May 012019
 
VMware Horizon View Logo

One really cool feature that was released in VMware Horizon View 7.7, was the ability to install the Horizon Agent on to a Physical PC or Physical Workstation and use the Blast Extreme protocol. It even supports 3D Acceleration via a GPU!

As a system admin, I see value in having some Physical PCs managed by the View connection server.

I’ll be detailing some information about doing this, what’s required, what works, and what doesn’t below…

From the “What’s new in Horizon 7.7” doc at https://blogs.vmware.com/euc/2018/12/whats-new-horizon-7-7.html

You can now use the Blast Extreme display protocol to access physical PCs and workstations. Some limitations apply.

Additional information from the “Horizon 7.7 Release Notes” at https://docs.vmware.com/en/VMware-Horizon-7/7.7/rn/horizon-77-view-release-notes.html

Physical PCs and workstations with Windows 10 1803 Enterprise or higher can be brokered through Horizon 7 via Blast Extreme protocol.

Requirements

So here’s what’s required to get going:

  • Windows 10 Enterprise (Enterprise license is a must)
  • Physical PC or Workstation
  • VMware Horizon Licensing
  • VMware Horizon 7.7 Connection Server
  • VMware Horizon 7.7 Agent on Physical PC/Workstation
  • Manual Desktop Pool (Manual is required for Physical PCs to be added)

What Works

  • Blast Extreme
  • 3D Acceleration (via GPU with drivers)
  • 3D Acceleration with Consumer GPUs
  • Multiple Displays
  • Multiple GPUs

What Doesn’t Work

  • GPU Hardware h.264 encoding on consumer GPUs (h.264 encoding is still handled by the CPU)

Thoughts

I’ve been really enjoying this feature. Not only have I moved my desktop in to my server room and started remoting in using Blast, but I can think of many use cases for this (machines shops, sharing software licenses, etc.).

I’ve had numerous discussions with customers of mine who also say they see tremendous value in this after I brought it to their attention. I’ll update this post later on once I hear back about how some of my customers have deployed it.

3D Acceleration

One thing that is really cool, is the fact that 3D acceleration is enabled and working if the computer has a GPU installed (along with drivers). And no, you don’t need a fancy enterprise GPU. In my setup I’m running a GeForce 550 GTX TI, and a GeForce 640.

Horizon 3D Acceleration dxdiag
Horizon 3D Acceleration Enabled via dxdiag

While 3D acceleration is working, I have to note that the h.264 encoding for the Blast Extreme session is still being handled by the CPU. So while you are getting some great 3D accelerated graphics, depending on your CPU and screen resolution, you may be noticing some choppiness. If you have a higher end CPU, you should be able to get some pretty high resolutions. I’m currently running 2 displays at 1920×1080 on an extremely old Core 2 Quad processor.

H.264 encoding

I spent some time trying to enable the hardware h.264 encoder on the GPUs. Even when using the “NvFBCEnable.exe” (located in C:\Program Files\VMware\VMware Blast\) application to enable hardware encoding, I still notice that the encoding is being done on the CPU. I’m REALLY hoping they change this in future releases.

Hacks?

Another concept that this opens the door for is consumer GPUs providing 3D acceleration without all the driver issues. Technically you could use the CPU settings (to hide the fact the VM is being virtualized), and then install the Horizon Agent as a physical PC (even though it’s being virtualized). This should allow you to use the GPU that you’re passing through, but you still won’t get h.264 encoding on the GPU. This should stop the pesky black screen issue that’s normally seen when using this work around.

Bugs

Also, on a final note… I did find a bug where if any of the physical PCs are powered down or unavailable on the network, any logins from users entitled to that pool will time out and not work. When this issue occurs, a WoL packet is sent to the desktop during login, and the login will freeze until the physical PC becomes available. This occurs during the login phase, and will happen even if you don’t plan on using that pool. More information can be found here:
https://www.stephenwagner.com/2019/03/19/vmware-horizon-view-stuck-authenticating-logging-in/

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