to your tablet
USB devices are supported, such as a keyboard or USB storage, through the Host USB port. Please check for updates to the tablet's software to add support for additional USB devices.
Your tablet only supports USB storage devices and microSD cards that use the FAT or FAT32 file system.
Accessing files on a USB storage device
You can access media files (photos, music and video) on USB storage devices with your tablet's multimedia apps.
Please note you can only save photos and videos to internal memory or a microSD card, not an external USB storage device.
Connecting to Bluetooth devices
For Bluetooth settings, tap Apps, Settings, Wireless & networks, Bluetooth settings.
Tap Find nearby devices to scan for and connect to available devices.
Only A2DP stereo headsets (without microphone) are supported. Please check for updates to the tablet's software which may add support for additional Bluetooth devices.
Connecting to a PC as a USB storage device
Connect your tablet to your PC with the supplied USB cable. After a short delay, your tablet’s internal memory will be visible as an external drive in your computer’s file explorer.
Note: You may need to install drivers from the Acer support site.
Transferring files from a microSD card (optional) to your PC
Remove the card from the tablet and use a card reader or USB adapter to access the card as an external storage device.
Connecting to the Internet via Wi-Fi
Tap Apps, Settings, Wireless & networks to manage your connection settings.
Turn Wi-Fi on, and wait for your tablet to detect nearby networks. Tap the name of your network and enter a security password, if required.
Downloading Adobe Flash Player
Visit the Android Market to download Adobe Flash Player:
Tap Apps, Market.
Using Acer clear.fi
When using an external USB storage device, the device may not be recognized for a few minutes.
The Acer clear.fi video player only plays MP4 files. Please check for updates to the tablet's software which may add support for other types of video.
lou0611 said:
Only A2DP stereo headsets (without microphone) are supported. Please check for updates to the tablet's software which may add support for additional Bluetooth devices.
Click to expand...
Click to collapse
Just found this out. Tried sending some files from galaxy S running Darky 10 B5.3 (android 2.3.3.) and unable to send file. Device does not allow connection.
spaanplaat said:
Just found this out. Tried sending some files from galaxy S running Darky 10 B5.3 (android 2.3.3.) and unable to send file. Device does not allow connection.
Click to expand...
Click to collapse
Yes, but I cant Apps 2 SD
lou0611 said:
Connecting to a PC as a USB storage device
Connect your tablet to your PC with the supplied USB cable. After a short delay, your tablet’s internal memory will be visible as an external drive in your computer’s file explorer.
Note: You may need to install drivers from the Acer support site.
Click to expand...
Click to collapse
This is actually using MTP, connecting as a mass storage device on Linux could require additional steps. MTP support on Linux ain't that good (IMHO)
lou0611 said:
Yes, but I cant Apps 2 SD
Click to expand...
Click to collapse
Haven't tried this yet, but why would you? It has 27 GB storage and more if you add micro-sd. Or is the internal sd split-up in several partitions?
spaanplaat said:
Haven't tried this yet, but why would you? It has 27 GB storage and more if you add micro-sd. Or is the internal sd split-up in several partitions?
Click to expand...
Click to collapse
I have the 16GB version, plus the power cord is short and cant be charged via USB/MicroUSB
spaanplaat said:
Haven't tried this yet, but why would you? It has 27 GB storage and more if you add micro-sd. Or is the internal sd split-up in several partitions?
Click to expand...
Click to collapse
Convince me to keep this over the Asus TF
lou0611 said:
I have the 16GB version, plus the power cord is short and cant be charged via USB/MicroUSB
Click to expand...
Click to collapse
Yes, power chord could've been longer.
Charging it using standard USB 5v is not feasible. That would burn USB port
maddler said:
Yes, power chord could've been longer.
Charging it using standard USB 5v is not feasible. That would burn USB port
Click to expand...
Click to collapse
I see youre from Rome, I myself was born in Italy, but live in US.
Anyways how do I charge it in my car?
When the hell are we getting our own Place for the Iconia, come on XDA, get your heads out.
lou0611 said:
I see youre from Rome, I myself was born in Italy, but live in US.
Click to expand...
Click to collapse
Well, you aren't missing anything! Well, beside good food!
lou0611 said:
Anyways how do I charge it in my car?
Click to expand...
Click to collapse
Best choice could be a power inverter. You should be able to get one for a few bucks.
maddler said:
Well, you aren't missing anything! Well, beside good food!
Best choice could be a power inverter. You should be able to get one for a few bucks.
Click to expand...
Click to collapse
Yeas I have one

