Re: [PATCH] Add Intel ACPI IGD OpRegion support

Matthew Garrett
2008-08-06T00:13:05Z

On Tue, Aug 05, 2008 at 11:47:54PM +0200, Yves-Alexis Perez wrote:

> In booted into X (with hal, powersaved, dbus etc. running), and then,
> tada, brightness keys work. There is a 750ms (I guess) delay, and I
> don't know who is really responsible, I guess X is. (and thus I guess
> the opregion is the one needed, and X manages the brightness. If the
> kernel was, it would be working even in single user)

The 750ms delay is from thinkpad-acpi. I sent a patch to Henrique which
makes it go away, but I'm not entirely sure what the ACPI method
concerned is supposed to be doing. The opregion code won't currently run
until X is started because the drm layer requires X to be the foreground
vt before handling IRQs.

--
Matthew Garrett | mjg59@srcf.ucam.org