From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ondrej Zary Subject: Re: [PATCH v3] Enable A20 using KBC for some MSI laptops to fix S3 resume Date: Mon, 5 Nov 2012 21:35:19 +0100 Message-ID: <201211052135.20009.linux@rainbow-software.org> References: <201210261056.44225.zary@gsystems.sk> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201210261056.44225.zary@gsystems.sk> Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: hpa@zytor.com Cc: Alan Cox , "Rafael J. Wysocki" , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-acpi@vger.kernel.org On Friday 26 October 2012 10:56:44 Ondrej Zary wrote: > Some MSI laptop BIOSes are broken - INT 15h code uses port 92h to enable > A20 line but resume code assumes that KBC was used. > The laptop will not resume from S3 otherwise but powers off after a while > and then powers on again stuck with a blank screen. > > Fix it by enabling A20 using KBC. Affected laptop list and DMI data are > from bug reports at Ubuntu Launchpad. > > Also add kernel parameter to easily activate this quirk on any system. > > Only compile tested. The original patch was tested with EX600 and PR200. > > Fixes https://bugzilla.kernel.org/show_bug.cgi?id=12878 The bug was marked as RESOLVED CODE_FIX but I wonder what happened to this patch. Was it applied? Or is someone working on a better way to fix this problem? -- Ondrej Zary