3G's USB port seems to work with everything

Hi,
In january/february, i bought a USB keyboard with an USB adaptater to use it with my tablet.
I tried to plug it in the 3G's usb port, it did'nt worked, and because last week I broken it, and I updated my tab to ICS, I tried to plug my keyboard in the 3G port, and it worked !
Maybe it's because of ICS ?
Also, my keyboard has also an usb hub, it works too !
Mine seemed to work from the the start with Rom version: 3.2.69 and that's on 2 different G9 101, however others result have varied and it seems a bit hit and miss to say exactly what's going on.
I know there are 2 different versions of the 10" G9 - A101S and A101H , I've not dug too deep into it and I'm not 100% and what the differences are.
I think ICS generally improved the Usb Host support/integration which is always welcome.
Now I just need a large bag to transfer all these extra devices for my "portable tablet".
Mine won't see USB drives/camera cards formatted to FAT32. No big deal.
Actually, it did connect with my phone and its 16GB microSD card, so I'm happily mistaken.
From the ICS "firmware" update change log:
Archos 80/101 G9
Firmware changes
Version 4.0.4 - March 8th, 2012
Initial Ice Cream Sandwich 4.0.3 firmware release
MediaCenter Video: support for MKV3D on TV with automatic switch to best 3D mode
MediaCenter Video: allow to disable system notifications in video player
MediaCenter Video: collection of VOB files from DVD are now gathered into a single movie item
MediaCenter Music: integrate Music control panel in Lock Screen
MediaCenter info dialog: allow to edit the name used for performing the Movie and TVShow online search
File Manager: display a notification when file copy continues in background
File Manager: improved drag and drop support
File Manager: new option to prevent indexing of some storage/sdcard folders by multimedia library
Applications: more robust video conferencing support (Google talk, Skype etc.)
USB file transfer: a samba server is now activated on the tablet when using USB network tethering for easier file transfer on non Windows based hosts [Samba for "non Windows"??? Something bass-ackwards about that ...]
Archos widgets: new USB network tether widget [Anyone know if this means it will tether off a phone this way ala older Archos models like the 5 or 43 , or is this meant to "share" its internet connection (however it would obtain it, even if not "3G-enabled" - which seems useless)]
External Keyboard: french layout has been expanded to handle AtlGr keys for special symbols
Accessories: Xbox gamepad support
Maybe I shoulda hung on to the new 80 I bought a week ago, and returned after trying it out for a few days. The inability to get the back/3G USB port and MTP tools to work was a big factor in my return decision (along with no network tether option as the 5 and 43 had, and the reality check on the initial Staples web page claiming 1GB RAM - hope springs eternal...)
FWIW,
R
@rokkywoof I think that it's for the micro usb port, because this oen is meant to be an OTG micro usb port, and the original usb port is just for the 3G, but maybe they failed and applied the stuff to the 3G's port?
@Telyx/trevd wow that's strange !
I saw that the A80S (A101S) are the archos with flash memory (8 or 16gb), and the A80H/A101H are the archos with the Hard drive (H for Hard drive )
Telyx said:
Mine won't see USB drives/camera cards formatted to FAT32. No big deal.
Actually, it did connect with my phone and its 16GB microSD card, so I'm happily mistaken.
Click to expand...
Click to collapse
Is this true? This is the main reason why I was planning on getting this tablet this week because it is (or so I thought) that would have been able to transfer raw files from my CF cards to the internal hd, and backed up on an external HD. I shoot about 300gig a week while on the road.
Sent from my PG86100 using Tapatalk 2
It works fine... just have to turn on the "3G Stick" port, then wait a moment before plugging the camera, phone, thumb drive, card reader, etc. in. One camera connects like a thumb drive (mount the "drive" manually and open the folder in the file explorer), the other launches the Gallery app to allow me to import pictures.
Telyx said:
It works fine... just have to turn on the "3G Stick" port, then wait a moment before plugging the camera, phone, thumb drive, card reader, etc. in. One camera connects like a thumb drive (mount the "drive" manually and open the folder in the file explorer), the other launches the Gallery app to allow me to import pictures.
Click to expand...
Click to collapse
Thank you thats what I needed to do turn on 3G in settings and now it all works
3G's USB seems to work with nearly Everything
Hi @ll,
I also tried to get USB devices to work, no problem with USB-Sticks, but USB-HDD's (selfpowered) seem not to Work (neither on Stock image nor on Cyanogenmod). The HDD starts turning but Android doesn't mount it. Can someone give me some pointers?
My Specs:
Archos G9 80 Turbo HDD with an USB-HDD (USB 3.0 (should be backwards compatible)) by Toshiba
Thanks
I would bet the tablet is not able to supply enough power to actually start the USB HD up.
Remember that usb port was designed to be used with Archos' 3G cell stick and really wasn't meant to be hooked up to other things.
If the port is enabled, there is allways power for the hdd, also for a stick a mouse. But some keybords may not work (I don't figure it out).
The app USB OTG Helper will help to mount the hdd/stick.
I used a friends powered usb hub (dlink dub-h7) and was able to use both my keyboard and mouse with my tablet unfortunately my usb thumb drives dont work when attached to the usb hub however they do work when attached to the hub I didnt have my powered usb hard drive with me to test
Powered Hub
usb2lan-adapter?
Hi,
Just bought a G9 101 turbo to play with.
stock 4.0.25 ROOTED flashed and it's hanging nice on my tv.
Can anyone tell me/give me advise if there's any usb-lan adapter that works?
Would love to use a cable instead of the wifi...
THANKS!
--- EDIT ---
- Found something:
http://android.stackexchange.com/qu...between-an-archos-g9-android-4-0-wifi-and-a-l
- probaly will get me a thing like this:
http://star01.en.made-in-china.com/product/UqjmkZcOATri/China-USB-1-1-LAN-Card-Adapter.html

