Tips for resetting Unity and Compiz settings in Ubuntu 14.04 (problems caused by taskbar vanishing CCSM settings)

Reset unity and Compiz in Ubuntu 14.04

Open Terminal (ctrl+alt+t) and use the following command to reset the Compiz:

dconf reset-f/org/compiz/

After resetting the Compiz, restart unity:

Setsid Unity

Also, if you want to reset the unity icon, try the following commands:

Unity--reset-icons

Possible Troubleshooting solutions:

If you are experiencing the following error while resetting Compiz:

Error:GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark.g2dfile2derror2dquark.Code17:Cannot Open dconf Database: Invalid GVDB header

The possible reason is that the user files have been messed up. Back up the dconf configuration and remove the configuration file:

MV ~/.config/dconf/~/.config/dconf.bak

Tips for resetting Unity and Compiz settings in Ubuntu 14.04 (problems caused by taskbar vanishing CCSM settings)