Reddit reviews HDMI Dummy Plug,Headless Ghost, Display Emulator （Fit Headless-1920x1080 New Generation@60Hz）

Get one of these and unplug that monitor: https://smile.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF/ref=sr_1_4?keywords=dummy+hdmi&qid=1551054558&s=gateway&sr=8-4

My experience was that neither Chrome Remote Desktop nor Parsec functioned properly without a physical display connected. I ended up using this dummy adapter and everything has been great: https://www.amazon.com/gp/product/B06XT1Z9TF . I see it's out of stock now, but my impression is there are a hundred equivalent ones.

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Parsec has some very brief documentation about this: https://support.parsecgaming.com/hc/en-us/articles/115002683491-Running-Parsec-On-A-Headless-Gaming-PC-Or-A-Server

HDMI Dummy Plug,Headless Ghost, Display Emulator （Fit Headless-1920x1080 New Generation@60Hz） https://www.amazon.com/dp/B06XT1Z9TF/ref=cm_sw_r_cp_api_i_.E2SDb1AWSY5W

Something like this would work

Get a HDMI dummy plug. The PC will think it has a monitor attached. https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF/ref=sr_1_3?keywords=hdmi+plug&qid=1559057698&s=gateway&sr=8-3

You need an HDMI dummy plug. Something like this.

Get a dummy dongle. Like this: https://www.amazon.com/dp/B06XT1Z9TF?ref=yo_pop_ma_swf

Good tip! You're correct that you either need an active real display or some sort of virtual display for Parsec to work. If you can't leave a computer monitor turned on all the time, then you can use a headless HDMI Adapter to simulate an active screen. Something like this: https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF/ref=sr_1_3?keywords=headless+hdmi&qid=1549937600&s=gateway&sr=8-3

Yep, restart fixed it. So keep in mind that if you are hot-swapping monitors, you may have some troubles with Oculus's ability to split out windows into virtual monitors. Otherwise, it works like a charm. Also note, that for my test I didn't use a "real" monitor, just a dummy plug, but it should work the same with a real monitor. I bought 3 of those dummy plugs when that was the only way to get VR multimonitor support but now that I can pull windows into their own virtual monitors I don't use them very much.

> Btw, thanks for the effort dude

It was very little effort, but I am glad it helped. It's amazing how quickly some people will just say something "doesn't work."

This is simultaneous a good idea and stupid as all hell.

Multiple virtual monitors in a cafe (or even home) setting? Awesome, sign me up!

Wearing a VR headset covering your entire vision in such a setting? Stupid, hipster-y (cyberpunk-ish?) bullshit that's as cringey as the MIT Cyborgs.

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If you put this into a discrete, elegant glasses like form factor (as an AR overlay) then you've got serious future tech that seamlessly expands computing. Anything else will be abandoned.

Of course, you can basically do this right now with Virtual Desktop VR. Just use a Dummy Plug adaptor to an HDMI or DisplayPort to register it as a virtual monitor. Instant multi monitor VR workspace where ever you go.

Yes you absolutely can but you will need the following:

https://www.amazon.com/gp/product/B06XT1Z9TF/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

The headset will not work without a monitor so a ghost display is the best/fastest solution. If you only have one hdmi port then you will need a displayport to hdmi adapter.


I recommend changing your password to a pin so its easier to log in.
After you are done putting the pin put the headset on and wait for it to turn on. The use your PC with the desktop app ion the cliff house.

Ill have to get back to you on the exact models - but NVIDIA is a world of pain. Its not worth it. I was initially trying to passthrough a 5xx card (560 I think?). If I used x-vga=off to get VNC working, windows would boot and show the card, but it would always have an error because NVIDIA would detect the passthrough. With x-vga=on I couldn't post and it would sometimes crash the host.

