USB Device Recognized by Mac, Not by Application

The general questions are why would the Mac recognize a USB device but the application software for the device "suddenly" (after a couple weeks of not using it) stop recognizing it and stop working, and what is the solution?
Specifically, I am running Leopard 10.5.5 on a MacBook Pro. Xrite’s Colormunki (monitor calibration and printer profiler device and software) worked twice, and now the device does not function with its software. The MacBook sends power to the Colormunki (its internal light flashes briefly as it is first connected to the Mac), the Mac recognizes the Colormunki (it shows up by name in the System Profiler), but the Colormunki software does not recognize that it is connected. A software alert message says it is not connected and asks that it be connected. Disconnecting and then reconnecting the device does not solve the problem.
At the suggestions of tech support at both Apple and Xrite (both have been very patient and persistent in trying to solve the problem), I have uninstalled the Colormunki software (using Xrite’s Colormunki Uninstall utility) and reinstalled it, reset the Pram, disconnected the Mac from AC and removed the battery, repaired permissions, and “repaired” the hard drive. I have set up a test user account on the Mac to try to determine if the problem is user-specific; it is not. I have tried a different Colormunki on the Mac with no other peripherals attached. It didn’t work either.
Both tech supports agree that this is an OS problem, not an application problem. Apple’s final suggestion was to do an archive and restore. This can be a bit of a hassle, the more so because I don’t really know if it will work. Is there a simpler solution or an explanation of what might have happened to cause the problem?

Using USB devices that take power from a computer is, in my opinion, a very iffy thing to do.
On my older MBP, I can use my Pinnacle HDTV stick only on the right-hand USB port. On the left, after a time, the USB port reverts to USB 1.1.
There is a very strict power limit for USB devices powered from the computer and exceeding this limit can damage the port or at least shut it down until a reboot.
It's best to use only USB devices that have their own power, or run them through a USB2 powered hub.
I am not sure this is the solution to your issue, but many have had similar experiences to mine using USB ports on MBPs.
if you go to the MBP forum and search for USB you will find a plethora of issues.
http://discussions.apple.com/category.jspa?categoryID=190

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Having issues with working USB devices, but only some...??? Very confused. Here it is:
- 20gig ipod, ipod mini all recognized by apple system profiler and working (shows up on desktop) Through USB and firewire
- Canon Rebel XT (USB 2.0), Macally mouse(USB 1.0), RECOGNIZED in apple system profiler...but not working!!! Iphoto doesn't recognize a camera is connected and mouse not responding
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If my logic board is cooked, then why would the ipods still work?? So, what is the problem???? PLEASE HELP
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Luke, many of the peripials such as cameras, printers, scanners, some will plug right in and work.
Others, need to plugged in and restart your computer,for them to work.
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Those that need drivers normally come with an insallation CD for this purpose... Cheers...Don

How To Share USB Devices Between Two Mac's?

I am musician and have several USB controllers that I would like to share between my Mac pro and my Macbook Pro. (drum pad, keyboard controller,USB midi interface etc.) I have seen several switches offered on the net, however they all seem to be for PC from what I have found really.
Belkin 7-Port Desktop USB Hub (F4U017) was recommended but the language in the the description does not mirror the same types of functions I am seeing mentioned in units made specifically for the PC. (ie "share USB devices between 2 computers.") Did I taint my mind by looking at the PC items first? Is it really as easy as to plug two Macs into the same USB hub and share their devices? Does anyone have a working solution they are using for this type of situation? How do you do it?
If I could share 7 USB devices between the two systems, I think I would be just this side close to Heaven in ease!
thank you!
Cheers,
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Thank you for the lead Direwolf, it felt like there might be a little more to it than just connecting to a hub. I just converted from PC about 8 months ago. Loving my macs!! A KVM switch I had not thought of that. I will look into. I read the wiki page and it seems like a kvm would replace the screen sharing feature the two machines can now use easy enough, only without using the cpu overhead to do it??? (i think is what I understood)
Does anyone have a model they are using and can recommend? (it's a jungle +out there+) I just did a quick search and found mostly kvm switches with 2-ports USB,. ... looking for seven, come on lucky seven! lol!
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USB MIDI controller no longer recognized by mac (not even in System Information).

