klingan

I run 6.1.9. But is this really a issue with unraid in my case? I guessed that it is my motherboard and skylake that isn't suited for this. I just want to know if there is a work around? I might try upgrading to 6.2 later if nothing comes up, thanks.

Bump. I have searched the forum but no one have the exact same problem so I don't know how to solve it, if it even is possible. I'm not lazy, just very unexperienced with kvm/passthrought/VMs.

Hi I have 1st Windows vm working with 1st GTX 750ti GPU and now I've tried to add a second GPU to a openelec vm but get start up errors. I didn't know skylake CPUs was a bad choice for passthrough solutions when I got it... I read in some thread that someone moved the other device to another group by changing some parameter id thingie (lost track of the thread) but I don't know if that would help me too? And is it possible to move any of the devices in group 5? Like the NIC? I have tried ACS override and that just movies around the groups but the second GPU still have other devices in the same group. I would really appreciate some help. Here is the error: Here is my PCI device list: IOMMU GROUPS: *Edit* I forgot to add that I have tried moving the second GPU to another slot on the motherboard but it's still in group with the NIC and other devices.

Thanks, I'll save that file for later use. Rom?(what is the gpu rom?) That option isn't visable from the menu when creating the vm right?

I found a solution that seems to be working!! I remade the vm again.. and used SeaBios (might work with OVMF too) and Q35-2.3 instead of i440fx. And now I understand what you mean with demonic sound. I had to enable the Msi fix on both gpu and gpu-soundcard to get rid of the choppy sound. Now I have rebooted windows a few times and the sound is there every time. Even with having the server wake from S3 sleep and wol for both server and vm works great. Hope this can help someone else in the future. For anyone having problem finding the "Msi fix" here it is: http://lime-technology.com/wiki/index.php/UnRAID_6/VM_Guest_Support#Enable_MSI_for_Interrupts_to_Fix_HDMI_Audio_Support

Sadly though OVMF didn't solve it for me. With SeaBios i had no playback devices present and sometimes after either server reboot or just vm reboot the sound worked again, but with OVMF I had 3 Nvidia HD output but they all said not connected/unplugged. Tried both windows default driver and nvidia's. Made the Msi tweak to the GPU and rebooted, no change. And as a last thing I did the Msi fix on the Nvidia sound device too and then windows wouldn't boot. It just loops the "memory test ok" thingie. It doesn't mather since I havn't put any data on the vm yet. Any other tweak that could solve it? I want to put in another small gpu and run kodi/xmbc displayed on another hdmi port on the tv so I really want this to work. If i would just run one vm to the tv i could have used the motherboard sound to the gaming vm but that would leave the xmbc with no sound. Could this be something with the specifik gpu model I have and another nvidia model could work? Or is it more of a cpu/iommu group problem? Please tell me if there is any dump/info that would help troubleshoot this.

I'll try OVMF together with the Msi fix tomorrow, thanks.

I'm new at this and went with UNRAID after trying to setup passthrough with proxmox and failed. I've setup GPU passthrough to a windows 10 vm for gaming in my living room/tv and its working great! My only problem is that 90% of the times I boot the vm the sound device is either missing or sometimes not working. Using the device manager trying to reinstall the driver allways fails with an error. I have tried both with the default windows driver and the nvidia hd audio driver and it doesn't seem to mather as it has worked with both a few times but as soon as I shutdown the vm and start it again the sound is gone. Trying to install a driver (if there is any?) from the virtio didn't work either as it says "The device already have the best driver installed" or something alike. The Nvidia virtual audio device (wave extensible)(WDM) is always present and the High Definition Audio Device is the one that sometimes don't work or is missing. Sometimes it helped to edit the vm settings and switch from nvidia to vnc / no audio or the Realtek and then back to nvidia and boot the vm. If I change the soundcard to the Realtek on the motherboard it always works. I'm using i5 6400 skylake CPU and GTX 750 Ti GPU with seaBios settings. I guess it has something to do with the passthrough but I would appreciate some help as I can't solve it my self Thanks!