I am also the first time the Arch, has overturned countless times,
After each packed according to the official tutorial system has a problem,
It is even not wifi, can scan to wifi is unable to connect
Now know what is the problem:
I went to see the first in the deepin wifi driver,
Find more than the new clothes of the Arch a wl wifi driver,
I have checked the Arch start Live environment in the usb wifi driver,
Found that there is a wl driver, so he went to the Arch Wiki checked the,
Found that there is such a wifi driver,
Then I will give to reinstall the Arch installed broadcom - probably install the driver then restart, can find even wifi
So the record here