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From: Andrew Morton <akpm@osdl.org>
To: Ian Stirling <tandra@mauve.plus.com>
Cc: linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net
Subject: Re: USB snd-usb-audio wedges lsusb when unplugged while playing sound.
Date: Sat, 22 Jul 2006 08:44:29 -0700	[thread overview]
Message-ID: <20060722084429.6d00217b.akpm@osdl.org> (raw)
In-Reply-To: <44C21635.5090808@mauve.plus.com>

On Sat, 22 Jul 2006 13:12:37 +0100
Ian Stirling <tandra@mauve.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.

  reply	other threads:[~2006-07-22 15:44 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-22 12:12 USB snd-usb-audio wedges lsusb when unplugged while playing sound Ian Stirling
2006-07-22 15:44 ` Andrew Morton [this message]
2006-07-22 16:20   ` Ian Stirling
2006-07-22 16:49 ` [linux-usb-devel] " Christopher Montgomery
2006-07-22 17:00   ` Ian Stirling
2006-07-22 17:04     ` Christopher Montgomery
2006-07-22 23:52 ` Alan Stern

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