Wireless network icon suddenly missing from wingpanel. Cannot find option in
dconf-editor to enable network icon.
but there was no change.
How can I get the network icon back in wingpanel?
The fix was to reinstall
libappindicator and reboot.
Here's the link to the answer: https://askubuntu.com/a/586319/203856
Since the problem persists even on another new account it doesn't like it's a problem with an auto-start or visibility, it's something global, which I would bet on a package corruption...
I wrote a general troubleshooting post, just in case anyone else stumbles upon it with a slightly different problem. However, please follow all the steps to make sure. if it doesn't help - post us with results from each step.
First of all, lets check if nm-applet is in place in your system and it can be actually launched.
check if nm-applet is in-place:
# ps aux | grep nm-applet
if it's in place it's only a problem of visibility, check step 4. If it's missing - check step 2.
check binary and package presence:
# ls -la `which nm-applet` # dpkg -V network-manager-gnome
If it's missing or any problems with package - reinstall
network-manager-gnome package. If everything is ok - move on to the next step.
If everything is in place - try to start it manually by running following command:
If it keeps running and does not exit, and icon appears - it means its an auto startup problem. go to step 5
If it keeps running without icon appearing - move on to the next step.
If it exits right away - troubleshoot the exit errors. You can even try to strace as binary doesn't have many debug options:
# strace -vtfs1024 -o /tmp/nm-applet-startup.strace.log nm-applet
If you've reached this place - it means your nm-applet can start just fine but you don't see the icon. probably issue is the visibility. Check it by calling gsettings:
# gsettings get org.gnome.nm-applet show-applet
if it returns false - bingo. That's the problem. Now call gsettings again to enable its visibility:
# gsettings set org.gnome.nm-applet show-applet true
If you've reached this place it probably means your nm-applet works fine but does not start automatically. we can fix that
Open settings, locate Applications and Startup. Add "nm-applet" over there. I know in luna it can be different a bit but you've got to figure it out, I don't have Luna :) Should look somehow like on a screenshot below
Had exactly same issue on Elementary OS Freya. This worked for me:
sudo apt-get install indicator-applet sudo apt-get install indicator-application
Originally found on google+ forum