Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756540Ab2HNPQD (ORCPT ); Tue, 14 Aug 2012 11:16:03 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:58192 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756449Ab2HNPP7 (ORCPT ); Tue, 14 Aug 2012 11:15:59 -0400 Date: Tue, 14 Aug 2012 10:15:43 -0500 From: Seth Forshee To: Bernhard Froemel Cc: Matthew Garrett , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: Re: [PATCH V2 2/2] apple_gmux: Add support for newer hardware Message-ID: <20120814151543.GD18992@thinkpad-t410> Mail-Followup-To: Bernhard Froemel , Matthew Garrett , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org References: <1344898369-4944-1-git-send-email-mjg@redhat.com> <1344898369-4944-2-git-send-email-mjg@redhat.com> <20120814004625.GB18992@thinkpad-t410> <502A5B40.9010303@vmars.tuwien.ac.at> <502A667B.2060100@vmars.tuwien.ac.at> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <502A667B.2060100@vmars.tuwien.ac.at> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1110 Lines: 26 On Tue, Aug 14, 2012 at 04:53:47PM +0200, Bernhard Froemel wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Only in relation to Seth's future apple-gmux patch series about > vgaswitcheroo and restoring the gmux device configuration across > suspend/resume [1]: > On resume the gmux registers 0x28 (DDC) and 0x10 (SWITCH_DISPLAY) > (i.e., the first two writes) are not restored (result: the screen > remains black after suspend/resume). > > Of course, this does not happen with my patch proposal ;) > Unfortunately, I have not the time to sort this out in the next couple > of days -- on the other hand this is probably not a problem w.r.t. > this patch, but needs to be taken care of in Seth's patch series. The patch adding support for switcheroo *does* restore those registers on resume. Are you saying that isn't happening when you use it? Seth -- 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/