From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henrique de Moraes Holschuh Subject: Re: [PATCH] [RESUBMIT] Fix mute key on older Lenovo made Thinkpads by OSI blacklisting Date: Thu, 20 May 2010 16:14:39 -0300 Message-ID: <20100520191439.GA7595@khazad-dum.debian.net> References: <1272770432.15493.49.camel@laptop> <1274329374.4479.403.camel@laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from out1.smtp.messagingengine.com ([66.111.4.25]:34246 "EHLO out1.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752614Ab0ETTOo (ORCPT ); Thu, 20 May 2010 15:14:44 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: Jerone Young , ACPI Devel Maling List On Thu, 20 May 2010, Len Brown wrote: > and this _INI-time check is the only effect of LNUX: > > If (\LNUX) > { > \_SB.PCI0.LPC.EC.SAUM (0x02) > \UCMS (0x1C) > } > > Of course SAUM pokes the EC and UCMS is an SMI wrapper, > so we don't really know all they may do; but at least SAUM tells the EC to change the keyboard/event filter (at the very least, one would have to ask Lenovo to know for sure). UCMS (0x1C) tells the BIOS to change operating mode as well, probably to match whatever SAUM asked of the EC. As far as anyone knows, it is indeed restricted to the behaviour of the audio keys. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh