URGENT F14: Un-announced change to default dual-head config: intentional or accidental?

[Bill Nottingham]

Matthias Clasen (mclasen at redhat.com) said: 
> > Given how it got introduced (via the commit you pointed out), I guess
> > it'd make the most sense for us to ship an update which changes the
> > default to 'true', and report this upstream? Perhaps Joey didn't realize
> > this change has the effect of changing the previous default behaviour.
> > (I think previously the default was 'whatever X does', and for most
> > people/distros the X default would have been 'clone'; I think for Fedora
> > 13, the default was 'span'. Either way, it's not 'turn it off'.)
> 
> Looking at the code, if we change both keys to default to true, we'll
> end up with clone mode. If thats ok, we can do that. Its not 'whatever X
> does' either, though.

It sounds better than 'off' to me, at least. And clone mode is easier
to fix into span mode than span is easier to fix into clone mode, if
something goes wrong.

Bill