[systemd-devel] Implementing remote wake-up for Bluetooth

[Bastien Nocera]

On Sun, 2014-09-21 at 05:47 +0200, Marcel Holtmann wrote:
> Hi Bastien,
> 
> > I wanted to add a toggle box like the one MacOS X has had for a long
> > while, allowing users to wake up their system using a Bluetooth
> > keyboard.
> > 
> > The procedure is here:
> > https://github.com/lwfinger/rtl8723au_bt/blob/master/readme.txt
> > 
> > We could also always allow remote wake-up when a keyboard or joystick
> > has been paired, I'm not too fussed.
> > 
> > Ideas on how this should be implemented?
> 
> actually there is a bit more to do than just enabling USB remote
> wakeup. That is just the bare minimum we need to support.

Right.

> On the Bluetooth side, we would actually have to change the HCI event
> mask to only produce certain events. Otherwise the controller (and
> with that the host) can wake up for all kinds of reasons. In addition,
> we would need to program the specific addresses that allow us to wake
> up. Otherwise anybody knowing your address can trick your system to
> wake up for no reason.

Should that be implemented in BlueZ instead then?

> Besides BR/EDR mice and keyboards, we also have LE mice these days.
> They operate a little bit different and might need some extra magic to
> handle wake ups.

I don't think we want mice to wake up the computer, be they LE or not.
If there are LE keyboards though, this is a different problem.