Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755442Ab2EXNYt (ORCPT ); Thu, 24 May 2012 09:24:49 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:37311 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753010Ab2EXNYs (ORCPT ); Thu, 24 May 2012 09:24:48 -0400 Date: Thu, 24 May 2012 14:24:43 +0100 From: Matthew Garrett To: Keith Packard Cc: linux-kernel@vger.kernel.org, Bdale Garbee Subject: Re: [PATCH] acpi/video: Don't restore backlight to 0 at boot time Message-ID: <20120524132443.GA21231@srcf.ucam.org> References: <1325321547-20637-1-git-send-email-keithp@keithp.com> <20120103221954.GA2313@srcf.ucam.org> <86ehqajbkr.fsf@sumi.keithp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <86ehqajbkr.fsf@sumi.keithp.com> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 924 Lines: 23 On Thu, May 24, 2012 at 12:13:40AM -0700, Keith Packard wrote: > Matthew Garrett writes: > > > ACPI arguably does define 0 as being off (this is exceedingly poorly > > defined), but I'm not entirely happy with this - the firmware makes its > > behaviour conditional on the OS version. I'd really like to see an > > updated version of the Intel opregion spec to get a better idea of what > > we're meant to be doing here, but the last one made public was > > ancient. > > Kernel 3.4 continues to break on this machine; I'd love to know how to > get a suitable fix upstreamed... Still waiting for that spec. -- Matthew Garrett | mjg59@srcf.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/