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modprobe -r iwlwifi
modprobe r iwlwifi

[ 1314.845445] iwlwifi 0000:03:00.0: PCI INT A disabled
[ 1317.952204] cfg80211: Calling CRDA to update world regulatory domain
[ 1317.960898] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[ 1317.960904] Copyright(c) 2003-2011 Intel Corporation
[ 1317.961060] iwlwifi 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 1317.961099] cfg80211: World regulatory domain updated:
[ 1317.961105] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1317.961110] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1317.961116] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1317.961120] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1317.961125] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1317.961133] iwlwifi 0000:03:00.0: setting latency timer to 64
[ 1317.961141] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1317.961211] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[ 1317.961217] iwlwifi 0000:03:00.0: pci_resource_base = ffffc90011088000
[ 1317.961222] iwlwifi 0000:03:00.0: HW Revision ID = 0x35
[ 1317.961517] iwlwifi 0000:03:00.0: irq 43 for MSI/MSI-X
[ 1317.961682] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6200 AGN, REV=0x74
[ 1317.961835] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 1317.977267] iwlwifi 0000:03:00.0: device EEPROM VER=0x436, CALIB=0x6
[ 1317.977273] iwlwifi 0000:03:00.0: Device SKU: 0X1f0
[ 1317.977317] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[ 1317.977631] iwlwifi 0000:03:00.0: RF_KILL bit toggled to disable radio.
[ 1317.982484] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532
[ 1317.982861] Registered led device: phy0-led
[ 1317.982978] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'

rfkill list all
1: tpacpi_bluetooth_sw: Bluetooth
	Soft blocked: no
	Hard blocked: yes
3: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
4: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: yes

rfkill unblock all

rfkill list all
1: tpacpi_bluetooth_sw: Bluetooth
	Soft blocked: no
	Hard blocked: yes
3: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
4: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: yes

lspci -vv
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6200 (rev 35)
	Subsystem: Intel Corporation Centrino Advanced-N 6200 2x2 AGN
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast TAbort- TAbort- MAbort- >SERR- PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 43
	Region 0: Memory at f0600000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: access denied
	Kernel driver in use: iwlwifi

lshw -C network
*-network DISABLED     
       description: Wireless interface
       product: Centrino Advanced-N 6200
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 35
       serial: 58:94:6b:1a:10:30
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-2-amd64 firmware=9.221.4.1 build 25532 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
       resources: irq:43 memory:f0600000-f0601fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: eth0
       version: 03
       serial: 60:eb:69:8a:aa:bd
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168d-2.fw ip=10.0.0.146 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:40 ioport:2000(size=256) memory:f0a04000-f0a04fff memory:f0a00000-f0a03fff memory:f0a20000-f0a3ffff
  *-network
       description: Ethernet interface
       physical id: 1
       logical name: tap1
       serial: 3a:47:6a:c2:3e:cb
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full firmware=N/A ip=172.16.1.100 link=yes multicast=yes port=twisted pair speed=10Mbit/s

lsmod |grep iwl
iwlwifi               166703  0 
mac80211              192768  1 iwlwifi
cfg80211              137140  2 iwlwifi,mac80211

uname -a
Linux lenovo 3.2.0-2-amd64 #1 SMP Sun Mar 4 22:48:17 UTC 2012 x86_64 GNU/Linux