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[Q] Help! Can't use any USB devices...

I've looked at all relevant threads in the Xoom forums and on the web but still can't find the solution to my problem so I'm hoping one of you guys can help me.
I have:
1.Motorola Xoom US WiFi(But bought in Singapore, MZ604)
2.Working DIYed USB Host Cable(I plugged my DHD into the microUSB end and a normal USB-USB cable at the other then plugged into my computer
3.Sandisk ThumbDrive, Kingston ThumbDrive, FAT32
4.Microsoft USB Mouse
I'm running the awesomely win Tiamat ROM(thanks) as well as the kernel which I was told worked from the this thread(Tiamat 1.4.2), I have the USB Watcher OTG app too. But not only can I not mount or use any USB device, the devices do not light up. there appears to be no power flowing to the devices.
A little help please
Thanks for reading this post
BTW After flashing the 1.4.4 Kernel my WiFi refused to work so I downgraded.

When you searched other threads, you missed a very relevant one. In this section, exactly 12 posts below yours, is a similar thread with this post:
"I'm not sure if its a power problem or the unusual way the built-in Sandisk software mounts the drive (it mounts as a "cd drive" in Windows); but Sandisks are problematic.
If you can, please try another thumb drive just to be sure. Preferably, one with no lights (to minimize power requirements) and not a Sandisk or Kingston, which both use proprietary built-in software upon insertion into PC usb ports."
Secondly, you should not have flashed another Tiamat kernel. 1.4.4 is included in the Tiamat 1.0 ROM. BRD stated that in the OP of that thread. You may want to reflash the Tiamat 1.0 ROM again. Then you will not need to flash any other kernel.

I'm sorry if I was not clear, but my sandisk or Kingston appears to be of the type which does not have the annoying U3 thing(the thing mentioned that causes the thumbdrive to mount as a cd drive.) I reflashed the 1.4.4 kernel just to be sure it's there(oh and I did reflash the ROM), and got a error what prevented WiFi from working. And none of the USB devices I tried(including the kingston with no lights) worked. I think there's no power, so I'm looking for help here. Anyway thanks for reading my long post, sorry if I'm annoying.

tlkh said:
I'm sorry if I was not clear, but my sandisk or Kingston appears to be of the type which does not have the annoying U3 thing(the thing mentioned that causes the thumbdrive to mount as a cd drive.) I reflashed the 1.4.4 kernel just to be sure it's there(oh and I did reflash the ROM), and got a error what prevented WiFi from working. And none of the USB devices I tried(including the kingston with no lights) worked. I think there's no power, so I'm looking for help here. Anyway thanks for reading my long post, sorry if I'm annoying.
Click to expand...
Click to collapse
If your wifi is not working, I would recommend reflashing the ROM. USB drive connection has been problematic. See this thread > http://forum.xda-developers.com/showthread.php?t=1068999

I usually connect devices through a hub on a stock unrooted xoom wifi running 3.1. Without the hub I've found usb mice work without external power (provided by the hub) but flash drives do not. For troubleshooting maybe try connecting through an externally powered hub to see if you don't meet the power requirements.
Honestly though, since the flash drive's light doesn't even come on it sounds like the xoom is not recognizing that it should be a host which hints to me that there's something wrong with the cable. The way you tested it doesn't sound like it tests the OTG part of the cable (the 5th pin) because the PC will be the host either way. I just bought Motorola's Camera Connection Kit off of amazon. I figured for long term use it's better than a home made one anyway. I'd post the link but I don't have enough posts yet...just search Motorola Camera Connection Kit on amazon if you're interested.

Media transfer protocol, otg cable, tiamat 1.4.4 and honeycomb

Hi all
I would like to connect my canon a470 powershot to my
Wifi only xoom, running tiamat 1.4.4 and honeycomb,
through an otg cable.the cable works and I can access USB
pens reading the content.Now as my camera does not
provide usb mass storage access but only mtp/ptp I cannot
manage to access photos directly plugging the USB cable.
I read that Verizon camera kit cable supports ptp on
Honeycomb systems but how? Is there any app or .ko
needed or is a compatibility issue related to my camera?
Thanks
Sent from my Xoom using Tapatalk

I have the Motorola Xoom "camera " otg host cable. That's all the "kit " contains. I'm running the Tiamat ROM and I can not access my Canon Powershot either. So, if you have a working otg host cable, don't waste your money....

really ? nothing more than a simple OTG cable ? Thanks for the advice ! How is it supposed to work on stock ROM's if UMS is disabled ?
I 'm sure that there must a library for ptp/mtp on android: I read that some people had this feature working, being able to access photos (stored on the camera) through the stock gallery app.
Maybe the OTG cable is not enough...

Could be the camera brand. I have no idea though. I don't need to connect any of my cameras to my xoom.

