беспроводная связь не работает 14.04.3 LTS

друзья, два дня, я работаю, я пытаюсь сделать что-то от внутренних и внешних форумов, но не сделал. Я ценил бы, если можно помочь.

a) Я установил обновления.

b) может соединиться с проводным

c) Я установил сторону Windows 7, рабочая беспроводная связь, как вводится в окна

d) fn + f3 для открытия беспроводного ключа, который не работает, не продвигается когда человечность радиосигнала.

закройте шоу монитора:

                                ubuntu 14.04
                                                ..... reboot: system halted
*stopping rsync daemon rsync                                        [OK]
*speech-dispatcher disabled ; edit/etc/default/speech-dispatcher
*asking all remaining processes to terminate...                     [OK]
all processes ended within 1 seconds...                             [OK]   
modemManager[640]: <info> Caught signal, shutting down...
modemManager[640]: <info> modemManager is shutting down

lspci производят:

00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 02)
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 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 420M] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)
02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe (rev 01)
03:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)

lspci-knn | grep Сеть-A2; список rfkill

02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
    Subsystem: Acer Incorporated [ALI] Device [1025:036d]
    Kernel driver in use: tg3
03:00.0 Network controller [0280]: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) [168c:002e] (rev 01)
    Subsystem: Lite-On Communications Inc Device [11ad:6603]
    Kernel driver in use: ath9k
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes

iwconfig

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

lo        no wireless extensions.

eth0      no wireless extensions.

сканирование iwlist

wlan0     Failed to read scan data : Network is down

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.