.... "intel_iommu=on,igfx_off" means that HDMI audio output will work but PCI passthrough won't.
I already tried this, with lots of outputs: https://bbs.archlinux.org/viewtopic.php?id=204460 Thanks ! 2016-05-21 19:09 GMT+02:00 Colin Godsey <crgod...@gmail.com>: > intel_iommu=on,igfx_off should work > > On Sat, May 21, 2016 at 11:01 AM Le anonymous faker <etfa...@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@redhat.com >> https://www.redhat.com/mailman/listinfo/vfio-users >> >
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