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

[Le anonymous faker]

.... "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 <crgodsey at gmail.com>:

> 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
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/vfio-users/attachments/20160524/bf62f41b/attachment.htm>