openSuse 11.4 Getting "hub 2-0:1.0: unable to enumerate USB device on port 5" constantly

English Hardware
#1

Getting this constantly in messages:

Mar 13 18:33:26 cjbLT2 kernel: 7523.361079] hub 4-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:26 cjbLT2 kernel: 7523.567075] hub 2-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:26 cjbLT2 kernel: 7523.739110] hub 4-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:26 cjbLT2 kernel: 7523.945101] hub 2-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:26 cjbLT2 kernel: 7524.117099] hub 4-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:27 cjbLT2 kernel: 7524.324108] hub 2-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:27 cjbLT2 kernel: 7524.496137] hub 4-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:27 cjbLT2 kernel: 7524.702113] hub 2-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:27 cjbLT2 kernel: 7524.874124] hub 4-0:1.0: unable to enumerate USB device on port 5
Mar 13 18:33:27 cjbLT2 kernel: 7525.080110] hub 2-0:1.0: unable to enumerate USB device on port 5

If I do this:

echo 2-0:1.0 > /sys/bus/usb/drivers/hub/unbind

Or this:

echo 4-0:1.0 > /sys/bus/usb/drivers/hub/unbind

The messages stop, doing either one will stop the messages, don’t have to do both.

I don’t have a USB device on port 5 that I know of:

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 0b05:1786 ASUSTek Computer, Inc.
Bus 001 Device 004: ID 04f2:b016 Chicony Electronics Co., Ltd VGA 30fps UVC Webcam
Bus 003 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 003 Device 003: ID 046d:c521 Logitech, Inc. Cordless Mouse Receiver

This is on my laptop. I have 3 external USB devices plugged in but this will happen when I boot without them plugged in too. Don’t seem to be missing any device either.

This wasn’t happening on openSuSE 11.2 and just started when I upgraded it to 11.4.

Anyone know what’s causing this and/or how to fix this short of what I did?

#2

This may due to a quirk of your usb hardware and the kernel driver concerned. It might be worth checking/posting a bug report on this. (A quick search online shows several similar in existance).

For now, why don’t you simply add your command to a script executed at boot?

Similar problem/solution here:

[Solved] Unable to enumerate USB device (Disabling ehci_hcd) | Absolutely Tech](http://www.absolutelytech.com/2010/04/18/solved-unable-to-enumerate-usb-device-disabling-ehci_hcd/)

#3

Yeah searched around and saw that.

Just thought I’d check here before filing a bug report. Thing is my hardware hasn’t changed and it wasn’t happening in 11.2 but is now in 11.4. So that says to me something changed in the kernel.

#4

Also having this problem since updating to 11.4

#5

Tried the command given above - “echo 2-0:1.0 > /sys/bus/usb/drivers/hub/unbind” Lost my mouse, so that appears to be the problem.

#6

Still getting spammed with this message. Unbinding may work but means I lose either the mouse or wlan stick.

Looking around the net, it seems to be a problem on a number of distros, so is it a kernel bug? Any guru any ideas?

John F.

#7

This issue is above my knowledge, but if you’re really serious about getting help, I strongly suggest filing a bug report

and/or using IRC:

openSUSE:IRC for newbies - openSUSE

There may be developers available who can provide the help you require.

#8

Bug was already there in Bugzilla, so I have added by halfpennyworth.

Thanks for your reply

John F.

#9

I worked very closely with the USB hub driver maintainer on this problem. I
don’t know about your specific machine, but my “unable to enumerate” messages
came from a hub that exists on the motherboard of my HP dv2815 notebook, but is
not connected to anything. The “final” conclusion is that it is a hardware bug,
and the driver cannot be fixed to eliminate the problem.

You do not, however, have to live with the messages. Just add the following to
/etc/init.d/boot.local:


echo "0000:00:04.1" > /sys/bus/pci/drivers/ehci_hcd/unbind
echo "0000:00:04.0" > /sys/bus/pci/drivers/ohci_hcd/unbind

You will have to adjust the bus numbers to fit your system. What those commands
do is remove the binding between the device and the driver.

I also modify my kernel to limit the number of messages to 5, but that is not
necessary.

#10

I have “resolved” the problem by removing my Genesys Logic, Inc. USB 2.0 Hub / D-Link DUB-H4 USB 2.0 Hub. This has stopped the messages.

It is annoying as the device is useful…

#11

I thought this bug had been squashed recently, but it is still “bugging” me.

Using kernel 3.04