Dell Latitude D820 laptop, lspci reports the network card as:
0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Netwo rk Connection (rev 02)
iwlwifi driver in use, card associated via wpa_supplicant but not being
actively used
# iwconfig
wlan0 IEEE 802.11abg ESSID:"VT-Wireless"
Mode:Managed Frequency:2.447 GHz Access Point: 00:11:20:A4:4C:10
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:<lopped out> [2]
Link Quality=62/70 Signal level=-48 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
# cat /proc/net/wireless
Inter-| sta-| Quality | Discarded packets | Missed | WE
face | tus | link level noise | nwid crypt frag retry misc | beacon | 22
wlan0: 0000 63. -47. -256 0 0 0 0 0 0
wlan1: 0000 0 0 0 0 0 0 0 0 0
wlan2: 0000 0 0 0 0 0 0 0 0 0
Where did that -256 for "noise" come from? It ends up confusing the
gkrellm-wifi plugin, it reports a S/N of 219dB ;)
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