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Issues with GPU tearing on W10 VM & stuttering on Ubuntu VM

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I've been spending way more time than I have available to spend on trying to get a Windows 10 VM spun up with a GTX960 passed through. I'm about ready to give up on it and just reinstall windows 10 on the bare metal, but as I would really like to have unRAID set up, I figured I would come here to ask for suggestions before throwing in the towel. I have the following rig:

 

Motherboard: MSI z97 gd65

CPU: Intel i7-4790k

RAM: 32 GB

Disks: 240 GB SSD (cache), 1 TB HDD (data)

Graphics Cards: EVGA GTX960 MSI GTX960

 

My primary issue is that after downloading the vBIOS for both of the graphics cards and editing out the beginning portion as per SpaceInvader One's videos, I am able to assign each of the GPUs (one at a time) to a W10 VM. However, when I boot into the VM, the screen looks terrible. I am locked in at a resolution of 800x600 and the screen is severely torn. My bios is set up so that unRAID is always passed over the IGD and I have confirmed that it does not try and use either of the graphics cards. I have also tried passing through the graphics cards to a Ubuntu 17.04 Desktop install, but I have issues there as well. The video looks nice, but whenever any audio comes across, the audio is extremely laggy and choppy. For instance, it takes around 30 seconds to play the Ubuntu startup drums. When going to youtube, everything works nicely until you start trying to play a video, then it becomes extremely choppy and the video keeps freezing and unfreezing. In order to get the IOMMU groups to separate properly, I had to enable PCIe ACS override.

 

Hopefully someone here has an idea of what's going on and how I can resolve these issues.

 

As a side problem, I'm also having trouble getting my keyboard to work. I have a Corsair K95 and every once in a while unRAID will see it, but usually it doesn't. It has two USB plugs since it needs 1A and USB 2.0 supplies 0.5A, but it should only need 1 to be connected when plugged into USB 3, which I've done. Thank you in advance!

 

EDIT: I may have just solved all of my problems. I added an EVGA GTX970 and removed the other two GPUs. That caused the video to quit tearing, so far anyway. I also added a PCIe USB card and plugged the corsair keyboard into that and it's looking like unRAID can now see the keyboard. I was toying around with this card earlier, but couldn't get it to work. It has a SATA power cable on it that I haven't needed to use before, so I didn't bother with it. Unplugged some stuff to give the SATA power to the USB controller and now it sees it just fine. If that's how it needs to be, I guess I have no problem routing some SATA power to the card. I'll do some testing and update this thread once I am done.

 

EDIT 2: Well, somehow Ubuntu is even worse with this setup. It just displays a line of pipes ( | | | | | | | | | | | | | | | ) along the top of the screen and doesn't get anywhere. I tried deleting my vm and creating a new one, and just throws up a bunch of garbage on the screen and makes the sound stuttering noise. For now I'm just happy that I got Windows working properly and unless anyone has any ideas, I've got to work on some other things. Ubuntu will be revisited another day. Everything under Windows seems to work as intended. Audio is passed through my 5.1 jacks on the motherboard as well as HDMI on the graphics card. Videos seem to play fine. Games work. I was even able to activate Windows under the same old key that I had before.

 

EDIT 3: Decided to nix unRAID on my desktop and just reinstall windows to the bare metal. After a while, it started lagging a lot and I couldn't figure out why. The RAM and CPU were both fine. The only thing I can think of is that the cache array (single SATA SSD) was having issues. I eventually plan to free up a few more SSDs from my primary server in favor of M.2 devices. I may try again when I am able to put those into a 3 drive cache array.

Edited by bamhm182

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