linux-kernel - Re: [PATCH v3 1/2] acpi: Add "acpi_osi=" for ASUS X200MA to enable, brightness keys

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Message-ID: <20141218143623.GA7335@srcf.ucam.org>
Date:	Thu, 18 Dec 2014 14:36:23 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Dmitry Tunin <hanipouspilot@...il.com>
Cc:	Josh Boyer <jwboyer@...oraproject.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	Aaron Lu <aaron.lu@...el.com>
Subject: Re: [PATCH v3 1/2] acpi: Add "acpi_osi=" for ASUS X200MA to enable,
 brightness keys

That's odd - it looks like the default behaviour in the absence of any 
OSI strings is to just default to an OSYS value that matches Windows 
2012, so disabling the 2013 value should be equivalent. If it's not, 
it's definitely not safe to turn off all values - there are several 
devices that change behaviour as a result.

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