Hello. The file mimeinfo.list apparently overrides mimeinfo.cache which seems to be recreated upon installing/upgrading packages.
Creating the following file: [Default Applications] application/pdf=okularApplication_pdf.desktop as mimeinfo.list under ~/.local/share/applications/ or /usr/share/applications/ (as per user or global requirements) helped for me. Source: https://www.ryananddebi.com/2014/09/29/linux-fixing-pdfs- opening-in-gimp-in-firefoxzotero/ which refers to https://wiki.debian.org/MIME I confirm that this works for me on Kubuntu Bionic LTS with latest updates. -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to gimp in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs https://bugs.launchpad.net/bugs/574342 Title: GIMP set as default pdf viewer Status in gimp package in Ubuntu: Confirmed Bug description: Binary package hint: gimp After installing GIMP on Lucid, GIMP became the default application to open PDF files, instead of evince. While GIMP can open PDF files, this surely is not what most people want. Please fix this. May be related to debian bug #525077, but I am not sure. In any case, /usr/share/applications/mimeinfo.cache contains application/pdf=gimp.desktop;evince.desktop; To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/574342/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp

