linux-kernel - Re: usb mouse not responding after resume

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Message-ID: <Pine.LNX.4.44L0.0907101052500.2906-100000@iolanthe.rowland.org>
Date:	Fri, 10 Jul 2009 10:56:42 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Miklos Szeredi <miklos@...redi.hu>
cc:	linux-usb@...r.kernel.org, <linux-input@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: usb mouse not responding after resume

On Fri, 10 Jul 2009, Miklos Szeredi wrote:

> Sometimes after resume the usb mouse plugged into my T60 notebook
> isn't working.  Unplugging and replugging it fixes the problem.  A
> keyboard is also plugged in, which works normally every time.
> 
> This has been happening on and off from about 2.6.30-rc* but in
> 2.6.31-rc* seems to be getting more frequent.

Looks like something is wrong with the mouse itself.

> Here's the suspend-resume-replug part of the dmesg.  Not sure if it is
> enough, I'd be happy to provide more info.

The log showed that the mouse disconnected itself during the suspend.  
But then after the resume it reconnected -- presumably this log shows a
cycle where the mouse _was_ working afterward.

Can you provide a similar log for a cycle where the mouse _didn't_ 
respond afterward?  It might not help much, however; most likely it 
will show that the mouse disconnects itself during the suspend and then 
doesn't reconnect.

Have you tried plugging the mouse into a different USB port?  It might 
help.

Alan Stern

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