I am using darktable 2.6 on Ubuntu 18.04.
Noise profile for Nikon Z7 does not persist. When I open darktable, Denoise Profile will not list Nikon Z7, instead it says “generic”. Then I have to register the Noise profile using following command
darktable --noiseprofiles /pathTo/presets.json
After that Denoise Profile will list Nikon Z7. If I close and reopen darktable, Denoise Profile will get lost. I have to reregister the noise profile once more.
How can I persist the Noise profile?
Where should I copy the present.json?
Should I run registration as sudo?