I recently opened my laptop to repair a faulty internal DC power jack, which involved removing and reinstalling the Broadcom wireless card. Wireless worked fine before but now I cannot locate any APs (wired internet works fine). I reconnected the antenna wires to I believe the correct attachment points on the wireless card and cannot determine what's wrong. Toggling the physical wireless button doesn't seem to make a difference (doesn't seem to affect the wireless LED either). Here are some diagnostics that might be helpful. Would be more than grateful to anyone who can help troubleshoot this problem. Does this seem like a hardware problem? The only thing that changed between the wireless working and not working was removing and reinstalling the wireless card...
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11 ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Retry min limit:7 RTS thr
ff Fragment thr=2352 B
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
# iwlist wlan0 scan
wlan0 No scan results
# lspci | grep Broadcom
06:02.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
# dmesg | grep b43
[ 10.649035] b43-phy0: Broadcom 4318 WLAN found
[ 21.179076] input: b43-phy0 as /class/input/input8
[ 21.260105] firmware: requesting b43/ucode5.fw
[ 21.382393] firmware: requesting b43/pcm5.fw
[ 21.459161] firmware: requesting b43/b0g0initvals5.fw
[ 21.488703] firmware: requesting b43/b0g0bsinitvals5.fw
[ 21.684073] b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
[ 22.628439] Registered led device: b43-phy0::radio
[ 22.628606] b43-phy0: Radio hardware status changed to DISABLED
# ifconfig wlan0 down
# ifconfig wlan0 up
# dmesg | tail
[ 972.063512] input: b43-phy0 as /class/input/input9
[ 972.300579] b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
[ 973.092472] Registered led device: b43-phy0::radio
[ 973.092575] b43-phy0: Radio hardware status changed to DISABLED
[ 973.188078] b43-phy0: Radio turned on by software
[ 973.188088] b43-phy0: The hardware RF-kill button still turns the radio physically off. Press the button to turn it on.
[ 973.188891] ADDRCONF(NETDEV_UP): wlan0: link is not ready