Re: ACPI: Idle Processor PM Improvements

[Pavel Machek]

On Wed 2006-09-06 08:58:49, Jordan Crouse wrote:
> On 06/09/06 12:37 +0200, Pavel Machek wrote:
> > Hi!
> > 
> > > > 2.4 and 2.6 are *very* different here. You'll probably need to optimize freezer
> > > > in 2.6 a bit...
> > > > 						
> > > 
> > > Among other problems: e.g. 2.4 did not automatically do a VT switch; 2.6
> > > does; we'll have to have a way to signal "we're a sane display driver;
> > > don't switch away from me on suspend".
> > 
> > Not like that, please.
> > 
> > You are using X running over framebuffer, right? So that kernel is
> > controlling the graphics hardware. In such case it is safe to avoid VT
> > switch.
> 
> Actually not - the Geode GX has full 2D hardware acceleration with a complete
> X driver to match.  No Xfbdev here.

Ok, so what is needed is message to X "we are suspending", and X needs
to respond "okay, I'm ready, no need for console switch".

Alternatively, hack kernel to take control from X without actually
switching consoles. That should be possible even with current
interface.
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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