Juanito,
"dmesg" result (end):
...
[ 7.016280] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 7.325565] EXT4-fs (sdb1): mounting ext2 file system using the ext4 subsystem
[ 7.338063] EXT4-fs (sdb1): warning: mounting unchecked fs, running e2fsck is recommended
[ 7.514928] EXT4-fs (sdb1): mounted filesystem without journal. Opts: (null)
[ 10.362446] cfg80211: Calling CRDA to update world regulatory domain
[ 10.514539] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:
[ 10.514542] iwl4965: Copyright(c) 2003-2011 Intel Corporation
[ 10.514614] iwl4965 0000:10:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 10.514624] iwl4965 0000:10:00.0: setting latency timer to 64
[ 10.514650] iwl4965 0000:10:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[ 10.553367] iwl4965 0000:10:00.0: device EEPROM VER=0x36, CALIB=0x5
[ 10.553828] iwl4965 0000:10:00.0: Tunable channels: 13 802.11bg, 19 802.11a channels
[ 10.553996] iwl4965 0000:10:00.0: irq 44 for MSI/MSI-X
[ 10.614417] iwl4965 0000:10:00.0: loaded firmware version 228.61.2.24
[ 10.614662] Registered led device: phy0-led
[ 10.614729] ieee80211 phy0: Selected rate control algorithm 'iwl-4965-rs'
Other messages...
"sudo ifconfig wlan0 up" gives
ifconfig: SIOCSIFFLAGS: Operation not possible due to RF-kill
"ifconfig wlan0 up" gives
ifconfig: SIOCSIFFLAGS: Permission denied
"iwlist wlan0 scan" gives
wlan0 Failed to read scan data: Network is down
"iwconfig"
wlan0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
"lsmod"
Module Size Used by Tainted: P
acpi_cpufreq 12288 1
mperf 12288 1 acpi_cpufreq
cpufreq_powersave 12288 0
cpufreq_userspace 12288 0
cpufreq_stats 12288 0
cpufreq_conservative 12288 0
iwl4965 69632 0
iwl_legacy 40960 1 iwl4965
mac80211 114688 2 iwl4965,iwl_legacy
cfg80211 94208 3 iwl4965,iwl_legacy,mac80211
squashfs 24576 39
scsi_wait_scan 12288 0
zcache 12288 0
zram 12288 1
loop 16384 78
pata_pcmcia 16384 1
pcmcia 28672 1 pata_pcmcia
hp_wmi 12288 0
ppdev 12288 0
sparse_keymap 12288 1 hp_wmi
sdhci_pci 12288 0
sdhci 20480 1 sdhci_pci
yenta_socket 20480 0
pcmcia_rsrc 16384 1 yenta_socket
serio_raw 12288 0
parport_pc 24576 0
pcspkr 12288 0
parport 24576 2 ppdev,parport_pc
mmc_core 45056 1 sdhci
pcmcia_core 16384 3 pcmcia,yenta_socket,pcmcia_rsrc
video 16384 0
hp_accel 20480 0
lis3lv02d 16384 1 hp_accel
backlight 12288 1 video
battery 12288 0
input_polldev 12288 1 lis3lv02d
ac 12288 0
wmi 12288 1 hp_wmi
e1000e 94208 0
There is no error by starting wifi in a terminal with "wifi" command.