# tail -f /var/log/kern.log
Sep 27 01:41:19 debian kernel: [ 1823.864184] wlan0: deauthenticating from 58:6d:8f:9f:ba:17 by local choice (reason=3)
Sep 27 01:41:21 debian kernel: [ 1825.533768] wlan0: direct probe to AP 58:6d:8f:9f:ba:17 (try 1)
Sep 27 01:41:21 debian kernel: [ 1825.537794] wlan0: direct probe responded
Sep 27 01:41:21 debian kernel: [ 1825.537804] wlan0: authenticate with AP 58:6d:8f:9f:ba:17 (try 1)
Sep 27 01:41:21 debian kernel: [ 1825.553152] wlan0: authenticated
Sep 27 01:41:21 debian kernel: [ 1825.553194] wlan0: associate with AP 58:6d:8f:9f:ba:17 (try 1)
Sep 27 01:41:21 debian kernel: [ 1825.566178] wlan0: RX AssocResp from 58:6d:8f:9f:ba:17 (capab=0x411 status=0 aid=11)
Sep 27 01:41:21 debian kernel: [ 1825.566186] wlan0: associated
Sep 27 01:42:06 debian kernel: [ 1870.656083] wlan0: deauthenticating from 58:6d:8f:9f:ba:17 by local choice (reason=3)

# dmesg | grep iwl
[    5.666238] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, 1.2.26ks
[    5.666240] iwl3945: Copyright(c) 2003-2009 Intel Corporation
[    5.666305] iwl3945 0000:0c:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    5.666319] iwl3945 0000:0c:00.0: setting latency timer to 64
[    5.736368] iwl3945 0000:0c:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[    5.736371] iwl3945 0000:0c:00.0: Detected Intel Wireless WiFi Link 3945ABG
[    5.736512] iwl3945 0000:0c:00.0: irq 29 for MSI/MSI-X
[    6.020699] phy0: Selected rate control algorithm 'iwl-3945-rs'
[   11.809447] iwl3945 0000:0c:00.0: firmware: requesting iwlwifi-3945-2.ucode
[   11.852113] iwl3945 0000:0c:00.0: loaded firmware version 15.32.2.9
[   11.921446] Registered led device: iwl-phy0::radio
[   11.921474] Registered led device: iwl-phy0::assoc
[   11.921500] Registered led device: iwl-phy0::RX
[   11.921524] Registered led device: iwl-phy0::TX
[  115.927136] iwl3945 0000:0c:00.0: Card state received: HW:Kill SW:On
[  115.961054] iwl3945 0000:0c:00.0: Error sending REPLY_LEDS_CMD: enqueue_hcmd failed: -5
[  115.969455] iwl3945 0000:0c:00.0: MAC is in deep sleep!.  CSR_GP_CNTRL = 0x040003DD
[  125.880981] Registered led device: iwl-phy0::radio
[  125.881072] Registered led device: iwl-phy0::assoc
[  125.881123] Registered led device: iwl-phy0::RX
[  125.881179] Registered led device: iwl-phy0::TX