Viewport become suddenly gray

[elvgz]

These days I am doing a bit of testing with Octane and Blender. I use the latest versions of the Prime tier from here https://render.otoy.com/shop/prime.php, with latest Nvidia Driver.
On many occasions, doing absolutely nothing abnormal, for example today simply resizing the viewport, or yesterday just clicking on the area where the nodes were, the main viewport suddenly turns grey. Even closing and reopening everything, or restarting the render does not change anything. Yesterday, for example, I solved it by cutting and pasting again the nodes I had made, and everything suddenly became normal again. I attach a screenshot.
How can I avoid this? Thank you

[elvgz]

I'm the only one with this problem?

[linograndiotoy]

Hi!
Do you have a simple scene and steps to reproduce the issue?

[elvgz]

Hi!
Do you have a simple scene and steps to reproduce the issue?

Not steps, because happens completely in a randomic way, but I will provide you an example scene as soon as it happens to me again

[elvgz]

Ok, happens now. Gray viewport and "Waiting for image"
Only with this file, If I start over or change file, everything works flawless.
I've attached the file
Thank you

[linograndiotoy]

What you're seeing is perfectly normal.

You currently have the Denoiser Beauty pass selected in the Preview Pass, but the Denoiser is not enabled, so that pass doesn't actually exist in the render.
To fix this, either:

Select the regular Beauty pass (non-denoised), or

Enable the Denoiser to make the Denoised Beauty pass available.

Hope this helps!

[elvgz]

What you're seeing is perfectly normal.

You currently have the Denoiser Beauty pass selected in the Preview Pass, but the Denoiser is not enabled, so that pass doesn't actually exist in the render.
To fix this, either:

Select the regular Beauty pass (non-denoised), or

Enable the Denoiser to make the Denoised Beauty pass available.

Hope this helps!

Screenshot 2025-06-18 102932.jpg

I've tested and is this!
well, I feel pretty stupid, definitely a shortcoming of mine that I could have very well avoided!
Thanks for the help!

[linograndiotoy]

It's ok! We learn new things every day!