I tried an older AMD/ATI card (I think it was a Radeon HD 4580). That one worked like a charm (mostly). It was as simple as powering it up, settings x-vga=on, configuring the passthrough, install drivers and it just worked. It was not very stable though, it did crash the host once or twice and performance was pretty meh (though thats probably because it was an old card + low single thread CPU perf).

Ultimately I ditched the passthrough idea and dream of virtualizing my gaming machine and built a dedicated gaming machine simply because of how unstable it all was.

My advice is get a cheap AMD card to make sure it works and assess how stable it is. It was a fun project, just not as useful as I hoped.
Also, if you plan to use VNC or game streaming, you are going to need a ghost monitor plug to get any useful resolution. I used this one

May need an HDMI dummy plug

Easiest option is a dummy plug, e.g. one of these.

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1 ) How i should connect it? Like 2 monitors to 1 host GPU? Or 1 monitor/1 gpu?

1a) This depends on your setup. If you want to use LG you will need a physical monitor or dummy HDMI adapter plugged into the 2060. So you may want to go 1 Monitor per Card. However, if a monitor has multiple inputs, you could have one of the monitors plugged into both cards and either switch between inputs or use looking class.

2) Will i be able to use my second monitor on host somehow? For example if i connect it to both GPU's, then i will use it on guest, and after that when i dont need it on guest i just reconnect it to host, somehow?

2a) The first answer sort of already solved this. You can use DDC ( https://passthroughpo.st/switching-monitor-inputs-software-ddc/ ) and pair it with evdev ( https://passthroughpo.st/using-evdev-passthrough-seamless-vm-input/ ). That way, you can have one or maybe both monitors plugged into both machines and switch quickly without having to buy a KVM switch. Although KVM switches are nice, the problem with gaming is most of them don't support high rez and/or high refresh rate.

3) Is it possible to just use it in a window or smth? I heard looking glass can do it, or its still require a working monitor connected to gpu to do it?

3a) Again, you can use your monitor's second input to keep a monitor plugged in, but if you go entirely LG or don't/cannot use the second input, you can buy an HDMI dummy plug: ( https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-Generation/dp/B06XT1Z9TF ). They are cheap and straightforward. Also, don't worry about the low refresh rate. The refresh rate of the VM doesn't matter if you are using LG and LG syncs with the monitor the Linux machine is connected, too, and the refresh rate that that connection supports.

4) What is the best option for my setup in that cases? I actually like that idea with VM just as a window, but idk is it possible.

4a) It is possible. Getting 4k at 300FPS is the hard limit that high-end hardware could produce with LG in theory. So if you say gaming a 1080p at 144hz then you should good to go. The capture API DXGI is your bottleneck, and you will have to deal with tweaking that. And I guess that is the only problem. Setting up a completely headless Windows gaming VM with LG requires an extra step and more tweaking in an already complex an unusual setup. If that is your thing, then all the power to you! I for one run LG on 3440x1440@100hz just fine.

In this setup the desktop is probably rendered on the GPU (depends on which device is seen by Windows as the "primary" one), then the QXL output is treated as a secondary display that's just cloned to. Just enable the virtual video output in QEMU (-vga qxl) or libvirt (in virt-manager, add a new device to your VM -> Video -> Model: QXL) and configure your displays properly (GeForce output as primary, QXL as secondary, clone displays), that's it.

The problem is, GeForces will not start if there's no output attached to the GPU (driver will simply not start at all - it's totally not that they want you ^to ^^buy ^^^Quadros... ). You'll have to attach any output to the passed GPU if you want to use it - it may also be a "dummy" output, like one of those (disclaimer: haven't used personally, but have seen those in action quite successfully), or you may just use a separate cable and connect it to your monitor, then never switch to that output at all.

Might need something like one of these to convince the video card it has a display connected and needs to be awake?

You need to get a headless dongle https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF/ to emulate the 1080p display to output for your steam link.

You could probably use a dummy plug to deal with this problem if your gpu has multiple outputs.

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I use this one for a headless setup. It works well.

