The following reply was made to PR usb/149162; it has been noted by GNATS.

From: Hans Petter Selasky <hsela...@c2i.net>
To: Alexey A Bukreev <le...@lepis.net.ru>
Cc: freebsd-usb@freebsd.org,
 freebsd-gnats-sub...@freebsd.org
Subject: Re: usb/149162: ASUS WL-167g doesn't work in 8.1 (continue of 149058)
Date: Mon, 2 Aug 2010 08:49:46 +0200

 On Sunday 01 August 2010 23:43:01 Alexey A Bukreev wrote:
 > On 31.07.2010 23:43, Hans Petter Selasky wrote:
 > > Can you compile the kernel with "options USB_DEBUG". Then set the
 > > following
 > > debug variable:
 > > 
 > > sysctl hw.usb.ural.debug=15
 > > 
 > > What is printed in dmesg, when you try to activate the wlan0?
 > > 
 > > --HPS
 > 
 > I compiled kernel with "options USB_DEBUG", set hw.usb.ural.debug to 15,
 > inputed into console "ifconfig wlan0 create wlandev ural0".
 > 
 > There are no messages in dmesg or 1st console. dmesg ends with string
 > "rl0: link state changed to UP"
 > 
 > In "top" process ifconfig uses 100% of CPU core. If you wish I can send
 > you the photo of "top".
 > 
 > After 10 minutes there several messages displays on dmesg:
 > 
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     1506 usec to 1483 usec for pid 1358 (csh)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     414 usec to 344 usec for pid 1317 (inetd)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     734 usec to 610 usec for pid 1277 (sendmail)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     544 usec to 452 usec for pid 1277 (sendmail)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     537 usec to 446 usec for pid 1273 (sendmail)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     687 usec to 570 usec for pid 1257 (sshd)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     4830 usec to 4629 usec for pid 966 (syslogd)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     304 usec to 253 usec for pid 811 (devd)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     7516 usec to 6244 usec for pid 811 (devd)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     18540 usec to 17888 usec for pid 4 (g_down)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     949398 usec to 793650 usec for pid 1 (init)
 >     Aug  2 01:25:46 lepis kernel: calcru: runtime went backwards from
 >     5350 usec to 4664 usec for pid 0 (kernel)
 > 
 > 
 > On 7.3-STABLE on the same computer I have the same messages, but all
 > works normally:
 > 
 >     calcru: runtime went backwards from 193 usec to 160 usec for pid 128
 >     (adjkerntz)
 >     calcru: runtime went backwards from 24328 usec to 20212 usec for pid
 >     30 (usbtask-dr)
 >     calcru: runtime went backwards from 633 usec to 560 usec for pid 24
 >     (swi6: task queue)
 >     calcru: runtime went backwards from 5000 usec to 4622 usec for pid 0
 >     (swapper)
 
 Hi,
 
 Try to enter the debugger from the console by pressing CTRL+ALT+ESC. Use bt to 
 get the backtrace. Then backtrace the ifconfig process. Figure out where it 
 gets stuck.
 
 Did you run:
 
 sysctl hw.usb.ural.debug=15
 
 --HPS
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