On Tue, Sep 13, 2016 at 8:37 PM, fulaiyang <fulaiy...@163.com> wrote:
> hello, > Thanks for your reply and sorry to provide not enough information. > The IGD is the the primary graphics on the host and I am trying to do > legacy mode. The VM is SeaBIOS based and the system is a a desktop. My > configuration is as follows: > > *environment :* > > Intel Core i3-6100U @ 2.30GHz > Intel Corporation Sky Lake Integrated Graphics > Ubuntu 16.04 LTS *DESKTOP* > Host kernel 4.6.6 x86_64 GNU/Linux > qemu 2.7.0 > > > *configuration:* > > - */boot/config-4.6.6* > > CONFIG_VFIO_IOMMU_TYPE1=m > CONFIG_VFIO=m > CONFIG_VFIO_PCI=m > CONFIG_VFIO_PCI_IGD=y > CONFIG_VFIO_PCI_VGA=y > CONFIG_FW_CFG_SYSFS=y > CONFIG_FW_CFG_SYSFS_COMLINE=y > CONFIG_INTEL_IOMMU_DEFAULT_ON=y > > > - */boot/grub/grub**.cfg* > > /boot/vmlinuz-4.6.6 root=… quiet splash intel_iommu=on > vfio_iommu_type1.allow_unsafe_interrupts=1 $vt_handoff > modprobe.blacklist=i915 video=vesafb:off video=efifb:off > Does your kernel include simplefb (grep CONFIG_FB_SIMPLE /boot/config-4.6.6)? This can sometime claim resources on the IGD and interfere with assignment. Reports seem to indicate that an equivalent video=simplefb:off does not work with that driver. I've had good luck booting with i915 claiming IGD and then unbinding it to use for assignment. The problem comes with re-binding subsequent times, but i915 prevents the more esoteric console drivers from lighting up. Does QEMU print any messages when started?
_______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
