Hello,
I use Unity 6…25f HDRP in Windows 11 24H2 latest updates and today’s Nvidia driver latest version.
I created with Unity 6 a brand new empty HDRP project and as soon as I close the “HDRP setup wizard”, everytime I move the mouse it triggers a refresh of the HDR (probably disable and enable it), which causes my monitor to go black screen. Only if I stay still, HDR stays on and I can see something.
The only way to avoid this for me at the moment is to turn off HDR in Unity. I think, if not due to the Windows 11 update, it is a Unity 6 related bug, as I don’t have this problem anywhere else.
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I am currently facing the same issue using Unity 6…32f1 HDRP, using the latest Nvidia Driver for the 3080 and up to date Windows 10. The issue begins as soon as the Scene or Game view starts rendering something.
It seems as if Unity is constantly trying to enable/disable HDR output for the screen, an HDR capable Alienware AW3423DWF. HDR is disabled in Windows, aswell as in Unity (“Allow HDR Display Output” is turned off) and it doesnt look like the screen actually gets switched to HDR mode, as its menu is still reporting it to be in non-HDR mode.
If I enable HDR in the Win 10 settings menu, the black screen issue goes away; but it still doesnt look like Unity is actually using HDR in that moment, even with “Allow HDR Display Output” enabled for testing.
EDIT: I just disabled DX12 and forced Unity to use DX11, which also fixes the issue; likely because HDR output only works in DX12 according to the manual.