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

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Date:	Fri, 10 Jul 2009 16:32:50 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	K R I S K <kdbbox@...il.com>
cc:	Miklos Szeredi <miklos@...redi.hu>, <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, K R I S K wrote:

> Thanks Allan.
> 
> We need to look into the console messages of the bootloader rather than
> dmesg's.

What bootloader?  What's the connection between booting and 
suspend/resume?

> the second USB - mouse may not be resumed or initialized
> 
> solution one:
> 
> The resistor value may have to be changed ; for example in PPC the following
> resistor values would release the reset to PPC
> 1. No install R670
> 2. Install R776

We're talking about a T60 notebook.  It doesn't use a PPC.

> Second Solution:
> 
> The USB devices can be re-initialized after suspend or when resuming
> by issuing the following sequence of commands: USB_STOP(),
> DELAY(),USB_INIT()
> in the bootloader's board specific file with in conditional High speed and
> Lowspeed flags for USB.

What bootloader?  What board-specific file?

Besides, it won't help.  The log shows that the kernel did reset the 
USB controller.

Alan Stern

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