Error: unable to enumerate USB device on port 1

[jimboat]

I've been having the same problem with a WD My passport hard drive, which I have resolved if it's of any help.

It's been a long running problem, with a former WD drive failing. The new one failed to mount, So this time I re-formatted to ext 4, and it initially worked (I use as a back up drive.) Then failed to mount the second time.

Latest error from dmesg was:
48.050026] usb 6-1: new full speed USB device using uhci_hcd and address 6
[ 48.470072] usb 6-1: device not accepting address 6, error -71
[ 48.470081] hub 6-0:1.0: unable to enumerate USB device on port 1


I tried installing usbmount, and pmount, and then had permission problems with USB memory sticks with FAT32.

I finally removed usbmount and pmount which resolved the permission problems, but the wd would still not mount. Someone mentioned power earlier. I had a 2 into 1 usb lead left over from a vodem stick that works fine (on linux!) without it. Plug the two leads in first, then the drive into the end and bingo, drive appeared like magic on the desktop.

Thanks for the advice above, it helped to work through the problem!

[mogli2]

Hi all,

I was receiving the same error message when trying to connect my new phone to my machine (connecting under windows didn't work either). On a different machine it worked without a problem, so I imagined it was a problem with my USB controller.

Turns out: For me a BIOS upgrade solved the problem! (My previous BIOS was from mid 2009 and was the 1.0 version from the manufacturer.)

Hope this helps others, too.

[mgw2008]

OK Everyone!!!!!
I have somewhat of a cumbersome fix.
In desperation I discovered something that is so simple it blew my mind!!!!!
you might want to print these instructions or copy them or something just make them accessible apart from this web page.

1-reboot your computer
2-login normally
3-switch to terminal mode " CRTL ALT F1 "
4-login ( user name, Password )
5-plug in device that gets the error messages
6- type in the word " help "
(typing anything while the error messages are shooting up all over the place won't render the command invalid it just makes it hard for a human to read. the computer keeps track of all that is put in by the keyboard and will execute the broken command.It should then stop giving the errors and if it is a flash drive or usb hard drive then it should say something like "assuming drive cache write through" I've done this 3 times successfully. )
7-type in " sudo service gdm restart "
(this will log you out and perform a normal login)
Note:This cannot be done in a normal Terminal window. you must be in a terminal mode.

Anyway hope this helps others the way it helped me and/or show some blessed soul how to fix the darn thing for us. or teach us how to fix it for that matter... lol

John

Gee... I've been searching for weeks now to fix my Kubuntu systems after migrating from 10.04 (everything works) to 10.10 (can't connect to USB HD anymore). Just replace the "gdm" with "kdm" in the restart command line.

Add'l remark: USB doesn't reconnect after suspend (ACPI S3).

Txs a ton

[enid]

Hi,

After some searches and solutions that didn't work for me , I found this: http://www.absolutelytech.com/2010/04/18/solved-unable-to-enumerate-usb-device-disabling-ehci_hcd/
and it worked for me.
Didn't find why the load average kept staying over 1.5 but now it has decreased below .5 because of the warnings on syslog disappearing.

Regards

[daelomin]

It did not work for me at first in Ubuntu 10.10.

I found an esoteric solution : unplug the pc (in my case a laptop removed from the docking station), press & hold the power button for 20s (provoking a hard shutdown).

Restart it... plug it in... worked. Quite weird...

[Sonja]

enid's solution worked for me. Yay!

[demiurg]

enid's solution does not seem to work for me

[demiurg]

Well, looks like it did work for me eventually, but... what confused me is that I still got the "unable to enumerate" error message, but than it stopped and the disk started working.

However, I now get this error message from time to time which does not look good

kernel: [ 548.617143] sd 7:0:0:0: [sdc] Sense Key : Recovered Error [current] [descriptor]
kernel: [ 548.617159] Descriptor sense data with sense descriptors (in hex):
kernel: [ 548.617164] 72 01 04 1d 00 00 00 0a 09 0c 00 00 00 00 00 07
kernel: [ 548.617185] 00 00
kernel: [ 548.617193] sd 7:0:0:0: [sdc] ASC=0x4 ASCQ=0x1d
kernel: [ 579.036882] sd 7:0:0:0: [sdc] Sense Key : Recovered Error [current] [descriptor]
kernel: [ 579.036898] Descriptor sense data with sense descriptors (in hex):
kernel: [ 579.036903] 72 01 04 1d 00 00 00 0e 09 0c 00 00 00 00 00 07
kernel: [ 579.036924] 00 00 00 00 40 50
kernel: [ 579.036936] sd 7:0:0:0: [sdc] ASC=0x4 ASCQ=0x1d
kernel: [ 580.240915] sd 7:0:0:0: [sdc] Sense Key : Recovered Error [current] [descriptor]
kernel: [ 580.240930] Descriptor sense data with sense descriptors (in hex):
kernel: [ 580.240935] 72 01 04 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
kernel: [ 580.240956] 00 4f 00 c2 00 50
kernel: [ 580.240967] sd 7:0:0:0: [sdc] ASC=0x4 ASCQ=0x1d
kernel: [ 643.699566] sd 7:0:0:0: [sdc] Unhandled error code
kernel: [ 643.699576] sd 7:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
kernel: [ 643.699585] sd 7:0:0:0: [sdc] CDB: Read(10): 28 00 00 01 37 5f 00 00 80 00
kernel: [ 643.699605] end_request: I/O error, dev sdc, sector 79711


Something's seriously ****** up with USB 3.0 in the recent kernel

[rsbrux]

I am having a similar problem with various linux distros,including various versions of clonezilla, RescueDisk, Fedora and in this case, Mythbuntu 11.04. The problem is repeated, almost continuous, appearance of the error message "unable to enumerate USB device on port 7", even after unplugging all external USB devices. This prevents GUI display even in recovery mode. Oddly enough, I was able to use the system normally until I had finished configuring the myth backend, at which time these symptoms. My system supports only USB 2.0, and there is no BIOS update available for it. The problem appears to have been introduced (into the kernel?) some time ago, as some users report that the error messages only appeared after an update. See https://bugzilla.redhat.com/show_bug.cgi?id=511391 for some historical background. The problem appears to be no longer present in Clonezilla live 1.2.8.46. However, it is hard to be sure, because I only ever use Clonezilla briefly, and the problem only showed up in Mythbuntu after a couple of days. I had high hopes of migrating my HTPC from ******* to Linux, but these hopes are dashed, at least until this problem can be solved.

P.S. Further research turns up many reports of this error coming and going, going back to 2006. Active bug reports are, for example, 666563 and 725108 in the Red Hat list (mentioned previously above) and https://bugs.launchpad.net/ubuntu/+s...ux/+bug/836816. This last is marked "new" and as affecting "1 person", both of which indications are seriously misleading. I am still waiting for my edit/post/write authorization for launchpad. Meanwhile, I beg all others affected by this bug to add yourselves to it and to add appropriate links to other instances, so that it gets the appropriate level of attention.