Subject: Re: USB devices spontaneously powering off?
To: Peter Seebach <>
From: Steven M. Bellovin <>
List: current-users
Date: 02/23/2003 03:16:16
In message <>, Peter Seebach writes
>In message <>, Brad Spencer writes:
>>I also get "dead" mouse behavior with my USB mouse.  I have noticed that
>>it is much worse when the Wavelan card is receiving and sending packets.
>Interesting!  I was thinking about that, and I've done some experiments.  The
>reason I notice this so much is that the USB widget I'm using as a remote for
>ogle is much more likely to get "turned off" while ogle is playing than when
>the system is under light load.
>Is there a good way to "ping" USB devices or anything like that?  I'd like to
>start doing more work to check on whether devices are still alive or not.

The usbdevs command, perhaps?

		--Steve Bellovin, (me) (2nd edition of "Firewalls" book)