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You'd probably need to tell parsec to use that output in particular.

HDMI dummy plug,Headless Ghost, Display Emulator （Fit Headless-1920x1080 New generation@60Hz） https://www.amazon.com/dp/B06XT1Z9TF/ref=cm_sw_r_cp_apa_jFC1BbB8B08HW

It's silly that this is still a thing. I heard of a way to set up a fake screen with an adapter. Maybe that would work if you set it to an even lower resolution. https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF

Get one of these: https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF and access the computer remotely. disable and enable each vegas on device manager, set gpu and mem clocks, and run miner.

A dummy hdmi plug solves point #2.

How are your monitors connected? Several people reported the same issue and it was due to a monitor going to sleep or something. Many folks, myself included have connected a dummy ghost plug to the vega, then disable all screensavers, power saving etc. I even had this issue when I turned off the monitor that was connected to the igpu, so now I just leave it unhooked and use screenconnect to remote into that system.

https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF/ref=sr_1_3?ie=UTF8&qid=1510834834&sr=8-3&keywords=hdmi+dummy+plug

Hey Guys I have been able to verify the same no OC condition with OverdrivenTool.exe that you have with an RX570 in the zero slot. I can not over clock it and the hash rate is typically 150 Hash less on Monero7 algo. Here is what worked for me. https://www.amazon.com/gp/product/B06XT1Z9TF/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1 I bought this little GEM and now when I have this condition if I plug this monitor load into the card it will ramp up to the expected Hash rate for the OC settings used on the card. I am not sure if this is a MB bios issue or an AMD driver issue but I can confirm after multiple test runs that the video load on the this card enables it to be OC with OverdriveNTool.exe. Let me know if this works for you.

I had the same issue. Turns out the problem was that the (GTX 1070) GPU doesn't see the Odyssey headset as a connected monitor - when you close the lid the GPU sees no monitors connected so it powers down. Since the design of the laptop predates WMR, you can't really blame Acer. The fix is to connect an HDMI dummy plug like they user for bitcoin mining rigs (https://smile.amazon.com/gp/product/B06XT1Z9TF/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1) This tricks the GPU into thinking there's a monitor connected and it stays powered. Since my laptop only has one HDMI port which the headset is using, I connected the dummy plug via an HDMI to Display Port adopter (the laptop has one of these too). Works like a charm for me!

Sure, basically Steam allows for moving the mouse back and forth between the main display and the extended desktop on one client display. All you need is a second display, either real, a dummy adapter (e.g. https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF) or a virtual (-> spacedesk). Once Windows shows the display, you can use Steam streaming to connect to the machine and scroll over to the second display even if only one monitor is attached to the client. Or you can configure Parsec (which doesn't support seamless switching) to stream only from the second display.

If you leave it at that, you'll run into input issues rather sooner than later as it's the same user / account. A few games can be played with a controller while somebody else works on the 2nd display, but it's a rather clunky way to handle this. You mentioned wanting to use two accounts at the same time and that's a much more elegant solution -

This is possible with Aster. It lets you assign a monitor and input devices to a another user on the same machine. Once at least a display is assigned to the second workspace, you can activate the Aster driver and, after a reboot, start up the other user account from the Aster control panel. I recommend either a real monitor or spacedesk (you can use its HTML5 web app from the same PC to display and control the 2nd workspace in the browser). You can then start Steam on the second workspace and configure it to auto start. Activate Steam streaming on a client device (supports the Steam Link HW, the Android and RPi app at the moment) and the dummy adapter or spacedesk will do the job just fine from here on out.

Notes:

• If you would like to use Steam on both accounts, download Sandboxie (https://www.sandboxie.com/) and follow the tutorial over at https://steamcommunity.com/sharedfiles/filedetails/?id=775253066 (ignore the input related sections). You can however only stream from one instance at the same time, namely the one that was started first. Also, streaming is user account bound, so you cannot switch between accounts on the fly on the same machine (it will show the connection as active, but never connect).
  
