Setting up WiFi in Ubuntu Server 12.04 for Athreos 9271
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# The loopback network interface
auto lo eth0
iface lo inet loopback
# The primary network interface
iface eth0 inet dhcp
iface wlan0 inet dhcp
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0846:9030 NetGear, Inc. WNA1100 Wireless-N 150 [Atheros AR9271]
lo no wireless extensions.
Hi srijit92, Welcome to LQ. Have you tried to manually bring the interface up?
# ifup wlan0
# ifup eth0
Good luck. ;-)
Yes. After couple of restarts and changing CMOS battery, my wlan0 interface powered up.
But facing a new problem now. With my wired connection enabled (eth0) and static ip and gateway assigned, i can successfully browse net. But after I disconnect the wire, the wlan0 gets IP from router by DHCP and I can also ping the router. But I cannot ping the Internet like 220.127.116.11 etc. How to resolve this issue?
Distribution: Slackware, Windows, FreeBSD, OpenBSD, Mac OS X
Have you tried DHCP with the wired connection, if so, how does that work? I'm guessing your route, default gateway, and/or /etc/resolv.conf (possibly all three) aren't being updated properly when you switch connections.
While you're up on the wireless please issue and report the following: