I worked around this bug by adding a .desktop file for xdg-open and then setting it to be the default handler for unknown binary (application /octet-stream) files. It appears as "Let Ubuntu choose" in Firefox for opening files. I haven't had any problems since.
1. Put the below lines into a new file /usr/share/applications/xdg-open.desktop (using sudo) [Desktop Entry] Name=Let Ubuntu choose Exec=/usr/bin/xdg-open Terminal=false Type=Application NoDisplay=true 2. Edit .local/share/applications/mimeapps.list and replace this line: application/octet-stream=gedit.desktop; ...with this: application/octet-stream=xdg-open.desktop; -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/918019 Title: Firefox does not use default application to open binary files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/918019/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
