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[4.8] VR isn't working anymore on Oculus DK2

Hi everyone!

I've just updated my UE4 to 4.8 version and my vr project isn't working anymore :(

The VR preview is always disabled and when I tried to run the console command: "stereo on" in standalone game, it doesn't work. It worked on UE4 4.7.6 .

Can anyone help me please? Thank you very much!

Product Version: UE 4.8
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asked Jun 15 '15 at 06:07 PM in Bug Reports

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avatar image spyro Jun 15 '15 at 06:12 PM

Hi there,

Epic confirmed a bug regarding this today: https://answers.unrealengine.com/questions/240980/48-vr-preview-sometimes-doesnt-work.html

Hmm, but in your case it seems like it's not just not working but the button is disabled alltogether?

avatar image Keii Jun 15 '15 at 06:33 PM

Hi spyro! Thank you for answering me!

Yeah, the VR preview button is always disabled for me, I've already closed and reopened the project and nothing :( . It works on ue4 4.7.6

I'm using oculus sdk, and ue4 4.8. I tested with direct and extended mode.

alt text

Thank you very much!

avatar image Rudy Q ♦♦ STAFF Jun 15 '15 at 08:48 PM

Hello Keii,

If you update to the latest runtime does this allow you to click the VR preview?

avatar image Keii Jun 15 '15 at 09:58 PM

Hi Rudy! Thank you for answering me!

I've just updated the oculus runtime to 0.6. The button "VR Preview" now is enabled, but it doesn't work, it just shows a black screen on direct or extended mode. The audio works fine, but no image is showing in my Oculus Rift, as you see in the pictures below:

alt text

And after click "VR Preview button":

alt text

I can't even set "stereo on" by blueprint in standalone game. I run as Standalone game, and when I ran the console command "stereo on", it turned black, but the audio works...

alt text

After enter the "stereo on" command:

alt text

Thank you very much!

avatar image Keii Jun 15 '15 at 10:30 PM

Wow.. in fact it is unstable. I've just restart my computer and worked once, but the second time it just returned a white screen, and the third time a black screen. All of them the audio worked... Oo"

avatar image spyro Jun 15 '15 at 10:32 PM

Welcome to the funny world of VR development in 2015 ;)

avatar image ianmoran1970 Jun 16 '15 at 11:25 AM

I can report similar black screen for standalone with example project...

With a test project (third person example) with 4.8 and Oculus 0.6.0, I am able to repeatedly boot VR Preview seemingly fine, but I am unable to run stand alone without the black screen result when switching to VR with console 'stereo on', keyboard alt-enter, or blueprint EnableHMD where I see what looks like a single frame of the example which returns to a black screen as shown by Keii above.

avatar image spyro Jun 25 '15 at 04:04 PM

Hi there,

Epic didn't fix this yet. The only known workaround is to close all other windows and tabs before starting a VR preview (or standalone process).

See https://answers.unrealengine.com/questions/240980/48-vr-preview-sometimes-doesnt-work.html for details.

avatar image paoloverona Jun 16 '15 at 02:58 PM

I have another issue with Oculus: I've got a scene where my player starts turned 180° (looking backwards) on Z-axes so, when I start the preview the look is ok (when the Oculus visualization starts...most of the time not), but when I started again it's start turned 180° (looking forward) and alternating so every time that I restart the game. If I play in standard mode (no VR preview) every time the scene starts perfectly

avatar image spyro Jun 16 '15 at 03:16 PM

Hi, sounds like bug UE-11247, reported Mar 21 '15: https://answers.unrealengine.com/questions/197438/vr-player-start-viewing-direction-is-90-off.html (I posted a workaround there)

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Hello Keii,

I was able to reproduce this issue on our end. I have written up a report ( UE-17125) and I have submitted it to the developers for further consideration. I will provide updates with any pertinent information as it becomes available. Thank you for your time and information.

Make it a great day

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answered Jun 16 '15 at 03:00 PM

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Rudy Q ♦♦ STAFF
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avatar image Keii Jun 17 '15 at 04:37 PM

Thanks Rudy! :)

avatar image ianmoran1970 Jun 25 '15 at 03:45 PM

I can report the same black screen in standalone stereo under 4.8.1, can you confirm that UE-17125 covers this issue, and if possible can you give an eta on this being addressed please? Many thanks

avatar image melat3mg Jun 30 '15 at 06:47 PM

Same issue for me in 4.8.1...sticking with 4.7 for VR for now.

avatar image Rudy Q ♦♦ STAFF Jun 30 '15 at 06:59 PM

Hello melat3mg,

As Spyro posted above please note that you can run the VR preview in 4.8 if all windows are closed (excluding the main editor window). I hope that this information helps.

Make it a great day

avatar image bkahraman Jul 31 '15 at 07:10 AM

Hey Rudy, what is the state of this issue (UE-17125) ?

avatar image HuntaKiller Aug 02 '15 at 06:05 AM

yes I'd also like to know the state of the issue please Rudy. Seems like a high priority thing. I updated to 4.8 to take use of some updated c++ functions but can't test VR anymore.

avatar image Rudy Q ♦♦ STAFF Aug 03 '15 at 01:30 PM

Hello HuntaKiller,

I went ahead and double checked on this issue for you and it appears that this issue has been resolved internally. This solution will be available in a later release of the engine. Until then you could try launching VR mode with the VR preview with all other windows closed. I hope that this information helps.

Make it a great day

avatar image MaxSMoke777 Aug 03 '15 at 09:08 PM

When is the low-rez issue going to be addressed? Everytime I build out a 64-bit Windows package for VR (Oculus), and I jump into VR mode in the game, I get this TERRIBLE low-resolution mode. Executing console commands do nothing, it's like it's stuck at "HMD SP 60" and won't leave it for anything. I don't see this problem when I'm using the VR Preview (with all tabs closed). I only see it in the final, built package. My game's progress has ground to a standstill. It's ready for release, except for this singular problem.

avatar image spyro Aug 03 '15 at 11:27 PM

Just a blind shot in the dark, did you try 'hmd pd 1' or 'hmd reset'?

avatar image druidsbane Nov 03 '15 at 02:21 PM

For UE-17125 it looks like the solution in 4.10 is to simply disable VR Preview on the Standalone mode. Any chance that a proper fix will be forthcoming so we can launch Standalone and preview in the HMD?

avatar image Rudy Q ♦♦ STAFF Nov 03 '15 at 03:23 PM

Hello hesham,

Thanks for letting us know, I went ahead and reopened this issue and it has been sent to the developers for further consideration. I will provide updates with any pertinent information as it becomes available.

Make it a great day

avatar image Rudy Q ♦♦ STAFF Aug 04 '15 at 01:47 PM

Hello MaxSMoke777,

The issue that you are having different enough that I will need you to create a new thread for tracking purposes. If you could start a new thread and then post a link to the question in a reply I will be more than happy to assist you further. I have a few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions (for the new thread):

  1. Can you reproduce this issue in a clean project?

  2. If so, could you provide a detailed set of steps to reproduce this issue on our end?

  3. Could you provide screen shots of the issue/ any blueprints that may be involved?

Make it a great day

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