linux-kernel - Re: s2ram slow (radeon) / failing (usb)

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Date:	Mon, 3 May 2010 08:34:49 +0200
From:	Bruno Prémont <bonbons@...ux-vserver.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	dri-devel@...ts.freedesktop.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
Subject: Re: s2ram slow (radeon) / failing (usb)

On Sun, 2 May 2010 17:59:17 -0400 (EDT) Alan Stern wrote:
> On Sun, 2 May 2010, Bruno [UTF-8] Prémont wrote:
> 
> > > There's no way to fix the USB problem without knowing what goes
> > > wrong. Let's see how far you get before the system freezes on a
> > > kernel with CONFIG_USB_DEBUG enabled.
> > 
> > Am I missing something?
> > 
> > I've enabled CONFIG_USB_DEBUG but don't see any additional module
> > parameter nor anything extra to toggle and I don't get more output
> > than without it.
> 
> Depends what you mean by "output".  The kernel generates more log 
> messages, but they may not get sent to your console.  You need to
> make sure the console's log level is set high enough to see debugging 
> messages.  For example:
> 
> 	echo 9 >/proc/sys/kernel/printk
> 
> or type Alt-SysRq-9.

I've been doing `dmesg -n 8` (9 is rejected as invalid) so it should
send out everything.
It looked like there was some more output during boot-up, but nothing
during suspend, at least up to the freezing point.

Bruno
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