Re: Does a USB mouse wake a system up from S3?

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On Mon, Apr 02, 2012 at 02:44:34PM -0400, Alan Stern wrote:
> On Mon, 2 Apr 2012, Hans Petter Selasky wrote:
> 
> > On Monday 02 April 2012 20:02:23 Don Zickus wrote:
> > > Hi,
> > > 
> > > I have some customers asking why a usb mouse doesn't wake a system up from
> > > S3 on RHEL-6.  I have poked at a 3.3 kernel and noticed the same
> > > behaviour.  Is this true or do I have something misconfigured?
> > > 
> > > I talked with Matthew Garret about this, he mentioned something like
> > > /sys/bus/usb/devices/usb1/power/wakeup would need to enabled for the mouse
> > > to work.  I tried this with no success.
> 
> In addition, you have to make sure the mouse itself is enabled for 
> wakeup.  And the host controller the mouse is attached to (although 
> this should be true by default).
> 
> > > So before I started to investigated, I was wondering what the expectations
> > > were for something like this.
> > 
> > Hi,
> > 
> > Sometimes you need to press a button on the USB mouse, before the USB remote 
> > wakeup event is generated, and not just move the mouse around.
> 
> Especially if it's an optical mouse.  When an optical mouse is 
> suspended, it doesn't get enough power to illuminate its LED.  Hence it 
> is unable to track any movements.

Thanks guys, I'll if these ideas work for me.

Cheers,
Don
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