I experimented with some custom Gnome PPAs (ppa:gnome3-team/gnome3 and ppa:gnome3-team/gnome3-staging) and newer versions of lightdm through which I had hoped to fix a problem with a blank screen on resume from suspend. Although not completely sure, this might have caused the problem I am facing now.
I am no longer able to run elementary software such as:
The Software Updater (doesn't prompt me with the root password dialog prompt anymore):
The Network Manager:
What would you recommend me to do?
- I have been thinking about a fresh installation but I don't have a separate /home partition. Thus I would loose my private data. Moreover, I would loose my network manager connection and all custom modifications done in /etc
- I already purged the Gnome3 PPAs and reverted the packages but the problem still persists
- I had been looking into possibilities of resetting / re-installing all default elementary OS packages but couldn't find a way of doing so.