can't connect to wifi over wpa_supplicant

[thor314]

I'm going slightly insane.
I set up two pi's today, thought I did them precisely the same. The second can't connect to wifi though.
I was following this https://wiki.archlinux.org/index.php/Wpa_supplicant
- I copied the ctrl_interface and update_config lines
- I entered the ssid and psk for my network correctly
- I can see my network enabled
- dhcpcd is enabled/started
- I visibly have an ip address visible under wlan0
- I get IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

but when I enter
pacman -Syu
nothing loads. What the heck? What am I missing?

[summers]

Has resolv started? Can you look up names?