From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Newbury Subject: Re: Help to enable Iris Pro on Retina MBP 11.3 Date: Wed, 08 Jan 2014 13:46:11 +0000 Message-ID: <1389188771.25695.24.camel@artifact> References: <1420080.HpJ4UCjVfA@rmbp> <87mwj8cj9h.fsf@intel.com> <10142030.tYHTEt3bRC@rmbp> <87zjn6bzwc.fsf@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from know-smtprelay-omc-5.server.virginmedia.net (know-smtprelay-omc-5.server.virginmedia.net [80.0.253.69]) by gabe.freedesktop.org (Postfix) with ESMTP id E225BFA8D1 for ; Wed, 8 Jan 2014 05:54:33 -0800 (PST) In-Reply-To: <87zjn6bzwc.fsf@intel.com> 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: Jani Nikula Cc: Intel Graphics Development List-Id: intel-gfx@lists.freedesktop.org On Wed, 2014-01-08 at 11:12 +0200, Jani Nikula wrote: > 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. > > Might it be unable to allocate enough PCI address or it gets allocated above 4G? There are patches queued up for pci-next (plus a few in my tree for i915; I need to get back to these) to get PCI address space above 4G working. Probably unrelated...