[Q] USB Mass Storage

Has anybody been able to get USB Mass Storage working ?
There are no devices that use mass storage anymore since like 4.1.2. Everything has switched to MTP. This is everywhere on the internet and id bet on XDA.
Sent from my GT-N5110 using XDA Premium HD app
trialsrider1 said:
There are no devices that use mass storage anymore since like 4.1.2. Everything has switched to MTP. This is everywhere on the internet and id bet on XDA.
Sent from my GT-N5110 using XDA Premium HD app
Click to expand...
Click to collapse
Well, my Galaxy S2 has Android 4.1.2 and both USB mass storage and MTP
Sent from Galaxy Note 8.0 GT–N5100
I use one of these http://www.2leef.com/store/product/bridge/
Works fine on The Galaxy note 8 and Galaxy note 3 with Astro File Manager.
stevejau said:
I use one of these http://www.2leef.com/store/product/bridge/
Works fine on The Galaxy note 8 and Galaxy note 3 with Astro File Manager.
Click to expand...
Click to collapse
It seems to be just an usb pen with 2 connectors
Sent from Galaxy Note 8.0 GT–N5100
I've found the USB Mass Storage handy for specific items and recently I was trying to recover some files (Via Android Restore program) that only worked if there was a USB Storage option, MTP wouldn't work. I have tried some apps on the app store, but none of them work to activate USB Storage. Was hoping their was a work around
gabripranzo said:
It seems to be just an usb pen with 2 connectors
Sent from Galaxy Note 8.0 GT–N5100
Click to expand...
Click to collapse
Yep, that is all it is..and as i said it works fine with Astro File manager..I have not tried it with Root Explorer or any other file manager as yet, but Astro does the job well.
Their website does say it is compatible with Galaxy note 2 amongst others and I can vouch that it works great with Galaxy Note 8 and Note 3.
Cheers
Steve
USB
Maybe I'm missing something here.
My USB 128GB stick works fine with my OTG cable.
I've just ordered a micro USB reader for micro SD cards from meenova.
Will let you know how it works when it arrives.
Shofar1 said:
Maybe I'm missing something here.
My USB 128GB stick works fine with my OTG cable.
I've just ordered a micro USB reader for micro SD cards from meenova.
Will let you know how it works when it arrives.
Click to expand...
Click to collapse
We're talking about connecting an android device using mass storage and not MTP protocol. USB otg has nothing to do with this.
Inviato dal mio GT-I9100 utilizzando Tapatalk
gabripranzo said:
We're talking about connecting an android device using mass storage and not MTP protocol. USB otg has nothing to do with this.
Inviato dal mio GT-I9100 utilizzando Tapatalk
Click to expand...
Click to collapse
Not sure how connecting a pendrive (otg or not, and btw it is very likely that the the microusb port on the pen-drive is also otg ) does not violate the above the same. When the note 8 acting as a Usb mass Storage Media is the main concern.
now back to topic,
Like it or not of companies have decided to do away with UMS. It basically boils down to architecture issues with their future plans.
UMS Gives exclusive access to the HOST (your computer or what ever you connect your device as Media to) and thus android/phone has to unmount the volume to prevent any locks or other potential issues (which are many including security).
Also the Host (your computer) has to be able to read/write the Files System format that you phone/ sd card is formatted to. (it's a dependency, because if the tablet where to use/ invent some new native file system, a lot of existing hosts might not be able to read them at all.
There are other reasons too like singular large ultra fast storage blocks to act as file systems as well RAM which can break if requiring unmounting,
Now MTP is not god send either and has it's own set of issues (read below)
however it's evolving.
with MTP most of the control is with your tablet or phone. and data is not written to the media directly by the host in for form for Blocks, but rather as files etc and thus the slowness as speed also depends a lot on your device not to mention it's biggest drawback that it's sequential/synchronous.
Personally, If i need to do large transfers etc, I just remove my microsd card in put that it into a tiny card reader, not ideal but works.
It is very unlikely that we are going to be getting UMS officially from those who are done with the standard on similar devices, . Maybe some better alternative in future than MTP, but who knows.
Here is little extract from the wiki : http://en.wikipedia.org/wiki/Media_Transfer_Protocol
for who care about the how's and the why's
History
The main purpose of this protocol is to allow only the transfer of media files and associated metadata to and from portable devices, one transfer function, in or out, at a time. Productivity functions such as open, edit and modify require copying to the hosting system for these functions then copied back in their entirety to change the data.
The protocol was originally implemented for use across USB but extended for use across TCP/IP and Bluetooth. Windows Vista supports MTP over TCP/IP. Windows 7 and Windows Vista with the Platform Update for Windows Vista also support MTP over Bluetooth.[7] The host connecting to an MTP device is called an MTP Initiator whereas the device itself is an MTP Responder.[8]
