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: Tue, 07 Jan 2014 10:02:02 +0200 Message-ID: <87mwj8cj9h.fsf@intel.com> References: <1420080.HpJ4UCjVfA@rmbp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 64D871089C7 for ; Mon, 6 Jan 2014 23:59:01 -0800 (PST) In-Reply-To: <1420080.HpJ4UCjVfA@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" , Intel Graphics Development List-Id: intel-gfx@lists.freedesktop.org On Mon, 06 Jan 2014, "Lu, Ran" wrote: > I just got a Retina MBP with Iris Pro and Nvidia GT 750. The iGPU works in > OSX(Mavericks), but when I boot into Linux, the device was disabled. I > debugged the kernel a little, apparently when pci_bus_read_dev_vendor_id is > called for PCI 00:2.0 (the intel gpu), it returns -1 which indicates the > device is disabled. > > I can check all the registers in grub using setpci or pcidump, so it seems > before boot into the kernel the device is actually online, and I am looking > for some magical registers that I can set to enable the device. I did a ioreg > -l in OSX and the information about Iris Pro looks like this: Kernel version? Dmesg from early boot with drm.debug=0xe module parameter? BR, Jani. -- Jani Nikula, Intel Open Source Technology Center