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SubjectRe: [PATCH 1/3] ACPI: Provide config option to disable BIOS brightness changes on power events
On Fri, Feb 17, 2012 at 08:27:04PM +0100, Pavel Machek wrote:
> Hi!
>
> > The default ACPI behaviour is to instruct the BIOS to automatically change
> > brightness on power events. This may be undesirable for distributions who
> > manage brightness in userspace. Provide a config option that disables this
> > behaviour and leaves brightness control up to the OS.
>
> Should this be configured during runtime?
>
> Like... when userspace power management starts, it disables this?

This is ACPI-specific. It's not emulated by any of the other backlight
drivers. There's no terribly easy way to have generic userspace handle
it.

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


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