Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755905Ab2HATlz (ORCPT ); Wed, 1 Aug 2012 15:41:55 -0400 Received: from casper.infradead.org ([85.118.1.10]:48203 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755818Ab2HATlq (ORCPT ); Wed, 1 Aug 2012 15:41:46 -0400 Message-ID: <1343850102.26866.169.camel@shinybook.infradead.org> Subject: Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume From: David Woodhouse To: Seth Forshee Cc: Matthew Garrett , Andreas Heider , Arun Raghavan , linux-kernel@vger.kernel.org, airlied@redhat.com Date: Wed, 01 Aug 2012 20:41:42 +0100 In-Reply-To: <20120801155914.GB22963@thinkpad-t410> References: <20120710160555.GA31562@srcf.ucam.org> <20120710163516.GE10194@thinkpad-t410> <4FFCC7FB.1090609@meetr.de> <1343522547.2488.12.camel@shinybook.infradead.org> <1343524730.1962.5.camel@shinybook.infradead.org> <20120729193953.GA25132@srcf.ucam.org> <1343595171.2511.1.camel@shinybook.infradead.org> <20120729205859.GA25819@srcf.ucam.org> <20120731151856.GA19979@thinkpad-t410> <1343835344.26866.150.camel@shinybook.infradead.org> <20120801155914.GB22963@thinkpad-t410> Content-Type: multipart/signed; micalg="sha1"; protocol="application/x-pkcs7-signature"; boundary="=-rFUU5syq/phBn8/tNM2i" X-Mailer: Evolution 3.4.3 (3.4.3-2.fc17) Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10531 Lines: 164 --=-rFUU5syq/phBn8/tNM2i Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2012-08-01 at 10:59 -0500, Seth Forshee wrote: > I don't think the mini-DP port works at all with the integrated > graphics, at least not on a Macbook Pro 8,2. I played around with it > yesterday under OS X. When using the DGPU with an external monitor it > works fine, but any attempts to switch to the IGPU were rejected by the > drivers. If I forced it to the IGPU prior to connecting the external > monitor the screen just remained blank when I plugged it in, until I > switched back to the DGPU. It's odd though that the DDC can be switched > over to the IGPU. I get a blank screen when I use the VGA adapter, and with the dual-link DVI adapter I get a barely responsive machine continually printing=20 [ 1076.439623] [drm:intel_dp_complete_link_train] *ERROR* failed to train D= P, aborting as described at https://bugzilla.redhat.com/show_bug.cgi?id=3D843779#c8 And a blank screen. I thought someone had said they'd got it working with a native DP monitor, rather than the converters. > Iirc you've got the 8,3, and I'd expect it to be identical to the 8,2 in > this respect. Also, the only reason my LVDS didn't work was because I > wasn't telling i915 to disable SSC. I've got a patch to add a quirk for > this that I'll send soon, since there still doesn't seem to be any way > to get the vbios for the Intel graphics. I think your patch won't cover the 8,3. 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation = Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (= prog-if 00 [VGA controller]) Subsystem: Apple Computer Inc. 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