[RFC] Xdummy standalone binary or "-dummy" switch

Jamey Sharp jamey at minilop.net
Sun Oct 2 01:53:12 PDT 2011

On Fri, Sep 30, 2011 at 08:53:25AM +1000, Peter Hutterer wrote:
> On Thu, Sep 29, 2011 at 12:10:29PM -0700, Jamey Sharp wrote:
> > I use these settings in my nested/dummy testing, which seem to suffice
> > for me:
> > 
> > Section "ServerFlags"
> >     Option "AutoEnableDevices" "false"
> >     Option "AutoAddDevices" "false"
> > EndSection
> > 
> > I'm not sure even AutoEnableDevices is relevant; I think AutoAddDevices
> > is the important flag. You shouldn't need to add any input devices, not
> > even "void" ones.
> There's little need for AutoEnableDevices ever. I think the main reason it
> is there is because XI 1.3- had a rather different notion of
> enabled/disabled devices than we have now.
> If your nested driver needs to disable this, we could add a hook to the
> DDX to let a driver toggle AAD defaults. 

You might reasonably want to have a real video driver alongside a nested
screen in a Xinerama setup, and use all your real input devices. I'm not
sure the presence of a nested screen is the right hint to suppress

This seems related to Lennart's multi-seat bits, sort of. We usually
want input devices bound together with particular output devices. Since
a dummy or nested driver doesn't naturally have any real input devices
bound to it, we wouldn't normally want any pulled in.

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