Network manager on laptop not finding networks: Slackware64-15.0

[Rich Shepard]

I've always used resource files and wicd on my laptops. I want to replace
this practice with the advanced network manager using xfce4-4.16.2 on
Slackware64-15.0 on my Lenovo T430.

I removed all configurations in /etc/rc.d/rc.inet1.conf and turned off the
execute bits for /etc/rc.d/rc.wireless; rc.networkmanager has no executable
bits but is loaded when the laptop is booted.

Using the panel(2) setup I installed the advanced network manager. However,
when I load it the display is blank: no ethernet LAN, no WiFi networks
including the local one.

What have I missed or done incorrectly?

TIA,

Rich