networking - Network indicator missing but connected (16.04 LTS Unity) - Ask Ubuntu

after recent upgrade seems have removed network-manager-gnome, or did upgrade -f did it, not see network indicator in panel. network active, both wireless , local.

i have tried:

1. nm-applet, it's not installed. if try install installing network-manager-gnome receive:

   the following packages have unmet dependencies:  network-manager-gnome : depends: default-dbus-session-bus not installable or dbus-session-bus not installable                         recommends: mobile-broadband-provider-info not going installed e: unable correct problems, have held broken packages. 

2. restarting service sudo service network-manager restart restarts make work again, again, no indicator.

edit (requested outputs):

• output of cat nm-applet:

  [desktop entry] name=network comment=manage network connections icon=nm-device-wireless exec=nm-applet terminal=false type=application nodisplay=true notshowin=kde;gnome; x-gnome-bugzilla-bugzilla=gnome x-gnome-bugzilla-product=networkmanager x-gnome-bugzilla-component=nm-applet x-gnome-usesnotifications=true x-ubuntu-gettext-domain=nm-applet 

• locate nm-applet indicates:

  gaj@gaj-lenovo-z51-70:~$ locate nm-applet /etc/xdg/autostart/nm-applet.desktop /usr/share/app-install/desktop/network-manager-gnome:nm-applet.desktop /usr/share/locale-langpack/en_au/lc_messages/nm-applet.mo /usr/share/locale-langpack/en_ca/lc_messages/nm-applet.mo /usr/share/locale-langpack/en_gb/lc_messages/nm-applet.mo /usr/share/locale-langpack/hr/lc_messages/nm-applet.mo 

• if try install network-manager-gnome using using aptitude get:

  the following new packages installed:   network-manager-gnome{b}  0 packages upgraded, 1 newly installed, 0 remove , 0 not upgraded. need 910 kb of archives. after unpacking 6049 kb used. following packages have unmet dependencies:  network-manager-gnome : depends: default-dbus-session-bus virtual package , not provided available package.  or                                   dbus-session-bus virtual package , not provided available package.  following actions resolve these dependencies:       keep following packages @ current version: 1)     network-manager-gnome [not installed]                  accept solution? [y/n/q/?] y 

  outputs:

  starting pkgproblemresolver broken count: 1 starting 2 pkgproblemresolver broken count: 1 investigating (0) network-manager-gnome [ amd64 ] < none -> 1.2.4-0ubuntu2~ubuntu16.04.1~ppa1 > ( gnome ) broken network-manager-gnome:amd64 depends on default-dbus-session-bus [ amd64 ] < none > ( none ) broken network-manager-gnome:amd64 depends on dbus-session-bus [ amd64 ] < none > ( none ) done packages not installed. may mean have requested impossible situation or if using unstable distribution required packages have not yet been created or been moved out of incoming. following information may resolve situation:  following packages have unmet dependencies:  network-manager-gnome : depends: default-dbus-session-bus not installable or                                   dbus-session-bus not installable e: unable correct problems, have held broken packages. 

your locate command indicates missing great deal of content usr/share/nm-applet/ directory. content missing can found in network-manager-gnome_1.1.93-1ubuntu1_amd64.deb package can found here. if unable install normal means dpkg has big hammer situations such , issuing command sudo dpkg -i --force-downgrade network-manager-gnome_1.1.93-1ubuntu1_amd64.deb

if have current backup bigger hammer can use --force-depends or --force-all switches

i'm not kidding backup. more information available regarding dpkg force options command: dpkg --force-help have replicated below convenience

dpkg forcing options - control behaviour when problems found:   warn continue:  --force-<thing>,<thing>,...   stop error:    --refuse-<thing>,<thing>,... | --no-force-<thing>,...  forcing things:   [!]                set force options   [*] downgrade          replace package lower version       configure-any      configure package may 1       hold               process incidental packages when on hold       not-root           try (de)install things when not root       bad-path           path missing important programs, problems       bad-verify         install package if fails authenticity check       bad-version        process packages wrong versions       overwrite          overwrite file 1 package       overwrite-diverted overwrite diverted file undiverted version   [!] overwrite-dir      overwrite 1 package's directory another's file   [!] unsafe-io          not perform safe i/o operations when unpacking   [!] confnew            use new config files, don't prompt   [!] confold            use old config files, don't prompt   [!] confdef            use default option new config files if 1                          available, don't prompt. if no default can found,                          prompted unless 1 of confold or                          confnew options given   [!] confmiss           install missing config files   [!] confask            offer replace config files no new versions   [!] architecture       process packages wrong or no architecture   [!] breaks             install if break package   [!] conflicts          allow installation of conflicting packages   [!] depends            turn dependency problems warnings   [!] depends-version    turn dependency version problems warnings   [!] remove-reinstreq   remove packages require installation   [!] remove-essential   remove essential package  warning - use of options marked [!] can damage installation. forcing options marked [*] enabled default. 

it appears obtained version have installed ppa:vascofalves/gnome-backports recommend remove ppa sources.list it's stated in description

ppa description  backports of gnome packages. personal use. don't expect here work properly. 

sources:

http://packages.ubuntu.com/xenial/amd64/network-manager-gnome/download

how can ppas removed?

https://launchpad.net/~vascofalves/+archive/ubuntu/gnome-backports