Re: Sane behavior of fbset

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

> The flow of fbset is upstream:  fbset->fbdev->fbcon->vc (2.4 code)
> The flow of stty is downstream: stty->vc->fbcon->fbdev (2.6 code)
> 
> I don't know how radeonfb does it though.

I still think (didn't I repeat it often enough) that the whole idea
of stty "inventing" modes based on console size is broken. We simply
can't rely on good enough monitor detection & mode list building to
be able to pick proper modes. Not only our code is far from ready for
that, but it will also call all sort of problems to users (remember
you monitors that need different subtle geometry settings for each
different mode you use ?)

It may have looked like a nice idea, but I think it's just wrong.

fbset sends an ioctl straight to the fbdev, and doesn't update fbcon
at the moment. The callback mecanism I added for power management
should allow to restore 2.4 functionality there, but this has not
been implemented yet afaik.

Ben.




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