Hello!
I have an M-Audio Keystation 49e that I have been using with my MBP (early 2008 model) for a few years with absolutely zero problems ever. I recently bought a very generic Chinese MIDI interface ("Sanoxy" brand) to go between my full-size Yamaha and mac so that performances of parts into logic would be on weighted keys and such.
For a while I used both the MIDI interface with the Yamaha and the little 49-key MIDI controller (via USB and also powered by the USB) with no problems. I believe this problem occurred when I tried to use both the MIDI interface and MIDI controller on one USB port using a Targus external number pad (unpowered) that has two USB ports on it (bad idea I'm sure). I did this because my MBP only has two USB ports on it and I was using the other for my audio interface.
I have reset PRAM more than a couple times, reset SMC, cleaned caches (even though this could be done more thouroughly maybe with a recommended program besides Cocktail - trial is expired), even replaced AppleMIDIUSBDriver.plugin from my parents iMac which the MIDI controller still works on. All this and nothing. The keyboard is not recognized as even being plugged into the USB port on System Information even though the lights are on, much less AMS.
Any other information you need I'd be happy to let you know.
Super thanks!
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Nano 5th Generation - Recognized on Mac, not on Mac iTunes

The 5th Generation iPod Nano that I have been using for a couple of years now is not being recognized by the iTunes on my new MacBook Pro. It IS recognized by the computer and it shows up in the Finder, but it never shows up as a device on iTunes.
However, I don't think it's a problem with the actual iPod because it still connects to the iTunes on my desktop PC that I used before getting my MacBook.
Any ideas why it would connect to the PC computer, the PC iTunes, the Mac computer, but NOT the Mac iTunes??? Both my Mac and my PC have the latest versions of iTunes, I believe.
Also, I'd like to try to fix this without having to restore the iPod and wipe it clean... unless someone knows a way I can somehow save all my music and all the playlists I have created?

Hello lgallagher,
I would be concerned too if my iPod nano was not recognized by iTunes on my MacBook Pro. I recommend reviewing this article for steps to take when your iPod is not recognized in iTunes:
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http://support.apple.com/kb/TS3716
Thank you for using Apple Support Communities.
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Sheila M

I have an ipad2 with wifi which I am planning taking abroad. Can I use one of those prepaid USB devices to acces Internet not having 3G? Is there a way around this

Other than using wifi I have been trying to see if I can use my iPad2 to access the Internet. I don't really want to upgrade to 3G now as ihave alredy purchased my ipad2 with wifi only.

Not if they could get a microSIM from a local carrier that supported tethering. Plus I believe that I have heard that various US carriers have a different roaming rate for data than for phone calls which is not as expensive, OCICBW.

1GB 1st Generation iPod Nano USB Device Not Recognized on any computer

I just recently received a free 1st generation 1GB iPod nano from a friend because they couldn't get it to work. I figured I'd take a crack at it and hopefully get a working, free iPod out of the deal...
It already had music loaded on it (mostly a bunch of garbage), so like anyone else in my position I proceeded to reformat the little sucker and wipe its slate clean.
Here is what happens when I try to connect the nano to ANY computer:
Here is how the nano shows up in device manager:
This was the original problem I was having with my desktop PC which is running Windows XP Home with SP2 and all the latest Windows updates. It is running iTunes 7.5.0.20, w/ latest iPod updater software version 1.2.3.
Prior to testing the 1st gen. 1GB iPod nano, I had been charging and syncing my 5th generation 60GB iPod classic on my desktop PC using the same exact cable. All of my USB ports are in working, functional condition and order. I even have “Allow the computer to turn off this device to save power” unchecked under USB Root Hub Properties.
I tried a couple different USB ports and I used another cable, no luck. So I moved on to my Fujitsu laptop running Windows Media Center Edition, all latest Windows updates, same version of iTunes and iPod software (the difference being that I DO NOT sync any iPods to it, nor do I have any music on it). SAME EXACT PROBLEM, same message bubble, same entry in device manager, and same lack of driver availability.
Thinking maybe it’s just a “PeeCee” thing I dug out my old PowerBook G4 running the ancient Mac OS 10.2. Keep in mind this thing only has a 400 MHz G4 processor, 512MB RAM, 30GB hardrive, and USB 1.1 ports. The iPod nano wouldn’t even give a hint that it existed when I plugged it in.
I have tried every single little Apple trick available. I’ve done the forced restart while connected and while not connected to the computer. I’ve done forced disk mode while connected and while not. I’ve run iTunes diagnostic tests on connected devices. I’ve messed with USB port settings. I’ve tried two different USB 2.0 iPod cables. I tested my dad’s 8GB 2nd generation iPod nano to see if it linked up with my desktop and my laptop IT DOES. I even tried my 60GB 5th gen iPod classic OVER AGAIN to see if it still worked, IT DOES.
Also, this 1st gen iPod nano will not charge when hooked to the computer through USB. When I plug it in, between the time it’s plugged in and when the “USB device recognized” bubble pops up the battery icon shows it is charging, but as soon as that bubble pops up it disappears and discontinues pretending to charge.
On my Fujitsu laptop, I uninstalled everything having to do with Apple. I uninstalled iTunes, Apple Software Update, everything. Restarting after it all of course. Then I installed the old iPod Software Updater from 6-28-2006. I was pretty sure this wouldn’t work because the iPod isn’t even recognized by the computer. In order for the iPod to work in the iPod Software Updater or iTunes it has to first be recognized at the basic Windows level. Which it isn’t…
I have done research all across the net and the only real answer I found was that the iPod Nano’s internal USB controller is dead. I’m 99% sure it has nothing to do with my laptop, desktop, USB cables, software, or drivers. What do you guys think?

