I'm absolutely certain that wireless was working when I first installed Mint 9 but I always use Ethernet. Took the laptop to the hospital tonight for my wife to use and like a total fool I couldn't get this machine to connect to the hospital's free wireless (making an already bad situation even worse for my wife).
I must assume that the card is recognized and functional since the amber indicator light is lit up and iwconfig returns legitimate output.
# iwconfig wlan0 scan
wlan0 Scan completed :
Cell 01 - Address: 00:16:B6:D6:DE:6F
Frequency:2.437 GHz (Channel 6)
Quality=59/70 Signal level=-51 dBm
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
I went into the Gnome > Preferences > Network Connections applet and entered the SSID for the hospital SSID but nothing happened.
Checking for an IP address turned up nothing:
$ ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:13:02:0a:57:39
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
I've tried to release and renew using
# ifconfig wlan0 down
# ifconfig wlan0 up
With no results. As a last ditch effort I went back home to do a sanity check and I got the same results on my home wireless network (so maybe I'm crazy and I never connected to wireless from this machine). I had to dig up an old Windows XP laptop for my wife to use.
Anyways this is a built in Intel Pro Wireless card. I really have no idea what to try next. I'm so frustrated that I'm almost ready to wipe the machine and put Fedora on it.
# lspci | grep -i network
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
The Network Connections applet in gnome doesn't seem to work at all. I enter the SSID and click apply and nothing happens. I never get an IP address.