Trying to use active USB 2.0 extension cable.

[jim]

On Fri, 2009-12-04 at 11:38 -0500, Lennart Sorensen wrote:
> 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.
> 
Thanks Lennart . I wasn't sure if that was the same thing ie cable
powered hub cable powered hub etc. Good idea. Maybe I'll try that next.
I only looked at the product reviews after I bought them. Ya looks like
it is a real dud from the reviews.
jim

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