linux-kernel - Re: ACPI quirks - acpi_osi="!Windows 2006" required on FSC Amilo notebooks to enable brightness keys

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Message-Id: <539929391@web.de>
Date:	Sat, 09 Jan 2010 20:14:59 +0100
From:	Peter Paul <abnominales@....de>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ACPI quirks - acpi_osi="!Windows 2006" required on FSC Amilo notebooks to enable brightness keys

On  09.01.10 18:09:1, Matthew Garrett wrote:
> What do you mean by "work"? 
By "work" I mean the change the backlight brightness
> Do you get any ACPI interrupts when you hit 
> the keys without the override parameter?

Nope, neither with nor without acpi_osi="!Windows 2006", there is nothing in dmesg, no output in acpi_listen and no event in xev.
I've compared the ACPI messages in dmesg with and without the parameter, the only change is the rather obvious 
ACPI: Deleted _OSI(Windows 2006)

I've attached the 'normal' dmesg output as well as the diff to the output with the acpi_osi parameter set
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Download attachment "dmesg.txt" of type "application/octet-stream" (31257 bytes)

Download attachment "dmesg.diff" of type "application/octet-stream" (8136 bytes)