A main reason for using MTP rather than, for example, the USB mass-storage device class (MSC) is that the latter operates at the granularity of a mass storage device block (usually in practice, a FAT block), rather than at the logical file level. In other words, the USB mass storage class is designed to give a host computer undifferentiated access to bulk mass storage, such as compact flash, rather than to a file system, which might be safely shared with the target device (except for specific files which the host might be modifying/accessing). In practice, therefore, when a USB host computer has mounted an MSC partition, it assumes absolute control of the storage, which then may not be safely modified by the device without risk of data corruption until the host computer has severed the connection. Furthermore, because the host computer has full control over the connected storage device, there is a risk that the host computer may corrupt the file system, reformat it to a file system not supported by the USB device, or otherwise modify it in such a way that the USB device cannot completely understand it.
MTP and PTP specifically overcome this issue by making the unit of managed storage a local file rather than an entire (possibly very large) unit of mass storage at the block level. In this way, MTP works like a transactional file system - either the entire file is written/read or nothing. The storage media is not affected by failed transfers.
In case the device maintains a database/index of the content of the disk, MTP saves the cost of re-scanning the entire disk every time the content is modified.
Additionally, the MTP allows MTP Initiators to identify the specific capabilities of device(s) with respect to file formats and functionality. In particular, MTP Initiators may have to provide passwords and other information to unlock files, or otherwise enable digital rights management. Nothing specific of this nature is in the core standard but the features are available via vendor extensions. MTPZ, the Zune Extension to MTP specifically denies access to files until authentication has been processed, which is only possible using Windows Media Player 10 or higher.
Drawbacks
No multitasking - Unlike USB mass storage, MTP has been built to only allow a single function at a time, e.g. read, write, delete, with no other function available until the first function is complete.
By design, MTP devices (like PTP devices) are not treated as a traditional removable drive. The actual file system is implemented by the device, not by the computer's operating system. In theory the operating system may hide this difference, but this is not the case on Windows or Mac OS.[clarification needed] This also means that file system recovery tools on the computer will be of no use if the drive is corrupted, or crashes.
As of 2013, MTP is much less widely-supported than USB Mass Storage (see support section).
The MTP and PTP standards do not support direct modification of objects. Modified objects must be copied out of the device and reuploaded in their entirety, which can take a long time for large objects.
Google's MTP implementation in Android includes extensions to deal with this limitation.[9][10]
Windows/PC MTP implementation:
When opening a file, the user must wait till the file has copied to the PC before it can be viewed. (Note: The file remains on the PC hard drive after viewing and the device is removed)
No creation of files on the device from the PC, files must be created on the PC and copied over.
No editing of files on the device, files must be copied off the device before edits can be saved and file copied back.
Click to expand...
Click to collapse
As a workaround, for PC users at least, there is a Total Commander plugin which displays the MTP folders in normal file panel. It does not provide all the UMS features, like say binary directory sync (lack of which is one of my biggest griefs with MTP), but it's useful for simple file operations (browsing, copying etc.)
If anyone's interested I'll try to find the link/instructions.
Sent from my GT-N5100 using XDA Premium 4 mobile app
Sorry.. Wrong thread
trialsrider1 said:
There are no devices that use mass storage anymore since like 4.1.2. Everything has switched to MTP. This is everywhere on the internet and id bet on XDA.
Sent from my GT-N5110 using XDA Premium HD app
Click to expand...
Click to collapse
And I can tell you, my brother is SERIOUSLY pissed. He's all ready to go smack around a few people at Google for this (once he's done smacking a LOT of people at Microsoft, now that his new machine is saddled with MSWin8).
In truth, it seems very arrogant on Google's part to presume that no one would want/need to use USB storage mode. My brother would like to edit files on the Note8 while it's attached to teh computer (using LibreOffice on the computer to edit it), and he feels it's absolutely preposterous that he has to copy the file down, edit it, then copy it back up. Google, 1985 wants it's broken methodology back.
Drive Droid
Pda23 said:
Has anybody been able to get USB Mass Storage working ?
Click to expand...
Click to collapse
DriveDroid on the play store at least.
I haven't yet had a reason to check if the Note will work, but does work on a Galaxy3 with Cyanogenmod. It goes and mangles the drivers to support the depreciated mass-storage proto. Expect it to be hit-and-miss when changing roms, requires root, requires kernel to no have completely disabled the old drivers. I now carry a recovery cdrom on my phone, it's worked most of the time.

