Got my new Pi 3B+ today, it's up and running on Ethernet + SSH but I'm having issues with the on-board WiFi.
From what I understand, prior to 'filling out' the wpa_supplicant.conf file, I can run an iwlist wlan0 scan command to get the network names nearby.
Well when I do, I see this -
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wlan0 Interface doesn't support scanning : Network is down
I'm running the 13/3/18 Raspbian Stretch Lite image freshly downloaded, but just to be sure I did an apt-get update and ...dist-upgrade as well.
ifup wlan0 reports this -
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ifup: unknown interface wlan0
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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether b8:27:eb:47:9d:22 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.22/24 brd 192.168.1.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::b9a9:3679:d8f3:54d6/64 scope link
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether b8:27:eb:12:c8:77 brd ff:ff:ff:ff:ff:ff
Thanks