linux-kernel - Re: 2.6.33.2: USB Quickcam Pro 9000 (usb resets)?

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Date:	Tue, 6 Apr 2010 05:35:20 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Alan Stern <stern@...land.harvard.edu>
cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: 2.6.33.2: USB Quickcam Pro 9000 (usb resets)?



On Mon, 5 Apr 2010, Alan Stern wrote:

> On Mon, 5 Apr 2010, Justin Piszcz wrote:
>
>> Hi,
>>
>> When no webcam is used, I do not see disconnect/reconnects.
>> When I use a webcam, I see the following, is this normal?
>> Note: I run motion on this host.
>
> No, it is not normal.  It indicates that the webcam is somehow
> interfering with the signals from the keyboard hub.

So the USB hub is shared amongst the ports in the back of the board that
I am using:

Port 1-> keyboard/mouse
Port 2-> USB hub -> webcam
Port 3-> UPS (but not using nut at the moment, just hooked up)

$ lsusb
Bus 001 Device 023: ID 0461:4d15 Primax Electronics, Ltd Dell Optical Mouse
Bus 001 Device 022: ID 413c:2002 Dell Computer Corp. SK-8125 Keyboard
Bus 001 Device 005: ID 046d:0990 Logitech, Inc. QuickCam Pro 9000
Bus 001 Device 004: ID 413c:1002 Dell Computer Corp. Keyboard Hub
Bus 001 Device 003: ID 2001:f103 D-Link Corp. [hex] DUB-H7 7-port USB 2.0 hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Any recommendations/workarounds how to fix or just ignore it?

Justin.

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