From owner-freebsd-current@FreeBSD.ORG  Tue Jun 26 14:32:13 2007
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Date: Tue, 26 Jun 2007 08:31:57 -0600 (MDT)
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To: ianf@clue.co.za
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: current@freebsd.org
Subject: Re: USB mouse works again in current!!! 
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In message: <E1I37RI-0000Z5-6B@clue.co.za>
            Ian FREISLICH <ianf@clue.co.za> writes:
: "M. Warner Losh" wrote:
: > In message: <E1I2ic4-0000bu-Fo@clue.co.za>
: >             Ian FREISLICH <ianf@clue.co.za> writes:
: > : Ian FREISLICH wrote:
: > : > I also fixed the onboard wireless mouse controller which previously
: > : 
: > : s/I/It/
: > : 
: > : > worked for about 10 minutes before a usb bus error broke the
: > : > connection.
: > : 
: > : Seems I spoke too soon.  After running fine for about an hour the
: > : wireless mouse died with the following error:
: > : 
: > : Jun 25 09:00:53 apple kernel: usb3: host controller process error
: > : Jun 25 09:00:53 apple kernel: usb3: host controller halted
: > : 
: > : Is there any debugging knob I can turn to get more data about what
: > : went wrong?
: > 
: > I don't know.  You can try configuring USBDEBUG in your kernel, then
: > setting hw.ums.debug=1, but that tends to generate a lot of traffic in
: > an hour.
: 
: Hmm.  Not much more to go on:
: 
: usb3: host controller process error
: usb3: host controller halted
: usb3 regs: cmd=0080, sts=0030, intr=000f, frnum=05f7, flbase=01bba7dc, sof=0040, portsc1=0095, portsc2=01a5
: intrs=33921
: QH(0xc4e02f80) at 01ba8f80: hlink=01ba8fa2 elink=00000001

You might try hw.usb.debug=1 (or some higher value).

Warner