no wifi en ubuntu 12.04

[doylelives]

Tengo instalado Ubuntu12.04 en mi laptop Samsung ATIV book2, pero no he podido conectarme a internet por wifi, he probado lo siguiente:
- no me aparece ningun icono de wifi o similar en el escritorio
- Activar independent sources para poder instalar additional drivers pero no veo ningún driver nuevo.
- iwconfig (me muestra)
eth0 no wireless extensions.
lo no wireless extensions.

- sudo lspci
00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4)
00:1c.3 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 4 (rev c4)
00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04)
01:00.0 Network controller: Atheros Communications Inc. Device 0036 (rev 01)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)


Nada de lo que he hallado parece servirme para poder activar wifi, ideas?