In my case, when I issue a 'iwlist scan', it does find the network. On
issuing the command the 2nd time, the network is lost.
I tried this a few times with rmmod'ing and modprobing and checking
this.
I then started knetworkmanager and that app found the network and also
connected to it.
Looks like something changes when 'iwlist scan' is issued.
[iwlist scan first run report]
eth1 Scan completed :
Cell 01 - Address: 00:03:52:A4:76:00
ESSID:"ibahn_conf"
Mode:Master
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=88/100 Signal level=-45 dBm Noise level=-127 dBm
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:tsf=0000000016446f9d
Cell 02 - Address: 00:03:52:A7:65:F0
ESSID:"ibahn_conf"
Mode:Master
Channel:8
Frequency:2.447 GHz (Channel 8)
Quality=93/100 Signal level=-36 dBm Noise level=-127 dBm
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:tsf=0000000003ed6b14
[dmesg report after two 'iwlist scan' commands. 2nd time, it reports no
scan results]
[ 34.515447] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection
driver for Linux, 1.2.0
[ 34.515456] iwl3945: Copyright(c) 2003-2007 Intel Corporation
[ 34.515595] ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 17 (level, low) ->
IRQ 17
[ 34.515629] PCI: Setting latency timer of device 0000:03:00.0 to 64
[ 34.517296] iwl3945: Detected Intel PRO/Wireless 3945ABG Network Connection
[ 34.586676] iwl3945: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 34.588183] wmaster0: Selected rate control algorithm 'iwl-3945-rs'
[ 34.596859] udev: renamed network interface wlan0 to eth1
[ 34.619300] ADDRCONF(NETDEV_UP): eth1: link is not ready
--
[hardy] iwl3945 fails reporting networks with iwlist wlan0 scan
https://bugs.launchpad.net/bugs/192119
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