Update documentation on Thumbnails generation
I use The best file manager 3.22.3 and under "Settings" have set up "Show Thumbnails for all files < 100MB".
When I connect Nokia Lumina, Canon PowerShot or Xiami 5s/LineageOS over USB, which I guess is all MTP, Nautilus does not show thumbnails of the pictures, a tree with sunset/sunrise as placeholder. When I copy the file to the local computer, using the same cable, Nautilus shows the thumbnail correctly.
So the question is, why over Nokia Lumina/LineageOS/Canon PowerShot/USB the thumbnails are not shown, copying the files to the hard disk, the thumbnails are shown? How can I debug this? What package shall I manually upgrade?
The path described at https://developer.gnome.org/integration-guide/stable/thumbnailer.html.en -> /desktop/gnome/thumbnailers is not shown by the dconf editor, I see only /desktop/gnome/crypto.
Under Windows the thumbnails are shown from the Nokia Lumina device.