Re: Chronic USB disconnect events for Pinnacle Dazzle DVC 100 video capture device

Devin Heitmueller wrote:
> On Thu, Feb 25, 2010 at 1:52 PM, Ben Swartzlander <[email protected]> wrote:
>   
>> I have a Pinnacle Dazzle DVC 100 USB video capture device hooked up to a
>> security camera capturing video 24/7. A few times a month, my kernel
>> suddenly decides that the USB device was disconnected and reconnected,
>> resulting in the device getting a new number and causing my recording
>> software to stop recording until I restart it with the new device number.
>> Here is an example of the dmesg output when it happens:
>>     
>
> The USB host controller might be going to sleep if the PC's
> suspend/resume kicked in.  Or, is there a USB hub involved which might
> have been power cycled?  It's pretty hard to figure out *why* the
> hardware decided to disconnect the USB device.
>
> The reason the device gets a new device number is because it is still
> in use when the disconnect occurs.  If the application were not
> running at the time of the disconnect event, you would get the same
> device number.
>
> Also, it's probably worth mentioning that these sorts of devices are
> not really designed for capture 24/7, so it might be overheating or
> some bug in the hardware.
>
> Devin
>
>   
try to update to ubuntu 9.04 from 8.10 this solve my problem

but I think I need to modprobe blacklist any usb keu that need the ehci 
(usb2)

or it kicks my em2860 vstream to usb1 hub

8.10 = my ehci was loaded after ohci

9.04 = ehci loaded before all the time

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