Nope I have not figured anything out since I posted this. The closest answer I've found is that it's the internal USB controller which has gone bad. If that's the case than there is really nothing more I can do.
I did find one opening and that was the diagnostic screen. You get to it by holding down the Menu and Center buttons, as soon as the iPod resets hold down the Left and Center buttons, the iPod will beep and then it will go to a diagnostic screen. Maybe somewhere in there you can find the problem I don't know how to use it though.

Usb device not recognized malfunction windows 7

pls help me
Port_#0002.Hub_#0003

Hi,
Have you tried with other ports? Is this usb device recognized by other computers?
What's detailed information about your problem? Please locate to event viewer and find the related logs.
I suggest updating the BIOS from the manufacture's site first. Then reinstall or update USB controller to check the result.
http://blogs.technet.com/b/asiasupp/archive/2010/11/23/error-message-one-of-the-usb-device-attached-to-this-computer-has-malfunctioned-and-windows-does-not-recognise-it.aspx
Andy Altmann
TechNet Community Support

USB devices not "popping up" onto desktop

Help! When connecting USB devices to my Mac Book Pro they device does not "pop-up" onto the desktop. It is present in the System Profiler, but I am unable to use the devices - ie. I cannot use my external hard drive for Time Machine? Any suggestions. Thanks heaps.

Try this:
Close all active applications you've launched. When you see the word "Finder" at the left end of the menu bar next to the Apple icon. click it to get this:
Highlight "Preferences..." as shown. When Finder Preferences, open see if any of the check boxes in the upper part of the "General" tab are unchecked:
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Hello -
I'm new to this community message board.
I recently started having this problem about two months ago. Up til that time I didn't have this problem.
When I would connect my iPhone 4S to my windows 7 computer, the folder files would pop up and ask if I wanted to open the files from the iPhone connection through the USB port that I have always used.
It started two months ago, that when I connected my iPhone in the same way that I have always connected through the USB port, that instead Windows would recognize the connection but attempt to install the drivers. A message always comes up saying that Windows can not install the MTP USB Device because It can not load the drivers for this device and Code 31.
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I have used another USB Cable to connect the iPhone to the computer.
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UMDF\WpdMtpdDr.dll
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I had the same iss - it's a known issue whereby Windows attempts to use the wrong driver to access the phone.
BACK UP YOUR REGISTRY!!! Editing the registry can be (read: IS) dangerous and can cause no end of pain if done incorrectly.(But dont wort..i did it...)
- To Back Up your Registry: Click Start menu and click "Run". Type "regedit". Click File, then choose export and type "iphone driver fix registry backup".
- Click Export and let it export the the registry to a file.
- To fix the issue: Follow the folder tree on the left to: hkeylocalmachine > system > current control set > control > class
- Find “{EEC5AD98-8080-425F-922A-DABF3DE3F69A}” down the LEFT hand side and click on it.
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Hello there! Welcome to the forums @mrsddavis ,
I read your post about the troubles you're having with the printer telling you to "remove a USB device", when you do not have a USB device plugged into the unit. I have a couple suggestions that I hope will help you. You may have tried all of the steps to my first idea, if so move on to the second one. Also, the second step will be in a private message to you, as it cannot be posted publicly. In regards to the ADF not working, let me know what the problem is, for example, will it pull in paper and then jam, or will it not pull paper in at all? Let me know so I can research that problem for you.
If you are not sure how to check your forum messages this post, has instructions.
Power reset:
Press the Power button to turn on the product.
With the product turned on, disconnect the power cord from the rear of the product.
Unplug the power cord from the wall outlet.
Wait at least 30 seconds.
Plug the power cord back into the wall outlet.
Reconnect the power cord to the rear of the product.
If the product does not turn on by itself, press the Power button to turn it on.
Ensure the printer is plugged in directly to the wall outlet, avoiding power bars and surge protectors. This ensures the printer is receiving full power and may help greatly.
Good luck, I hope this helps
R a i n b o w 7000I work on behalf of HP
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“Thanks” for helping!
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USB Device Recognized by Mac, Not by Application

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