gdk-pixbuf-thumbnailer fails to create thumbnails for CR2 100% of the time.

[Kristijan Žic ]

I have been adding "image/x-xpixmap;image/x-canon-cr2;image/x-adobe-dng" to the end of the line starting with "MimeType=" in the file "/usr/share/thumbnailers/gdk-pixbuf-thumbnailer.thumbnailer" since Ubuntu 18.10 for the thumbnailer to create the thumbnails primarily for the ".CR2" raw files from my Canon 77D and 80D cameras.

Unfortunately I have to report that as of Ubuntu 19.10 this solution doesn’t work on my machine anymore.
The thumbnailer tries to create the thumbnails but fails and instead creates 1 pixel png images that it all puts in "~/.cache/thumbnails/fail/gnome-thumbnail-factory".

Is there any solution? Should I test something?

I've attached a CR2 photo of mine that anyone can use for testing.

I've also created a bug report on gnome gitlab here:
https://gitlab.gnome.org/GNOME/gdk-pixbuf/issues/144

[Sebastien Bacher (seb128)]

Thank you for your bug report, looks like you reported it upstream to the wrong place though as it's a gdk-pixbuf issue rather than a gnome-desktop one

[Kristijan Žic  (kristijan-zic)]

Edited the original report to link to a new issue upstream:
https://gitlab.gnome.org/GNOME/gdk-pixbuf/issues/144

[Sebastien Bacher (seb128)]

Upstream considers the issue to be invalid