I am new in Ubuntu and I had a big trouble with wifi. My ubuntu 12.10 doesn't detect my wifi card and I can't toggle the "activate wireless" option on the tasks bar (it is grey). I searched for drivers to make it work, but nothing worked for me. Can anyone give me a hand? Many thanks in advanced!

lspci output

00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express Graphics Port (rev 07)
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV710 [Mobility Radeon HD 4500/5100 Series]
01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI RV710/730 HDMI Audio [Radeon HD 4000 series]
02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8057 PCI-E Gigabit Ethernet Controller (rev 10)
03:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)
0c:03.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
0c:03.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
0c:03.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)

lshw -c network output

  *-network               
   descripción: Ethernet interface
   producto: 88E8057 PCI-E Gigabit Ethernet Controller
   fabricante: Marvell Technology Group Ltd.
   id físico: 0
   información del bus: pci@0000:02:00.0
   nombre lógico: eth0
   versión: 10
   serie: 00:24:be:83:b2:4f
   tamaño: 100Mbit/s
   capacidad: 1Gbit/s
   anchura: 64 bits
   reloj: 33MHz
   capacidades: pm msi pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
   configuración: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full ip=192.168.1.123 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
   recursos: irq:45 memoria:d3520000-d3523fff ioport:c000(size=256) memoria:d3500000-d351ffff
  *-network DESACTIVADO
       descripción: Interfaz inalámbrica
       producto: AR928X Wireless Network Adapter (PCI-Express)
       fabricante: Atheros Communications Inc.
       id físico: 0
       información del bus: pci@0000:03:00.0
       nombre lógico: wlan0
       versión: 01
       serie: 2c:81:58:e6:b6:03
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuración: broadcast=yes driver=ath9k driverversion=3.5.0-18-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       recursos: irq:17 memoria:d2100000-d210ffff

rfkill list all output

0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: yes
1: sony-wifi: Wireless LAN
    Soft blocked: yes
    Hard blocked: no