The following reply was made to PR usb/181159; it has been noted by GNATS.

From: Hans Petter Selasky <h...@bitfrost.no>
To: Antonis Anastasiadis <anastasia...@datalive.gr>
Cc: freebsd-gnats-sub...@freebsd.org
Subject: Re: usb/181159: Problem attaching USB device
Date: Sat, 10 Aug 2013 15:52:39 +0200

 On 08/10/13 12:31, Antonis Anastasiadis wrote:
 > Thank you for your quick response.
 >
 > Óôéò 9 Áõã 2013, 11:25 ì.ì., ï/ç Hans Petter Selasky <h...@bitfrost.no> 
 > Ýãñáøå:
 >
 >> Hi,
 >>
 >> There are some debug parameters under:
 >>
 >> sysctl hw.usb.timings
 >
 > I've got no idea how to tune those.
 
 Try to double the values one by one.
 
 Any change?
 
 Need to reboot or re-plug the device before testing.
 
 --HPS
 >
 >> Which might affect the behavior of your device. Make sure you have the XHCI 
 >> patch for 9.2-RC1 which was in a big late, if you compiled the code 
 >> yourself.
 >
 > The source was ~2 days old. I just updated and recompiled the kernel today. 
 > The issue persists.
 >
 >> Could you show the dmesg about which USB controller is at usbus0 in the 
 >> non-working case?
 >
 > usbus0 on xhci0
 > usbus0: 5.0Gbps Super Speed USB v3.0
 >
 > The m/b is an MSI MS-7816 with the Intel® Z87 Express Chipset.
 >
 
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