Chinese crane 3G N708 android unit - what WiFi dongle?

Hi there. I found a number of info about similar systems, so may be you can help with quite a simple question.
I've got a chinese unit to be built in the car running Android 4.0.4 (yes, it's a while ago). It has not yet a WiFi device built in, but supports an external adapter to be connected to USB - therefore it has a dedicated cable, I guess OTG.
I tried already 2 different WiFi Dongles having USB interface - without success. So I'd like to know WHAT SPECIFICATION such a dongle should have before I just try buying others. (The actual models have WiFi built in, so the sellers of these things have no longer "such dongles" to sell.)
I have the following information:
Seems to be a modell named crane-3G (does that make sense?)
Modellnr: N708
Android 4.0.4
Is there alternatively a way to make another adapter work? I can install APK files using a memory card. But, sorry, I'm not familiar with installing devices on an android system...
Thanks, if you can help!

Can't use USB in car

I had the Nexus 6P (with Android 7) and plugging it into the USB worked with my 2011 Camaro (it is not Android Auto, the Head-unit basically will see the phone as a USB Storage device, mount it, index the files, and I could then use my car's controls to search, change tracks, etc).
I broke my phone and turn it in on warranty, and end up getting the Pixel XL as replacement, and upgrade it to Android 8.
Now when I plug it into my car, I get a "No supported media found" message on my car's display. I have tried with and without USB Debugging, going into the the developer options and changing the "Select USB Configuration" to MTP, Audio Source and still the same. I would also have this issue with Samsung phones, and could never get them to work.
I am not sure if this is an issue with Pixel's, or with the Android 8 update, since my Nexus 6P with Android 7 worked fine
you need to use the otg adapter that came with it
So I have to get a standard USB-USB cable to connect the adapter to my car?
I thought this adapter added functionality, so my phone can mount drives, not the other way around? Doesn't make since that something that has worked so well on the past 3 phones (except for Samsung for whatever reason) now no longer works without another piece of hardware. Not what I would call progress
So I ordered another cable and am using my OTG adapter, and it still does not work.

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