Did anybody else noticed when having the tablet docked and the dock is charging the tablet, USB functions are disabled?
I am running ICS on my transformer prime. Normally I plug in my pendrive (FAT32) into the dock and android finds and mounts the drive. The light on the pendrive starts blinking as usual.
When the dock is charging the tablet and I plugin the pendrive, the light flashes once and nothing happens.
Just wondering if others experienced the same, or if it's just me (or my pendrive)
a different pendrive does not help btw.
Related
My Nook charges fine when turned off but does not charge at all when powered on. My nook also does not show up as a connected device when I plug it into my computer. I am rooted running CM9. Any advice?
Thanks
mikenexus said:
My Nook charges fine when turned off but does not charge at all when powered on. My nook also does not show up as a connected device when I plug it into my computer. I am rooted running CM9. Any advice?
Thanks
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IF you mean that it doesn't charge while the screen is on and connected to the PC, that's normal behavior... the current draw is too much for the USB port to maintain the operational draw as well as provide any extra to charge it. Most of the time, you'll notice that you're actually still losing charge even though it's plugged into the PC... albeit at a much slower rate than usual.
As far as it not being recognized... what do you mean? You don't get the drives mounted? It's not being recognized by ADB? There's plenty of threads related to ADB, try giving it a search. If you mean that the drives aren't being recognized, you have to have a SD card in and turn on USB Sharing (or whatever it's actually called) it should be in the notification area.
Thanks for the reply,
It does not charge from an outlet while powered on; only when powered off.
What I mean in regards to it not showing up on the PC: I plug it in and it does not even recognize a device is plugged in - I don't even get to the install new drivers part. Its as if nothing was ever plugged to begin with.
The nook is recognized when I use my galaxy nexus usb cord and attach it to the computer. I am starting to think this is a hardware issue; I just find it strange that the hardware works as intended while the Nook is powered off.
Mike
There's a chance that you have a broken Nook cable then.
Try getting a battery monitoring app to see what sort of current you're getting while it's on. Is the "n" on the cord lighting up while it's plugged in and on?
Yes, when it is on and plugged in the "n" is green no matter the charge
I think you should try a different Nook cable, they can do that for you at B&N's actual store without you having to buy a new cable. If that doesn't work I would wager that it would be the port.
Now, I feel I should point out that for reasons unknown to me that manual specifically says you should not plug the unit in to charge while the unit is off. As I said, I don't know why. I know I have done that with my iPhone when I need a really fast charge (plug it in, then turn it off) but never had to do that with the Nook. Just... Some FYI for you.
I have an i777 (AT&T). I would like to root it. When you connect the micro USB cable, the phone starts to act strangely. First, you cannot charge the phone through the cable (I have to use an external charger and keep switching batteries). When you connect the cable, the phone does the following: every six seconds the black and white battery charging icon appears in the middle of the screen (the one that you see when the phone is off), and stays there for a split second. Then the screen is black until the battery icon appears again. The phone cannot be used while the cable is connected.
There are ways to send files to the phone (Kies Air) that let you work around the cable issue. But does anyone know how to fix this USB cable problem?
Thanks.
DO not charge your phone with it
Seems like your USB port is damaged and you can damage the internal parts by giving a fluctuating power supply
Hi. I have the same problem. Could you fix it? Charging and data transfer can be solved (external battery charger - airdroid) but I do not know how to root it. Is there any wireless way to root the device? Thanks
I'm looking to be able to use my external HDD (1TB WD passport) on my phone via OTG. As I understand, ntfs support varies with kernels etc but I'll cross that bridge when I come to it as I think there's a more fundamental problem.
I've got an OTG cable, and my mouse, usb pen drive, keyboard etc work with it. The HDD doesn't, because the phone can't provide enough power to operate the thing. I thought I could get around this by connecting it via my usb hub (which runs off external mains power) but when I connected this up to the phone and plugged the HDD in nothing happened. Likewise, the mouse and pen drive etc could also not be recognised by the phone when they were each plugged in via the hub (one at a time, I wasn't trying to run 8 things at once!) even though they worked perfectly when the phone itself was powering them when they were directly plugged into the OTG cable (if that makes any sense).
