I just installed elementaryOs on one of my old computers and can't get the wifi working. The network-manager (GUI) shows both installed cards (Atheros AR9227 and Ralink 802.11g) but claims that both are "disabled by hardware-switch". This is strange since I am working on a desktop computer and have never seen any wireless switch on the machine.
rfkill list one of the cards is not blocked at all:
0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: phy1: Wireless LAN Soft blocked: no Hard blocked: yes
Update: The hardware is definitely not disabled. I installed Windows XP on the machine and Wifi works fine under Windows. I then tried installing Debian and even could use the Wifi-Adapter during the installation process (net-install) . But once the installation was complete, Wifi didn't work again.
Any idea what is going on?