How to change default window manager (GNOME -> IceWM) ?

[dr_toggleswitch]

I installed IceWM,  but when I boot Armbian GNOME Desktop,  it still signs into GNOME automatically. 

 

What do I have to do to instead sign into IceWM automatically instead of GNOME?

 

I didn't see this kind of option in armbian-config.

[eselarm]

This isn't something specific Armbian, so I even would say it is good that armbian contributors don't waste time on it to have it in armbian-config. You just type:

'How to change default window manager'

in your favorite search engine and then pick what is listed for Ubuntu or Debian.