Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752640Ab2HAQGV (ORCPT ); Wed, 1 Aug 2012 12:06:21 -0400 Received: from ks35366.kimsufi.com ([213.251.186.122]:32970 "EHLO meetr.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751241Ab2HAQGU (ORCPT ); Wed, 1 Aug 2012 12:06:20 -0400 Message-ID: <501953F2.9040807@meetr.de> Date: Wed, 01 Aug 2012 18:06:10 +0200 From: Andreas Heider User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: David Woodhouse , Matthew Garrett , Arun Raghavan , linux-kernel@vger.kernel.org, airlied@redhat.com Subject: Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume 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> In-Reply-To: <20120801155914.GB22963@thinkpad-t410> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2366 Lines: 46 Am 01.08.12 17:59, schrieb Seth Forshee: > On Wed, Aug 01, 2012 at 04:35:44PM +0100, David Woodhouse wrote: >> On Tue, 2012-07-31 at 10:18 -0500, Seth Forshee wrote: >>> >>> All of this is working to the extent that I can boot with the Radeon >>> card active, switch over to the Intel card, and get the EDID for the >>> internal panel and an external monitor (although oddly on an HDMI >>> connector, no on the DP like I expected). Both screens are remaining >>> blank though. However I'm also getting blank screens if I mux over to >>> the Intel GPU from grub before loading the kernel, which used to work >>> for the LVDS panel at least. >> >> Hm, when I was changing over to the external screen before boot, I could >> get the LVDS working but *not* an external VGA or DVI monitor (via the >> standard Apple adaptors). Should I expect that to work if I change the >> mux 'properly' at runtime? > > 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. The situation is a bit different on the Macbook Pro 6,2. OS X also automatically switches to the DGPU when an external monitor is connected, but unlike the 8,2, the IGPU works fine under Linux with external monitors if port 0x740 is set accordingly. I'm pretty sure that this is also the case with for the older macbooks without dynamic switching. > 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. > > 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/