resolved Can't run DCS in VR anymore (HP Reverb G2)

[Septi]

The issue probably happened with the last update (I recall VR working in DCS just fine 1-2 weeks ago). I can't get DCS to launch in VR at all anymore. If I try to launch MT Preview, it always launches flat-screen (the window appears to be sized for VR but doesn't show VR view, i.e., is flat and doesn't move with my head, see screenshot 1). I also tried adding --force_enable_VR and --force_OpenXR to the command line and using "Launch MT Preview in Steam VR mode" options, to no avail. If I launch it without MT Preview, but in Steam VR mode, it launches Steam VR, and the window shows proper VR view, but my headset doesn't show the view from the game (see screenshot 2).

OS Windows 10, headset HP Reverb G2, DCS openbeta Steam version

Can you help me please?

[kendoric2]

I was having the same issue , but for me opening it straight from steam and selecting the Steam VR multithread option works like a charm

[Moxica]

DCS OpenBeta is no more.

https://www.digitalcombatsimulator.com/en/news/2024-01-26/

Edited April 7, 2024 by Moxica

[silverdevil]

42 minutes ago, Septi said:

The issue probably happened with the last update (I recall VR working in DCS just fine 1-2 weeks ago). I can't get DCS to launch in VR at all anymore. If I try to launch MT Preview, it always launches flat-screen (the window appears to be sized for VR but doesn't show VR view, i.e., is flat and doesn't move with my head, see screenshot 1). I also tried adding --force_enable_VR and --force_OpenXR to the command line and using "Launch MT Preview in Steam VR mode" options, to no avail. If I launch it without MT Preview, but in Steam VR mode, it launches Steam VR, and the window shows proper VR view, but my headset doesn't show the view from the game (see screenshot 2).

OS Windows 10, headset HP Reverb G2, DCS openbeta Steam version

Can you help me please?

hello. please post dcs.log for analysis.

[Septi]

Fixed it. Appears there were two problems here:

1. OpenXR runtime was set to WMR. For some reason, because of this, MT Preview always started in the flat screen mode. Runtime can be reset to SteamVR from the SteamVR settings (accessible from the SteamVR status window). I'm actually not 100% sure this step was necessary, because after it, MT Preview still had the same problem it had for me: no picture rendered in the headset.
2. A second display was connected to a different GPU than my VR was. I'm using an HDMI dummy plug to fake having multiple displays when I'm working in VR. Pulling it out and only having one display connected to the same GPU VR was connected to solved the issue for me. Maybe wrong display and so wrong GPU was assigned to DCS somehow?

[silverdevil]

17 hours ago, Septi said:

Fixed it. Appears there were two problems here:

1. OpenXR runtime was set to WMR. For some reason, because of this, MT Preview always started in the flat screen mode. Runtime can be reset to SteamVR from the SteamVR settings (accessible from the SteamVR status window). I'm actually not 100% sure this step was necessary, because after it, MT Preview still had the same problem it had for me: no picture rendered in the headset.
2. A second display was connected to a different GPU than my VR was. I'm using an HDMI dummy plug to fake having multiple displays when I'm working in VR. Pulling it out and only having one display connected to the same GPU VR was connected to solved the issue for me. Maybe wrong display and so wrong GPU was assigned to DCS somehow?

good to hear. you should mark your post as solution. perhaps it will help another user.