Re: Wakeup from suspend with ati_remote?

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On Thu, 4 Nov 2010, Florian Echtler wrote:

> On Thu, 2010-11-04 at 10:45 -0400, Alan Stern wrote:
> > On Thu, 4 Nov 2010, Florian Echtler wrote:
> > > On Thu, 2010-11-04 at 09:56 +0100, Oliver Neukum wrote:
> > > > Am Donnerstag, 4. November 2010, 09:43:22 schrieb Florian Echtler:
> > > > > I'd like to wake up my PC from suspend using a X10 wireless remote,
> > > > > driven by ati_remote.ko. The receiver is connected to a hub along with
> > > > > an USB keyboard, and I can wake the machine using the keyboard, but not
> > > > > using the remote.
> > > I admit I'm a bit confused now. Are the .suspend and .resume functions
> > > needed for the wakeup functionality, or are they more of a nice-to-have?
> > You don't need runtime PM for wakeup support.  What you _do_ need to do
> > is make sure that wakeup is enabled for both your device and the USB
> > host controller it is plugged into.  That is, the power/wakeup file has
> > to contain "enabled" in both the device's sysfs directory and the host
> > controller's sysfs directory.  (Actually, the fact that the keyboard
> > can wake up the machine indicates that the controller is already
> > enabled for wakeup, so you only need to worry about the device.)
> I've checked all relevant /sys/.../power/wakeup files, and they all
> contain "enabled". Nevertheless, still only the keyboard is able to wake
> the machine... are there any other potential issues I could check?
> One observation: the receiver's LED turns off when the machine is in
> suspend, while the hub's LED is still on. Don't know if this has any
> relevance...

Hmm...  I see that the ati_remote driver doesn't support suspend/resume 
at all.  Can you use ati_remote2 instead?

Alan Stern

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