linux-kernel - Re: dead USB devices after resume [mmotm 2009-02-10-16-35]

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Message-ID: <Pine.LNX.4.44L0.0902111009260.3056-100000@iolanthe.rowland.org>
Date:	Wed, 11 Feb 2009 10:53:22 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Jiri Slaby <jirislaby@...il.com>
cc:	linux-kernel@...r.kernel.org, <mm-commits@...r.kernel.org>,
	Greg KH <gregkh@...e.de>, USB list <linux-usb@...r.kernel.org>,
	<linux-input@...r.kernel.org>
Subject: Re: dead USB devices after resume [mmotm 2009-02-10-16-35]

On Wed, 11 Feb 2009, Jiri Slaby wrote:

> On 02/11/2009 01:36 AM, akpm@...ux-foundation.org wrote:
> > The mm-of-the-moment snapshot 2009-02-10-16-35 has been uploaded
> 
> Hi,
> 
> when I resume from suspend, USB mouse and kbd are not responding anymore, no
> LEDs, nothing. I need to unplug and replug to get it working. This is a
> regression since mmotm based on 2.6.29-rc2 which is fine.
> 
> Any ideas before I start bisection?

In theory the lack of S4 support shouldn't cause this to happen.

You might want to build a kernel with CONFIG_USB_DEBUG enabled.  The 
extra debugging information should help find the problem.

Alan Stern

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