Network manager indicator missing

I recently upgraded from 11.10 to 12.04. My first attempt failed, and I received an error stating that not all of the required packages were downloaded. Before (successfully) attempting again, I noticed that there was no longer a networking indicator in the upper panel. The indicator did not reappear with the installation of 12.04.

To be clear, my wireless connection has experienced no problems, despite the missing indicator.

Here are the solutions that I have found which did not work for me:

1. Editing /etc/NetworkManager/NetworkManager.conf and replacing [ifupdown] managed=false with =true.
2. Reinstalling network-manager (via apt-get install --reinstall).

I am currently running 12.04 on an Asus Eee PC 1005 HA, and I am new to seeking solutions through forums, so I apologize if I have neglected to provide some vital information about my hardware.

Solution 1:

Motivated by this post on Ubuntuforums.org, I have found a solution to my issue in two steps.

1. Purge and reinstall network-manager-gnome:

   sudo apt-get purge network-manager-gnome && sudo apt-get install network-manager-gnome
   

2. Add nm-applet to the Startup Applications (which may be found by entering "Startup Applications" in the Dash and setting the path to /usr/bin/nm-applet).

   I verified that the latter step was necessary, as the indicator did not appear after login without this addition of nm-applet to the Startup Applications.

Solution 2:

if everything else fails,use this

sudo apt-get install indicator-applet-complete

quick restart and you should see it on the panel again

Solution 3:

The only solution that worked for me was:

sudo apt install indicator-applet indicator-network

Source: https://ubuntuforums.org/showthread.php?t=2251198&page=2&p=13167056#post13167056