Bug#1006523: Default settings for Cycles assume that denoise support is present.

[David Woolley <forums@david-woolley.me.uk>]

I just tried a clean install of Blender on Trixie, fully patched as of 
29th July, based on Trixie RC2, and a clean machine.  On switching from 
Eevee to Cycles, and trying to render, I got a message that Blender 
wasn't built with denoise support (which is consistent with the current 
issue), and it failed to render.  Once I unticked denoise, in the render 
settings (two places, although maybe only one was needed), it rendered 
the image properly.

Unless and until the current wishlist item is implemented, I believe the 
default should be with denoise off.

Unless there has been a change since yesterday, this will be 
4.3.2+dfsg-2, and the amd64 build.

(I think this is a minor bug, rather than a wish list item, so I might 
create a new report, for this.)