RE: iPod not recognized when USB 2.0 enabled

wayfinder650,

Could you please tell me how you disconnected your SIIG USB 2.0 hub switch?
I can't figure it out. I'm experiencing the same problem with a Treo 755p.

Thanks

"wayfinder650" wrote:

I had a similar problem with my Dell Dimension 2400 PC (running Windows XP
Home Edition SP2) and USB 2.0 devices. Last week, all my USB 2.0 devices
(Memorex 512 mb memory stick, Seagate external hard drive Canon PIXMA MP470
printer) stopped getting recognized.

After trying many things, I discovered that when I disconnected a SIIG USB
2.0 switch I had been using to share the Canon PIXMA MP470 printer with
another computer, I could use my USB 2.0 devices again.

I'm not sure if the SIIG USB 2.0 switch, the printer or the combination of
the two was the problem, but getting rid of the SIIG USB 2.0 switch fixed the
problem.

I wonder what would happen if you disconnected all your USB devices and
plugged them back in one at a time to see if one of your devices is causing
all the trouble.

"Paradiddle" wrote:

First off, my PC is a Dell Dimension 2400 (purchased in 2004) running Windows
XP Home Edition, Version 2002, SP2. I've had a recurring problem with Windows
not recognizing my iPod mini when I plug it in (i.e., standard "USB device
not recognized" pop-up balloon) over the past year or so. Thinking it was a
problem with the iPod, I bought myself a Creative ZEN mp3 player for
Christmas, only to have the same problem after the first few times plugging
it in. (I returned the ZEN b/c I couldn't stand the interface and software
compared to iPod/iTunes, but that's neither here nor there). What's weird is
that it's worked fine before, and occasionally still does, but most of the
time I just get the above-mentioned "USB device not recognized" message.

I've been researching this online for the past few days and came across an
old 2004 post from a forum I can't recall the name of, but it describes my
current situation perfectly so I'm just going to quote it directly:

"Every time I plug [my iPod] in, Windows' new hardware found device just
pops up a balloon saying that the USB device is not recognized. iTunes
doesn't recognize that iPod has been connected to the computer, and I don't
see it as a hard drive under My Computer....Under Device Manager/Universal
Serial Bus controllers, I have nine entries: "Intel(R) 82801DB/DBM USB 2.0
Enhanced Host Controller - 24CD," three "Intel(r) 82801DB/DBM USB Universal
Host Controller" suffixed 24C2, 24C4, and 24C7, respectively, and four "USB
Root Hub" devices. I tried uninstalling them and rebooting on the hopes that
when Windows reinstalled them after I rebooted, the problem would go away,
but no such luck.

I did find, however, when I disabled the first entry, the USB 2.0 Enhanced
Host Controller device, my computer was suddenly able to detect the iPod for
what it was. But without that 2.0 controller, it could only connect at 1.1
speeds (and the little popup balloon showed up again to tell me that I was
just connecting at 1.1). And then, after renabling the USB 2.0 Enhanced Host
Controller, all the devices got reinstalled and the iPod again could not
connect. Something seems to be wrong with that USB 2.0 Enhanced Host
Controller, but I tried to update the driver and Windows said it couldn't
find anything new or better. Does anyone know what I can do to fix this
problem?"

So that's the gist...I currently am able to connect my iPod, but only by
disabling the USB 2.0 Enhanced Host Controller. It doesn't bother me that
much to have to do so, but what is bothersome/annoying is that this appears
to be a common problem and there must be some kind of fix out there that
Microsoft or other folks have used. I tried installing a hotfix referenced in
Microsoft Article 892050 (http://support.microsoft.com/kb/892050/) ("A USB
device that is connected to a USB 2.0 hub is not detected in Windows XP
Service Pack 2, Windows Server 2003 Service Pack 1, or Windows Server 2003
x64 versions"), but it didn't solve the problem. I also went to the Intel
website, found available updates/drivers for my chipset (Intel[R] 845G
family), and installed Chipset Installation Utility 6.3.0.1007 (dated
12/16/04). Again, this installation did nothing to fix my problem.

I'm completely at a loss and am tired of spending my holiday weekend working
on this. Right now I'm resigned to simply working with the USB 2.0 Enhanced
Host Controller disabled, but thought I would check here as a last resort.
Thanks in advance for any advice!

Matt
.

Relevant Pages

  • RE: iPod not recognized when USB 2.0 enabled
    ... I did the same thing and figured out that when my printer's power is ... on, the iPod isn't recognized, when it's off, it is. ... network adapter plugged into my USB hub). ... not recognizing my iPod mini when I plug it in (i.e., ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: I cant mount my USB thumb drive or ipod -- no /dev/da*
    ... I'm using FreeBSD 6.0 RELEASE with the GENERIC kernel. ... it has all of the necessary pieces to allow usb drives). ... When I plug my ipod into my computer, ... Apple iPod mini, rev 2.00/0.01, addr 2 ...
    (freebsd-questions)
  • I cant mount my USB thumb drive or ipod -- no /dev/da*
    ... it has all of the necessary pieces to allow usb drives). ... When I plug my ipod into my computer, ... Apple iPod mini, rev 2.00/0.01, addr 2 ... line explaining that umass0 sees the item. ...
    (freebsd-questions)
  • Re: Hard-drive based "cd multichanger"
    ... I have a box of tricks that makes my Mazda's factory stereo think my iPod ... some the Headunits that take USB Pen drives ... I have a set top box that plays divx and MP3 off a USB slot. ...
    (uk.rec.cars.maintenance)
  • Re: Brand new Ipod Nano is malfunctioning right out of the box
    ... it didn't, and after restarting the computer, Itunes won't open. ... At home, the Ipod hadn't shown up under "Devices" in Itunes, as it did when the salesman at the Apple store demonstrated, but at home I was able to scroll to "Eject" in Itunes. ... Unfortunately the Ipod manual only says on the last page to look at the Apple Web site for more complete help, and it's only on the Web site that the instructions say to plug the Ipod into the hub first and then into the Ipod. ... Because I was only reading the skimpy little Ipod manual that came with the manual, I plugged the USB cord into the Ipod first and then the other end of the USB cable into my USB hub, so I think that probably caused the glitch, or maybe it's because I plugged the cable into my hub and not into my Imac. ...
    (comp.sys.mac.apps)