RE: Probably Off-topic Question...

From: Grover, Andrew (andrew.grover@intel.com)
Date: Wed Jan 24 2001 - 18:49:39 EST


You are correct, this is supposed to be handled by ACPI. However, this has
yet to be implemented in Linux's ACPI support. Check back in 6 months. :)

Regards -- Andy

> -----Original Message-----
> From: alex@foogod.com [mailto:alex@foogod.com]
> Sent: Wednesday, January 24, 2001 2:52 PM
> To: Mark Smith
> Cc: Steven Ellmore; Steve Underwood; linux-kernel@vger.kernel.org
> Subject: Re: Probably Off-topic Question...
> Importance: High
>
>
> On Wed, Jan 24, 2001 at 05:38:54PM -0500, Mark Smith wrote:
> > On Wed, Jan 24, 2001 at 07:40:14PM +0000, Steven Ellmore wrote:
> > > My VAIO Z505HS brightness control works under Linux.
> > >
> > > Shift + Fn + Brightness (F5) dims
> > > Fn + Brightness brightens
> [...]
> > none of these things change my brightness one way or the other.
> > in particular, which part of the OS would be responsible for
> > watching these keystrokes and making the appropriate changes?
>
> With the Z505H/J series, this is handled entirely by the BIOS
> and the OS has
> no part of it. I'm not sure about the L's, but they're
> otherwise fairly
> similar to the H/J's. (I have absolutely no idea about other
> lines like the
> picturebooks, of course, as the different lines from Sony are
> effectively
> completely unrelated.)
>
> > others have told me about this keystroke. someone had suggested
> > that this works differently on my system because i have a newer
> > bios?
>
> This is possible. I don't know why they would change this,
> unless it was some
> requirement of propertly integrating the newer Windows
> versions, which is
> possible. In this case, my guess is that it's probably
> exposed via ACPI or
> something similar. Any ACPI folks got thoughts on this as a
> possibility (and
> how one might find out)? I have to admit I haven't played
> with it much.
>
> -alex
> -
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