unable to enumerate usb devices

[shallpion]

Hi, I just found that my portable hard-disk is not able to be mounted during the system booting.

[ 4263.491099] usb 8-3: new high speed USB device using ehci_hcd and address 41
[ 4263.547402] hub 8-0:1.0: unable to enumerate USB device on port 3

The above message is in the dmesg constantly. I tried lsusb -v and cannot find my hard-disk. I also tried another kernel, but failed:(
This portable hard-disk is working fine now under windows XP so no hardware damage exists. I am on

Linux debian 2.6.26-1-amd64

So, what am I supposed to do, please? thank you.

[hkoster1]

Hi, I just found that my portable hard-disk is not able to be mounted during the system booting.

It seems to be a timing problem during the boot process, you'll probably find that the HD works fine after booting has completed. It is a known problem, for example I have a similar problem with a newer USB mouse for which the manufacturer/product code is not yet known to the USB kernel drivers. If you don't like the error messages (or warning messages, really), then you could add the "nousb" kernel boot option: open /boot/grub/menu.lst in an editor (as root), scroll down to the line

Code: Select all

# defoptions=quiet

and change it to

Code: Select all

# defoptions=quiet nousb

Next, still as root, run the command

Code: Select all

# update-grub

but even that will not necessarily suppress those warning messages at the very start of the boot process. Grin and bear it, my advice.

[robinedgar]

I found that running

update-usbids

stopped the warnings from going nuts

[enid]

Hello,
I tried your solution but it didn't work for me.
Then I found this http://www.absolutelytech.com/2010/04/18/solved-unable-to-enumerate-usb-device-disabling-ehci_hcd/ and it did solve this problem for me.

Regards

[spsalsm]

I found that running

update-usbids

stopped the warnings from going nuts

YES! Running Ubuntu 11.04, so far this exact command has worked for me. Whew, thanks so much. I don't even have any USB devices plugged in, and this message is spamming my kernel log! It's been a pain for a long time, and has interfered with so many distro installations. Finally, after running the "update-usbids" command, I don't see the message anymore. I wonder what it would take to just disable the specific port that it's griping about? I also wonder if I need to run this command every time I log on....

Thanks again.