unable to enumerate USB device on port 2

Asked by Nguyen Duy Tam on 2013-05-04

pls help me
I always to see on syslog the following error:

May 4 15:58:27 ndtam-VPCEB25FW kernel: [ 321.547832] hub 1-1:1.0: unable to enumerate USB device on port 2
May 4 15:58:27 ndtam-VPCEB25FW kernel: [ 321.786896] usb 1-1.2: new high-speed USB device number 117 using ehci_hcd

I don't know to fix it

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Ubuntu linux Edit question
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Do you get the same messages for all USB devices?
Does the system have a make and model?
Is Ubuntu fully updated?
Do you have the latest BIOS?

Details please, you have given nearly zero context, making it impossible to answer

Nguyen Duy Tam (ndtam1980) said : #2

Hi Andrew
Thanks for support

I always to see this message, only port 2
My laptop is Sony Vaio VPCEB25FW and Ubuntu 12.04 LTS
I've just update Ubutu
I have not update BIOS

Simon Thomson (simon-thomson) said : #3

I have the same problem, the hardware it effects is the WebCam. I have a Sony Vaio VGN-AR71E. I am searching the internet for a fix.

Simon Thomson (simon-thomson) said : #4

Run the following code in your terminal window

        $ sudo apt-get install libglib2.0-dev libusb-dev build-essential gcc automake mercurial
 $ hg clone http://bitbucket.org/ahixon/r5u87x/
 $ cd r5u87x
 $ make
 $ sudo make install
 $ sudo r5u87x-loader --reload

The loader will automatically be run on boot when it detects your webcam.
I found the answer here: https://bitbucket.org/ahixon/r5u87x

Nguyen Duy Tam (ndtam1980) said : #5

Hello Simon Thomson, thanks for your help
After I run
 $ sudo r5u87x-loader --reload
I see this Error: Failed to find any supported webcams

Can you help with this problem?

Provide an answer of your own, or ask Nguyen Duy Tam for more information if necessary.

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