[vfio-users] intel_iommu=on breaks audio on haswell cpu

[Colin Godsey]

intel_iommu=on,igfx_off should work

On Sat, May 21, 2016 at 11:01 AM Le anonymous faker <etfaker at bestmail.ws>
wrote:

> Lė Patrick 🚗👔☀ Sneida:
> Hey there,
>
> just recently I discovered that the kernel command line "intel_iommu=on"
> breaks audio output (glitching/freezing output via laptop speakers, no
> output at all via HDMI) for owners of haswell cpu's.
> Changing it to "intel_iommu=igfx_off" resolved the issue.
> How ever, in order to use PCI passthrough of my NVIDIA Card to VirtualBox,
> I need the parameter "intel_immou=on" ?
>
> Is there a way to fix the audio glitching with intel_iommu=on ?
> Is there a way to get nvidia pci passthrough to working without
> intel_iommu=on (e.g. intel_iommu=igfx_off) ?
>
> Lots of outputs and other users reporting:
> https://bbs.archlinux.org/viewtopic.php?id=204460
> https://bugzilla.kernel.org/show_bug.cgi?id=60769
>
> Kind regards !_______________________________________________
> vfio-users mailing list
> vfio-users at redhat.com
> https://www.redhat.com/mailman/listinfo/vfio-users
>
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