[Intel-gfx] [RFC] i915/acpi: add lid status notification and detection

Jesse Barnes jbarnes at virtuousgeek.org
Thu Jun 18 01:10:39 CEST 2009

On Wed, 17 Jun 2009 10:32:31 +0800
yakui_zhao <yakui.zhao at intel.com> wrote:

> On Wed, 2009-06-17 at 02:33 +0800, Jesse Barnes wrote:
> > Well, what should we use then?  Think of a common use case: you plug
> > in
> > an external monitor and shut your lid.  Do we want to make the user
> > manually change their configuration?  Or detect that the lid is no
> > longer in use?  And what about the case where they boot with the lid
> > closed (e.g. in a docked scenario)?  We want to support that
> > automatically too...
> This feature should work on most laptops. When the LID is closed, the
> LVDS is marked as disconnected.
> But this can't work for some boxes on which the initial Lid state is
> incorrect. We see such an exception on several laptops in ACPI
> bugzilla.
> If we expect this feature for most laptops, how about adding the
> exception boxes into the blacklist that doesn't support this feature?

Yeah, that's fine with me.  Is there a list somewhere?  Please don't
make me troll through ACPI bugzilla! :)

Jesse Barnes, Intel Open Source Technology Center

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