From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: Help to enable Iris Pro on Retina MBP 11.3 Date: Wed, 08 Jan 2014 11:12:35 +0200 Message-ID: <87zjn6bzwc.fsf@intel.com> References: <1420080.HpJ4UCjVfA@rmbp> <87mwj8cj9h.fsf@intel.com> <10142030.tYHTEt3bRC@rmbp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id B3392FAE6A for ; Wed, 8 Jan 2014 01:09:39 -0800 (PST) In-Reply-To: <10142030.tYHTEt3bRC@rmbp> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org To: "Lu, Ran" Cc: Intel Graphics Development List-Id: intel-gfx@lists.freedesktop.org On Tue, 07 Jan 2014, "Lu, Ran" wrote: > Hi Jani, > > As a matter of fact, I tried kernel from 3.9 to 3.13-rc6, all of them cannot > read the pci information from 0:2.0, and lspci do not have Iris Pro as a video > controller. I put in the attachment dmesg output from 3.12.6, I added some > printk to show the results from pci_bus_read_dev_vendor_id, otherwise it is a > vanilla kernel. I do not think I get any extra information by adding > drm.debug=0xe because the pci device is never registered properly, but it was > there anyway.The weird thing is grub can read pci device fine, I took a picture > since I do not know how to save outputs in grub console. I did some test with > another laptop with a working HD 4600. It seems even if I use setpci -s 0:2.0 > 4.b=0 to disable the device, it is still responsive to further setpci and I > can bring it back by setting 4.b=7. Now it does not look like the video card > is disable. I guess maybe something wrong in the ACPI table triggered the > kernel to read the wrong place. But still strange it only missed that > particular bus. In case you are interested, I also put the dsdt table in the > attachment, I can provide other tables if they are important. I don't have much clues here. Are there any bios settings you could tweak? Did you try without the nvidia driver loaded? BR, Jani. -- Jani Nikula, Intel Open Source Technology Center