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[ubuntu] 12.04 with DWA-552 and ath9k: no wlan0, no connection

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http://ubuntuforums.org – Hello Ubuntu forums, I recently built a desktop and installed ubuntu 12.04 64-bit. I purchased a refurbished D-link DWA-552 for this machine because help.ubuntu.com claims that the card worked "out of the box" with ubuntu and ath9k, and because of many reviews which made the same claim. However, after installing this card I have no wireless access, and ifconfig and iwconfig do not show any wireless interfaces. ifconfig: Code: Gimcrack5@desktop:~$ ifconfig -a eth0      Link encap:Ethernet  HWaddr 14:da:e9:1b:aa:27           UP BR (Hardware)