Trying to use active USB 2.0 extension cable.

[Lennart Sorensen]

On Fri, Dec 04, 2009 at 03:04:07AM -0500, jim wrote:
> I'm trying to use an active USB 2.0 extension cable and it doesn't seem
> to be recognized properly. I'm using Ubuntu Jaunty ( unfotunately the
> modules are compiled into kernel or I'd try removing uhci_hcd) Below is
> dmesg output:
> 
> usb 2-2: new high speed USB device using ehci_hcd and address 9
> hub 2-0:1.0: unable to enumerate USB device on port 2
> usb 6-2: new full speed USB device using uhci_hcd and address 3
> usb 6-2: not running at top speed; connect to a high speed hub
> usb 6-2: configuration #1 chosen from 1 choice
> hub 6-2:1.0: USB hub found
> hub 6-2:1.0: 4 ports detected
> 
> At first it is recognized as USB 2.0 device ie ehci_hcd driver but
> ultimately becomes uhci_hcd device. It is this device
> http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2329301&CatId=444
> 
> Maybe it is just a lousy device. Problem is I can't get a USB 2.0 web
> camera to work properly with it. Can anyone recommend an an active USB
> 2.0 extension that works with Linux . Eventually I need about 30 feet so
> was hoping to use two of these. The literature says you can string up to
> 5 together. I know my USB bus is ok since USB 2.0 hubs work ok and the
> camera works ok when directly plugged into my computer. Any suggestions?
> Eventually I will be hooking up 4 cameras.

Have you considered doing:

15' USB cable connected to a powered USB2 hub, then another 15' cable
and another powered hub?

Looking at the reviews this product sounds rather flacky.

-- 
Len Sorensen
--
The Toronto Linux Users Group.      Meetings: http://gtalug.org/
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://gtalug.org/wiki/Mailing_lists