I saw a similar problem in 16.04 with PDFs being opened with ImageMagick. Trying to open With Document Viewer and set that as the default made no change. I saw in mimeapps.list that there was both an image/pdf and an applications/pdf entry. I removed the image/pdf entry that pointed to ImageMagick, and left the very last entry in the file, which was the applications/pdf entry with Evince.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1280794 Title: Can't change default "Open with" application To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1280794/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs