It might be a little late, but I ran into a similar problem where there was no icon displayed with nm-applet and razor-qt. I was able to solve it by installing the network-manager-applet-gtk2 from aur.https://aur.archlinux.org/packages/netw … plet-gtk2/This could indicate a problem with gtk3 perhaps?(btw.
Network and Xorg issues sounds to me like you did too much in one go.https://wiki.archlinux.org/index.php/Be … leshootingCheck the connection, check the driver status and load the module: https://wiki.archlinux.org/index.php/Ne … figurationIf the network interface doesn't show up (eth0), read this part: https://wiki.archlinux.org/index.php/Ne … Interfaces
So I take it you have verified 'network-manager-applet' has been installed properly (including dependencies)? I'm pretty sure KDE has it's own plasma applet, but for the others this package must be installed for the applet to work properly.