Re: Compaq evo n800v

[Karol Kozimor <sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org>]

Thus wrote Stephan Krings:
> > I don't know how about the Evo, but on Asus those keys generate ACPI
> > events, yet there are methods in DSDT for handling those events and they
> > work irregardless to external conditions.
> Just out of curiousity: How are these methods called or do these
> methods comply with the VGA extensions, which are described in the
> ACPI spec?

No, they do not. These are internal \_SB.PCI0.PX40.ECD0._Q0E and
\_SB.PCI0.PX40.ECD0._Q0F to increase and decrease brightness (these are 
mapped to the hotkeys in the DSDT), and GPLV and SPLV to get and set it 
directly, probably designed for ospm (which I use in the driver).

> > Search your DSDT for such methods.
> Already did so: And none of the methods get hit when toggling the
> display brightness. Which is pity, because that would have made it
> possible to write a module like the one for Toshiba notebooks to alter
> display parameters programmatically.

Well, these might not be obvious to spot. Cross-referencing and indexing
help a lot in that. Check for IndexFields with interesting names, perhaps
you'll find something anyway.
Best regards,

-- 
Karol 'sziwan' Kozimor
sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org


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