On Tue, Jun 18, 2013 at 02:40:22AM +0200, Tori Mus wrote:
> Hello,
> 
> first I've to admit I'm really excited with OpenBSD. Today finished a fresh
> install, most things do work out of a box, sane defaults, excellent
> documentation, impression of consistent design and smooth experience so
> far. Deserted from Linux world because things get constantly breaking
> (repeated kernel regressions, system inits, devices management, userland
> instead of system solutions like networking or power handling, etc. etc.).
> 
> Sorry for the above intro but I'm very pleased to just found what I've been
> (hopefully) looking for.
> 
> To significantly reduce power consumption on a notebook, I'd need yet to
> disable the discrete nvidia graphics adapter to a fully satisfaction.
> After some investigation of acpidump output I have the proper AML to be
> sent/evaluated to take an effect of turning off this card. Is there some
> tool or similar way how to evaluate/send this AML ? Or do I have to write
> my own code by `9 aml_evalnode' man page ? Did tested on FreeBSD with
> acpi_control and did worked reliably.
> 
> Any idea ?

We don't have a proxy like that in userland. Not even for testing
or development. So your best bet is to either write your own tool
(which would probably be the fastest method) or find a place for your
work in the kernel and submit a patch (cleanest method but also hard
to get right and hard to generalize for more than your model).

If you chose the later look at specialized devices such as acpisony(4),
acpiasus(4), acpithinkpad(4) and others in sys/dev/acpi.

We don't really support nvidia graphic cards so this will be
interesting.

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