From owner-freebsd-usb@FreeBSD.ORG  Thu Apr 16 10:55:31 2009
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From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-usb@freebsd.org
Date: Thu, 16 Apr 2009 12:58:00 +0200
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Cc: Alexander Best <alexbestms@math.uni-muenster.de>
Subject: Re: Suspend failed
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On Thursday 16 April 2009, Alexander Best wrote:
> hi there,
>
> i'm using the following commands to deactivate and activate my mouse:
>
> usbconfig -u 1 -a 3 power_off
> usbconfig -u 1 -a 3 power_on
>
> which works great. if i issue the commands shortly after another this is
> what happens:
>
> ums0: at uhub1, port 2, addr 3 (disconnected)
> ums0: <Razer Razer 1600dpi Mouse, class 0/0, rev 2.00/21.00, addr 3> on
> usbus1 ums0: 7 buttons and [XYZ] coordinates ID=0
>
> however. if i wait for some time before re-activating the mouse it flashes
> twice and this is what dmesg says:
>
> ums0: at uhub1, port 2, addr 3 (disconnected)
> ums0: <Razer Razer 1600dpi Mouse, class 0/0, rev 2.00/21.00, addr 3> on
> usbus1 ums0: 7 buttons and [XYZ] coordinates ID=0
> ums0: Suspend failed
>
> the "Suspend failed" warning however isn't causing any problems. the mouse
> attaches just fine.
>
> i'm running r191076 (-CURRENT/usb2).

Try these patches:

http://perforce.freebsd.org/chv.cgi?CH=160485
http://perforce.freebsd.org/chv.cgi?CH=160413

--HPS