Switching from MATE to LXDE with the new Debian 9 upgrade requires some extra work, especially if you are using a bcm43xx network interface controller. One such issue may be requiring root access to enable the network switch.
With major updates to root access security in the newest release of Debian, I found it difficult to use WICD so much so that I changed my nic interface to Network Manager and used Gnome’s applet as a GUI. The Debian packages are
network-manager && network-manager-gnome.
Before installing Network Manager, it is best to remove wicd first.
First go to LXDE Services and disable wicd. This is done by pressing the launch button. Look under Preferences and click Services.
Scroll to the button and uncheck wicd.
Remove wicd with the following.
apt-get remove wicd wicd-gtk
This command removes the application from your system and dash.
Next restart your computer.
After restarting, you can check to see if wicd is still autostarting. If it does not, you are ready to install Network Manager.
Add the following to your system.
apt-get install network-manager network-manager-gnome
Go to your configuration file.
If wireless must be enabled, use the
rfkill unblock 1
You should now have Wi-Fi access to your computer.