Bumpity bump
Any resolution to this?
I have USB sticks working too but not ptp supported devices...

I'm having the same problem with my Canon 5D. Also tried Canon Ixus 130 and that didn't work either. I just tried installing the stock Australian image and then installing the 3.1 update and that does not work either... I asked around and found people that also had a canon 5D and Xoom and the combo worked for them.

that is so weird
I wish someone can shed some light on this...is this inherent with 3.1?

Do not know will this help in any meaningful way but did anyone tried connecting A470 running chdk? I do not have Xoom but there exist plethora of scripts for canon low end cameras making them just a little bit more useful. Higher end cameras have another way of enhancement with different program setting. Just my to cents...

[Q] XOOM external USB Wifi adapter.

I've looked and saw something similar but don't remember the search criteria. History: I once had a Chinese tablet that worked as desired. I used a USB WLAN adapter that overrode the internal wifi and worked. Is there something I can do to have my XOOM recognized my external usb wifi adapter. (I am rooted with ICS 4.03 with a OTG adapter)

Democreature said:
I've looked and saw something similar but don't remember the search criteria. History: I once had a Chinese tablet that worked as desired. I used a USB WLAN adapter that overrode the internal wifi and worked. Is there something I can do to have my XOOM recognized my external usb wifi adapter. (I am rooted with ICS 4.03 with a OTG adapter)
Click to expand...
Click to collapse
I believe the information you are looking for in in the Xoom Android Development section. The tread is called "Tegra Hardware and Feature Implementation ". Drivers and further enhancements to the kernel can be found on the first post.

That was informative, now to figure out how to install it. I am just getting started doing this stuff.

External USB Wifi
First I don't want to do any testing on network security, I barely know how to turn on my XOOM.
What I looking for is a way to use my external USB Wifi adapter with my XOOM to increase the range of reception when I'm on the lake too far from my home wifi.
I want to be able to disable the internal wifi and then attach the external USB Antenna.
Developers, I know where the donate button is. Just need some help with this issue.
I don't want to install BT5.
Or if this has all ready been done please give me the link because after hours of searching, I can't seem to find the solution.

Democreature said:
First I don't want to do any testing on network security, I barely know how to turn on my XOOM.
What I looking for is a way to use my external USB Wifi adapter with my XOOM to increase the range of reception when I'm on the lake too far from my home wifi.
I want to be able to disable the internal wifi and then attach the external USB Antenna.
Developers, I know where the donate button is. Just need some help with this issue.
I don't want to install BT5.
Or if this has all ready been done please give me the link because after hours of searching, I can't seem to find the solution.
Click to expand...
Click to collapse
I am interested in your results....did you get it to work?

No Joy

[Q] inquiry on usb port of alcatel tab t10

good day to everyone. firstly, i would like to thank you for having the time to read my post.
well basically heres my inquiry, my unit is the alcatel tab t10. i never had any problems with it until recently, my device's usb port suddenly stops working.
tried unchecking the usb debug mode, tried checking it but to no avail, the usb still does not work. it doesnt seem to connect to my laptop. tried changing the cable.
i also tried connecting my device to my brothers laptop.
correct me if im wrong, but when the usb fails to connect to any laptop, their should be a notification in the laptop that the device is not recognized. but in my condition, no notification shows up. its like my device does not really connect at all.
oh and if it helps, i bought an otg cable before it started malfunctioning. but the only thing i had conneceted to my device is a wired mouse and a wired generic gamepad, which both seems to be working perfectly fine.
also, if i connect my device to a wired mouse, it would work perfecly fine. i could also connect to a usb flash drive, that is via the otg cable.
so whats weird is that the usb cable does not work, but the otg cable works fine.
if you have any question or any suggestion , i would truly appreciate it.

Hmm.....well the good thing is the port itself isn't "dead" as you can still utilize it for OTG. My only suggestion is make a backup of all your apps and data and try a factory reset.
Sent from my SCH-R880 using xda app-developers app

thank you for the suggestion guitarman2010. unfortunately my usb port isnt still working. i also reflashed my device's current firware. but still wasnt the solution i was looking for. i was just wondering if there is a directory under the root folder that holds the devices usb driver? would it be possible that the device's driver itself got deleted? i wam still at awe that the otg cable still works like a charm.
and another thing, is the male usb pin the same with the flash drive's pin? cause if i connect the usb cable to the otg cable it wont work, but the flash drive works normally.
sorry for the amount of question im posting
thank you very much for the suggestion. especially when u told me that the port itself wsnt dead. i can now breathe easier..
and future suggestion and advice would be appreciated.

do you guys know how to access the phoneutil in tablet? maybe i should change the usb option to pda? but i heard that its only applicable to samsung 4.0.3 devices? suggestions are appreciated.

USB host mode - wrapping up

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?