Having a strange issue that I am not quite sure why is happening. I've been having a heck of a time attempting to access SD card with USB, as when I would connect it to my Windows Vista 64 Bit system the USB would constantly connect and disconnect, or my phone would simply never recognize that the USB was connected, or in more recent cases it simply goes into a boot loop or loads into the boot loader. On a hunch I decided to disable USB debugging and no more issues, except for I can't use adb obviously. I have been using my computer to customize my kindle fire, I wonder if that has something to do with it, perhaps the USB driver for adb is causing the issue? Has anyone else seen this issue? Solution? Thanks.
Update: I've come to the conclusion that there is a bad connection. I found that if I take the back cover off and connect the USB to the computer, it would work fine, but if I put any pressure on the battery it would disconnect and reconnect once the pressure was removed. I went ahead and sent out for a warranty replacement.
Several people have mentioned that they have host mode connectivity problems. USB devices that are connected to the tablet, via an OTG cable or a USB host adapter, are not (or not always) seen by the tablet.
Some people mentioned that the problem started only after the upgrade to 4.1.2.
In my particular case -- stock rom but rooted -- it works immedeately after reboot but stops working sometime later, a strong clue that it is a software (driver) problem.
This has been going on for a while now. I'm wondering: what is the current status? Did anyone complain to Samsung and got a useful answer? Did anyone send the tablet back as defective?
I know that this theme has been beaten mercilessly, but let's try it again. Maybe someone can help.
I'm looking to breath some life back into my old TF101 with an update to KatKiss.
My serial number starts 037. I'm running 4.0.3 ICS. I have USB debugging enabled. I have MTP enabled. On the computer side, I'm running Win 8.1 on a Haswell i7 16GB with USB 3.0.
I have the original USB cord, and a new 3.0 USB cord from a third-party manufacturer. I've tried both cables. The TF101 itself is well-aged and somewhat beat up, but not beyond use. The cords work for charging.
When I plug the USB cable into the PC, the computer makes a sound, but no device is shown. The TF101 doesn't show that it's connected to the computer. I've looked everywhere: Devices and Printers, Device Manager (there's no "Other Device Listed"), under safely remove devices, and even under Computer Management > Storage > Disk Management. The TF101 is nowhere to be found. The computer does not recognize it.
When I power off the tablet, and try going to APX (or whatever) mode with VOL UP and POWER, nothing happens there either. (The computer shows nothing whether connected through the USB cable while Android OS is running, or while I'm trying to go into APX mode.) I can, however, go into recovery mode (or whatever it would be called) by holding VOL DOWN and POWER. I tried a factory reboot, but that didn't work either. The computer still doesn't see it.
Basically, I've concluded that there's no hope. Given this state of affairs, I cannot root my TF101, and, because I cannot root the tablet, I cannot install custom ROMs on it.
Does that about sum it up? Anybody else have any other great ideas?
I'd very much appreciate any insight anyone could give me.
Install the drivers on this thread and download Easyflasher
http://forum.xda-developers.com/showthread.php?t=1688012
Power off the TF while it is connected to the PC
Hold Power & Vol Up to enter APX mode
Device should be recognised by windows and hear the USB connect sound
Nothing will appear on TF screen
Run the Easyflasher and install TWRP
When done, boot to recovery to check you have TWRP recovery installed
If yes, copy KatKiss ROM to Micro SDCard in TF and flash from TWRP along with Gapps
*Detection* said:
Install the drivers on this thread and download Easyflasher
http://forum.xda-developers.com/showthread.php?t=1688012
Power off the TF while it is connected to the PC
Hold Power & Vol Up to enter APX mode
Device should be recognised by windows and hear the USB connect sound
Click to expand...
Click to collapse
Detection, I appreciate your response! The thing is, when I try to enter APX mode, nothing is recognized by the computer. I don't hear any sound. I don't see any new devices appear anywhere.
Should I conclude that I have the "TF101-is-not-recognized-by-PC Problem"? And, if I do, is there anything else I can do to about rooting and installing a custom ROM?