So, assuming it was a problem with the hub, I instead tried the method in this thread http://forum.xda-developers.com/showthread.php?t=1828032 and made my own y type cable so that now rather than the phone providing power to the OTG peripheral, the power now comes from a standard USB phone charger. I'm fairly confident that I did all the soldering correctly and there weren't any short circuits.
When I tried using this, I had the same issue as with the hub. None of the mouse, the pen drive etc could be recognised with the modified OTG cable, which was odd as physically nothing had changed from the point of view of the peripheral plugged into the OTG (the data cables connecting it to the phone were unchanged, and it was still getting 5V power, just from the wall rather than my phone) which makes me think perhaps the problem is a software one where the phone only recognises a USB peripheral/begins USB host mode if the peripheral is actually draining power, since the power leads running from the phone side of the OTG cable are now just an open circuit.
Just to confirm I hadn't just snipped a data cable by accident when modifying the OTG cable, I re-soldered the OTG cable to how it originally was and it worked the same way it had previously. This means all the data cables are still intact, so I think it must be a software issue.
I thought maybe a way of testing this would be to modify the y cable and connect the red and black power cables coming out of the phone to each other via a fairly hefty resistor (so you still get power flowing from the phone even though the USB peripheral is powered by the wall). But it seems a bit dangerous!
Has anyone else had trouble with this? I've read around on forums and for a lot of people USB hubs and y type OTG cables seem to "just work", although I've not seen anyone with an i9300 reporting success. I'm running the latest version of liquidsmooth, but have also tested on CM10.1 and have the same problem. It might be an AOSP thing that stock samsung firmware will fix?
Let me know your experiences!
TLDR: I'm pretty sure I've got a software issue where my i9300 only recognises a USB peripheral/begins USB host mode via OTG if the peripheral is actually draining the phone's power, and so doesn't work when a USB hub or externally powered (y type) OTG cable is being used.
Thank you!
It apparently only supports 500GB regardless of power source
Sent from my GT-I9300 using Tapatalk 2
rootSU said:
It apparently only supports 500GB regardless of power source
Sent from my GT-I9300 using Tapatalk 2
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Click to collapse
Really? That's odd - is that an android limitation or samsung? Either way it still seems weird that my y cable/hub didn't work for the mouse/keyboard, is that something you'd expect?
Sorry I didn't read that part.
I have a portable passive hub. Kb and mouse working fine...
Sent from my GT-I9300 using Tapatalk 2
Hi All,
I'm new to this forum. I have an issue with the USB port on my Xperia Z3 tablet.
It won't charge through the USB port and is not detected by my PC, it also doesn't detect any USB pen / flash drives that are inserted. When the tablet is off and I plug in the charging / data cable a red light appears next to the Sony logo and the battery symbol shows on the middle of the screen but doesn't have the usual lightening bolt icon to indicated charging.
Just so you know I've tried multiple cables that work with my other Xperia tablet.
Any help would be greatly appreciated.
Cheers
Hi guys, I have a problem with my Asus Z380KL tablet. Im want to use this tablet as a head unit in my car and I need to use OTG cable to make it work, also I need to have charging in the same time. I also want to use AutoMate app to control tablet, especially auto on/off while charging/not charging.
And now is the problem, I can easily achieve working external devices (usb dac, FM transmitter and pendrive) with charging in the same time, problem is when I cut off the power from charger tablet still thinks that is charging, of course it cant be cause there is no power source but still I can see charging icon and in settings showing that is still charging. It stop doing that when I unplug micro usb plug from tablet but obviously I cant do it all the time cause tablet will be build in dashboard.
Now, with normal charger, without OTG cable its working perfectly, when I cut off power it stops charging in the same time, also I tried couple OTG cables and on every single one is the same thing.
Any ideas guys how I can fix that? Im not sure if thats software of hardware problem.
Also device is not rooted and it has ASUS oem software with Android 6.0.1.
Thanks guys for your answers and your time! Cheers
Up
Really nobody knows what could be a problem?