[RFC PATCH] xfree86: Lid status hack

Aaron Plattner aplattner at nvidia.com
Mon Jul 30 13:39:26 PDT 2012

On 07/30/2012 01:08 PM, Alex Deucher wrote:
> On Mon, Jul 30, 2012 at 3:43 PM, Adam Jackson <ajax at redhat.com> wrote:
>> If more than one output is connected, and there's only one ACPI lid
>> device, proxy the state of the lid into the LVDS / eDP connectivity.
>> This way we don't suffer from broken lid-status from the firmware in
>> a way that would result in nothing lighting up.
>> This is terribly Linux-specific and I don't think we should merge it
>> as-is, I'm mostly trying to generate some discussion.  There's some
>> weird corner cases that come out of this since we're still doing the
>> "poke one thing at a time" model, and we don't explicitly turn _off_
>> outputs during initial setup, so X and kernel's view of the world
>> gets out of sync.
>> I think ideally we'd do this in the DRM, but I was unable to come up
>> with a clean way to do it there.  Maybe it just needs to be ugly.
> Seems like something X shouldn't care about.  Too many ways to do the
> wrong thing.  Maybe just report always report connected for LVDS/eDP
> and let the desktop environment figure out what to light up based on
> lid state, saved preferences, etc.

Would reporting lid state through a standardized RandR 1.x property be a 
reasonable compromise?  That would keep the /proc/acpi / /sys / whatever mucking 
about confined to the drivers, or at the very least, the X server.

-- Aaron

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