RJM
In device manager, try enabling "View hidden devices" and see if you can see the TF101 ghost entry, if yes, remove it and then plug the TF back in and see if it's recognised then
If you don't see anything that way, try viewing hidden devices with it plugged in too
There is no reason it shouldn't be detected in APX mode unless you have been unlucky and have 2 dodgy cables, or there is actually hardware damage to the TF
Try installing windows to a virtual machine too, see whether you can get it recognised that way
If you have access to another machine, see if you can get it seen on there to rule out hardware as the issue
Thanks for the reply. I appreciate your interaction very much.
I've tried it on both machines. There is no sign of TF101 anywhere, on either machine, as a ghost or anything else. I've looked under the Android section, as well as under Portable devices and every other list. There's definitely no sign of a TF101. No sign of anything that my TF101 might be posing under.
The only time I get any kind of response by the computer is when I plug the TF101 into the computer when the TF101 has Camera (PTP) mode activated. When I do that, I hear a little jingle. If I have the Device Manager open, it flashes. But, even then, I don't see any sign of it anywhere.
I'm totally stumped. Would there be some clear indication on the hardware that would cause the problem?
By the way, both USB cables charge just fine when I'm using the USB power box. But when using the computer, there is no charge or any other sign of the thing.
If you have any other advice, I'd love to try it!
The power and data connections on the USB lead are separate, so if you have a faulty lead, it could still charge, but not be seen by the PC
Something like this:
1: Power
2. Data
3. Data
4. Power
You won't see the TF charge from PC, it is only a trickle charge via PC, and the TF has to be powered off iirc, or at least the screen has to be off, so you only see the result, not the actual charge
Not sure what having the camera on is doing, I would still lean towards faulty USB cables being the issue even though you have 2 of them
Im guessing that the 2nd cable is a 3rd party cable, not a genuine ASUS TF101 cable ?
I think I've exhausted my options, hopefully somebody here has an idea.
From day 1, my TF300T has been unable to connect to a PC. At first I thought it was because one of my cats chewed on the USB cable before I could try (it still charged, just no PC connection) so I didn't do anything while it was still under warranty.
Since then, I've tried 3 different cables, multiple PCs and a Macbook, and I can't get anything out of it. It's not detected at all by the computer - no unknown device, no prompt for drivers, no device connected sound when I plug it in. No reaction on the tablet either, whether USB debugging is on or not. I also tried replacing the USB port on the tablet, but got the same thing. I doubt it's a driver issue since I'm not getting anything at all on either end of the connection.
It DOES connect to the dock ok, and all the dock functions seem to work. I've tried connecting the USB cable to both the tablet directly and the dock, and I get nothing from either port.
I'd really like to be able to flash custom ROMs on it, and I can't find a working way to root or flash it without a functioning USB connection. Could it be the third-party USB cables giving me problems, and if so, is there one that actually works? And if not, is this just a lost cause?
I've had my OPO for a little over 7 months now. My issue began when I had my desktop at a friend's house and plugged my phone into a USB 3.0 port to grab some videos off the phone when the phone suddenly shut off and would not turn back on. I thought it was bricked somehow but after leaving it plugged into a USB 2.0 port for some time, the charging screen came on and I was able to turn the phone on, but since then both OTG and MTP/PTP transfer doesn't work. If/when the phone is plugged into a computer, it gives an error and Device Manager shows
"Port_#0001.Hub_#0004 Unknown USB Device (Port Reset Failed)" and I'm not only able to charge the phone with one out the dozens of micro usb cables I have. I've tried several cables and a handful of different computers and OSs (Windows 7,8,8.1,10, Ubuntu 15.04, Kali Linux) all to the same result.
I'm running COS 12.1-YOG4PAS3JL, rooted, and have TWRP installed. The phone doesn't show up when in Fastboot mode or the bootloader either. Nothing changes when I disable or enable USB Debugging as well. With DriveDroid if I set the USB system to "Standard Android" the phone reboots and that seems like the closest I've been able to get to any kind of progress. I've gone through unbricking threads as well as Googled until my fingers bled but I'm yet to find anyone with a similar situation where the phone isn't bricked, the micro usb port isn't broken, I can't pick between MTP or PTP mode (USB Connection just says USB is now disconnected), and I'm not running a custom ROM. I tried replacing the micro usb on the phone so I now know that it wasn't that that's been messed up but I'm not sure where to go from here. Any suggestions or help is greatly appreciated.