Comment 0 for bug 1426316

After activating firefox profile, be it in complain or enforce mode, no applet will run.

The culprit seems to be:
apparmor="DENIED" operation="open" profile="/usr/lib/firefox/firefox{,[^s][^h]}//browser_openjdk" name="/run/user/1000/dconf/user" pid=11973 comm=64636F6E6620776F726B6572 requested_mask="wrc" denied_mask="wrc" fsuid=1000 ouid=1000

The rules that prevent the applets to run belong to Apparmor abstractions, specifically /etc/apparmor.d/abstractions/ubuntu-browser.d/java

These rules will be enforced, even when usr.in.firefox is in complain mode (I don't know why exactly)

Adding write access to the line

owner /run/user/*/icedteaplugin-*/ rw

in /etc/apparmor.d/abstractions/ubuntu-browser.d/java

seems to solve the problem.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: apparmor-profiles 2.8.98-0ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-31.41-lowlatency 3.16.7-ckt5
Uname: Linux 3.16.0-31-lowlatency x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 27 11:05:20 2015
InstallationDate: Installed on 2014-12-13 (75 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
PackageArchitecture: all
ProcKernelCmdline: BOOT_IMAGE=/vmlinuz-3.16.0-31-lowlatency root=/dev/mapper/ubuntu--vg-lv--root ro threadirqs quiet splash vt.handoff=7
SourcePackage: apparmor
Syslog: Feb 27 09:42:45 franck-ThinkPad-T430s dbus[3940]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/DBus" interface="org.freedesktop.DBus" member="Hello" mask="send" name="org.freedesktop.DBus" pid=9748 profile="/usr/lib/firefox/firefox{,*[^s][^h]}//browser_openjdk" peer_profile="unconfined"
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.apparmor.d.usr.sbin.dnsmasq: [modified]
modified.conffile..etc.apparmor.d.usr.sbin.traceroute: [modified]
mtime.conffile..etc.apparmor.d.usr.sbin.dnsmasq: 2015-02-20T14:58:28.130461
mtime.conffile..etc.apparmor.d.usr.sbin.traceroute: 2015-02-20T15:04:02.437880