  
• Once started, Steam will be able to continue streaming from the second display / workspace even if spacedesk is disabled. However, you may get error messages when trying to start any games or 3D apps and streaming may fail with a black screen when transitioning between 3D and 2D. You can keep spacedesk running all the time by auto-refreshing the tab every X minutes or just make sure to refresh it manually before a transition.

Thanks. I'll need AnyDesk then as I require the GUI often.

This is what I got for my monitor solution:
https://www.amazon.ca/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF?ref_=mw_olp_product_details

When I first set everything up I did what you did but now my server box isn't located where my desktop is, hence this solution.

A dummy monitor plug maybe?

https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-Generation/dp/B06XT1Z9TF

A dummy plug like this should work for you.

HDMI dummy plug,Headless Ghost, Display Emulator （Fit Headless-1920x1080 New generation@60Hz）

plug this in your onboard graphics.

Computers can act weird if not connected to a monitor. I had a similar situation as you. Sometimes it was fine and sometimes it didnt want to boot. I bought a “headless” plug and never looked back. It fools your system into thinking a monitor is plugged in.

https://www.amazon.com/dp/B06XT1Z9TF/ref=cm_sw_r_cp_api_t7TMAb17XS6CZ

yep so that's what I did. I was able to address it by plugging a monitor into the onboard graphics. However just plugging in an HDMI cable wasn't enough. I had to have it attached to something (even though this monitor literally doesn't have a power cable attached).

I think im going to buyu something like this to address the issue permanently. Just seems silly to spend $10 on something so trivial.

I guess the computer uses one of my graphics cards to handle remote desktop and that's what's utilizing the card?

Huh. I am guessing Apple will tell you it's an issue with the graphics system on your logic board, unfortunately (but again, hard to tell without the unit on hand and access to Apple's in-house diagnostics).

One potential cheap interim solution if everything else is working fine is to get something like an HDMI dummy adapter - ex: https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF to trick the laptop into thinking it's connected to an external display when it's not so you at least have some portability. Note that by default this may prevent the computer from going to sleep when the lid is closed (not too hard to work around).

What's your CPU? the iGPU may work fine for your needs. There are HDMI dummy plugs that help get the iGPU fired up for VNC purposes. I used something like this with my headless hackintosh server: https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-Generation/dp/B06XT1Z9TF/ref=sr_1_3?keywords=headless+hdmi&qid=1572897501&sr=8-3

Yeah, I found a few people suggesting that it VNC wouldn't work properly if there was no monitor connected to the rig. So a dummy plug just fools the mobo into thinking a monitor is connected. No idea if it was actually required, but I got one anyway. If you're going to keep a monitor plugged in, then don't sweat it.

https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-Generation/dp/B06XT1Z9TF/

Honestly, pick up one of these: https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF

I run these in my gaming machine, which I only use for steam in home streaming, for the same reason. It's awesome.

https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF

If you want to use the eGPU with the internal display, you're going to want to get a headless HDMI adapter so the eGPU has a source to emulate to.

HDMI dummy plug,Headless Ghost, Display Emulator （Fit Headless-1920x1080 New generation@60Hz） https://www.amazon.com/dp/B06XT1Z9TF/ref=cm_sw_r_cp_api_27xLBb82MXNE6

https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-Generation/dp/B06XT1Z9TF

Like that.

It boots fine into Mixed reality portal if you set it up to start, and remove the need for login. But you also need a headless adapter for you GPU so it thinks there is a monitor attached. Like this one from amazon: https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-generation/dp/B06XT1Z9TF/ref=sr_1_3?ie=UTF8&qid=1523461599&sr=8-3&keywords=headless+hdmi There are other versions too, and for DP etc, if you need that. They all remove the need for a real monitor tho. If you need to control it later, you can setup tightvnc for it, and use any other pc to control your kb/mouse/monitor-less VR-pc.