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Asrock 970 Extreme4 Esxi GPU passthrough issues

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  • Graphics Cards
  • Memory
Last response: in Business Computing
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July 13, 2014 10:01:03 AM

Please help me Uber Geeks
Alright, been playing with ESXi for a couple years, I have two boxes working flawlessly, so I undertand the basics of using it and passthrough.
My new task is that I am attempting to build a machine to use GPU passthrough to house all my desktops I keep in my office. I am trying to get the video cards to passthrough and am having a hell of a time.
I can get usb passthrough working fine, all devices seem to passthrough fine on the esxi consol, but after I get the graphics card passed through, drivers installed and working, I REBOOT and bam, the esxi box freezes up and I have to do a manual reboot.
I have tried most everything, UEFI or regular bios on motherboard, Not EFI bios in VM (Can’t get it to work). 2 gig minimum ram, pci hole start, devcon script at boot up and shutdown, reserving the system memory. No tweaks seem to work. I don’t get blue screens, green screens purple screens. Just locks up esxi and I have to manually shut off and turn back on. Everytime on the VM reboot. If I do disable the 3d vmware display adapter I can reboot, so I am guessing if I can fix that I am home free. All the graphics cards are ATI
This is a completely new system that consists of the following, I am running esxi off a thumbdrive
Asrock 970 Extreme 4 motherboard
8320 FX 8 core processor
32 gig of RAM
ATI 5450 graphics card pcie x1
ATI 6760 graphics card pcie x16
Sapphire Radeon R9 270X 2GB GDDR5
Highpoint 1144C – Works fine for passthrouhg – I highly recommend these, worth the money

I have to install the catalyst drivers and the VMtools to get passthrough working, works great, UNTIL REBOOT

HELP ME OBI WAN, YOUR MY ONLY HOPE

More about : asrock 970 extreme4 esxi gpu passthrough issues

July 17, 2014 10:21:51 AM

Perhaps you may want to look into Hyper-V with RemoteFX. That might handle the video pass-through better.

Also, I'm not sure why you want to have each virtual desktop utilize a different video card. Why not just use the R9 to run all of them? Those older cards really aren't helping; indeed, they seem to be detrimental based upon your lockups.
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July 19, 2014 5:42:49 PM

I had no idea that you could pass through 1 video card to 4 different VM's. Please do tell how you configured this as i am very interested. I felt very familiar with vmware and pass through but i had NO IDEA you could passthrough devices to several different VM's.

Also which video cards are you familiar with working with passthrouhg on esxi?

Thanks for responding to my post and sharing your wisdom with me and others in this boat.
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July 21, 2014 9:00:20 AM

matt21572 said:
I had no idea that you could pass through 1 video card to 4 different VM's. Please do tell how you configured this as i am very interested. I felt very familiar with vmware and pass through but i had NO IDEA you could passthrough devices to several different VM's.

Also which video cards are you familiar with working with passthrouhg on esxi?

Thanks for responding to my post and sharing your wisdom with me and others in this boat.


Well, I'm actually talking about Microsoft's RemoteFX, VMWare's ESX ESX. RemoteFX allows for GPU Virtualization:

"GPU Virtualization is a technology that exposes a virtual graphics device to a virtual machine. RemoteFX exposes a WDDM driver with the virtual desktop, and it allows multiple virtual desktops to share a single GPU on a Hyper-V server."

I'm not sure what you're trying to accomplish here, so perhaps the above does not apply to you. The info above is about sharing a single card's hardware more effectively in virtual machines.
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9 minutes ago

matt21572 said:

I have to install the catalyst drivers and the VMtools to get passthrough working, works great, UNTIL REBOOT


Hi Matt, have you found a solution to this problem? I am thinking about building a similar vmware rig based on an Extreme4 (which I already own, just need to buy a better CPU) and I'd like to know if it will work with vmware and GPU passthrough...
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