Re: Dell D600: teaching radeonfb how to wake up...

[Emmanuel Thome <Emmanuel.Thome+acpi-/zGXu1G9BXs@public.gmane.org>]

On Fri, Nov 21, 2003 at 12:47:08AM +0100, Pavel Machek wrote:
> Hi!
> 
> > > If I were you, I'd create fix_ati.o module which would
> > > "do the stuff", then insert it over network. That should
> > > make debugging easier...
> > 
> > Nah, we really have to re-POST the chip. I don't know how
> > we are supposed to do that though. Either we'll have to have
> > the full POST code for a bunch of ATI chips around, which doesn't
> > seem reasonable and I don't think windows drivers do that, or
> 
> Well, if he wants to do the work for his concrete ATI chip, its fine
> with me, and I'd like to see the results.
> 
> Having fix_ati.o module is certainly easier than playing with driver
> model for testing...
> 								Pavel

Certainly, it would be of great value, even if the finally chosen path is
to do the POST code. If I recall recent discussions about this on the
list, a couple of folks seem to prefer this ``hard way'' than the real
mode/int10 stuff, for reasons I understand.

Still, as you (Pavel) have yourself remarked, video chips suffering from
this unconfigured wake-up disease are tantamount. It could even be the
case of _most_ chips. If an interface for calling real mode stuff makes
it possible to cure, say half of these graphics cards for x86 laptops,
then that's not bad at all.

OTOH, even if the windows ati drivers do not fully repost the chip, the
MacOS drivers possibly _do_ such a thing, don't they ? Or do they really
get by using D2 state always ? Ben ? 

E.


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