[Bug 1551171] [NEW] /usr/share/applications/mimeinfo.cache is used for default applications in Firefox

[Sergio Callegari]

Public bug reported:

See https://bugzilla.mozilla.org/show_bug.cgi?id=727422

With Firefox, default applications are selected by Firefox using
/usr/share/applications/mimeinfo.cache, however, this list is a system
generated list in random order and therefor does not reflect the user's
preferences of which application should be used to open a file.

When I click on a pdf (for example), I want to have the option to open
it in my default application, in my case in okular, and not in something
else. However, acroread is invariably presented is presented as default
choice because it happens to be the first entry in
/usr/share/applications/mimeinfo.cache for application/pdf.

This happens in spite of the fact that the desktop provides correct
defaults.list and mimeapps.list files

The comments in the firefox bug seem to suggest that firefox developers
are convinced that firefox calls the correct gtk libraries to determine
the correct application. If this is the case, then it is necessarily the
ubuntu (or possibly kubuntu) infrastructure to be failing.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: firefox 44.0.2+build1-0ubuntu0.15.10.1
ProcVersionSignature: Ubuntu 4.2.0-30.36-generic 4.2.8-ckt3
Uname: Linux 4.2.0-30-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
BuildID: 20160209234513
CurrentDesktop: KDE
Date: Mon Feb 29 11:37:25 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-12-12 (808 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
SourcePackage: firefox
UpgradeStatus: Upgraded to wily on 2015-10-23 (129 days ago)

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages wily

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Title:
  /usr/share/applications/mimeinfo.cache is used for default
  applications in Firefox

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