On Wed, Jan 8, 2014 at 7:12 PM, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote: > On Tue, 07 Jan 2014, "Lu, Ran" <hephooey@xxxxxxxxx> 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? > The EFI disables it, at least as on the previous model. It was possible to install an ap under OSX set the intel gfx as the default, and reboot. Dave. _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
