Ubuntu
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unable to enumerate USB device on port 2

Asked by Nguyen Duy Tam

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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actionparsnip (andrew-woodhead666) said : 		#1

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

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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

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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.

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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

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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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