linux-kernel - Re: USB snd-usb-audio wedges lsusb when unplugged while playing sound.

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Date:	Sat, 22 Jul 2006 17:20:42 +0100
From:	Ian Stirling <tandra@...ve.plus.com>
To:	Andrew Morton <akpm@...l.org>
CC:	linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net
Subject: Re: USB snd-usb-audio wedges lsusb when unplugged while playing sound.

Andrew Morton wrote:
> On Sat, 22 Jul 2006 13:12:37 +0100
> Ian Stirling <tandra@...ve.plus.com> wrote:
> 
> 
>>Config/... as my earlier message on USB - though with the bandwidth 
>>enforcement
>>turned off so it actually plays sound, when plugged into the USB1 port.
>>
>>2.6.17.
>>
>>Basically - playing sound with
>>mplayer -ao alsa:device=hw=1 or whatever - and then unplugging the
>>soundcard completely wedges lsusb/usb configuration, until the mplayer 
>>process is killed.
>>
>>cat /proc/bus/usb/devices stalls.
> 
> 
> Please get the machine into the wedged state, then do
> 
> 	dmesg -c
> 	echo t > /proc/sysrq-trigger
> 	dmesg -s 1000000 > foo
> 
> then send foo, thanks.


View attachment "foo" of type "text/plain" (15635 bytes)