Нет WiFi в 12.04 новая установка

Я новичок, который только что установил 12.04 на свой домашний компьютер Intel I3-550. Должен ли быть графический интерфейс для WiFi? Там нет упоминания об этом в списке приложений.

Мой предыдущий компьютер был ОС Windows, и в правом нижнем углу у него была маленькая иконка, на которой нажимали, и на ней отображались сети в этом районе. Так работает Ubuntu?

Сейчас я подключен через Ethernet, но не могу понять, как подключиться через WiFi.

я

fconfig:
eth0      Link encap:Ethernet  HWaddr 48:5b:39:94:28:00  
          inet addr:192.168.0.143  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::4a5b:39ff:fe94:2800/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1683232 errors:0 dropped:0 overruns:0 frame:0
          TX packets:550623 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2246831369 (2.2 GB)  TX bytes:86014926 (86.0 MB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:8160 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8160 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1194958 (1.1 MB)  TX bytes:1194958 (1.1 MB)

lspci:
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 18)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06)
00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 06)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 06)
00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 06)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation 5 Series Chipset LPC Interface Controller (rev 06)
00:1f.2 IDE interface: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA IDE Controller (rev 06)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
00:1f.5 IDE interface: Intel Corporation 5 Series/3400 Series Chipset 2 port SATA IDE Controller (rev 06)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 03)
02:00.0 IDE interface: JMicron Technology Corp. JMB368 IDE controller
3f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05)
3f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05)
3f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
3f:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
3f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
3f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)