asus x550c wi-fi

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
2: asus-wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: asus-bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no

sudo rfkill unblock 1

vitaly@vitalybook:~$ sudo lspci -nnk
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0104] (rev 09)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port [8086:0101] (rev 09)
    Kernel driver in use: pcieport
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09)
    Subsystem: ASUSTeK Computer Inc. Device [1043:21fa]
    Kernel driver in use: i915
00:14.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller [8086:1e31] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
    Kernel driver in use: xhci_hcd
00:16.0 Communication controller [0780]: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 [8086:1e3a] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
    Kernel driver in use: mei_me
00:1a.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 [8086:1e2d] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
    Kernel driver in use: ehci-pci
00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller [8086:1e20] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:118f]
    Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 [8086:1e10] (rev c4)
    Kernel driver in use: pcieport
00:1c.1 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 [8086:1e12] (rev c4)
    Kernel driver in use: pcieport
00:1c.3 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 [8086:1e16] (rev c4)
    Kernel driver in use: pcieport
00:1d.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [8086:1e26] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
    Kernel driver in use: ehci-pci
00:1f.0 ISA bridge [0601]: Intel Corporation HM76 Express Chipset LPC Controller [8086:1e59] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
    Kernel driver in use: lpc_ich
00:1f.2 SATA controller [0106]: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] [8086:1e03] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
    Kernel driver in use: ahci
00:1f.3 SMBus [0c05]: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller [8086:1e22] (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device [1043:124d]
01:00.0 3D controller [0302]: NVIDIA Corporation GF117M [GeForce 610M/710M / GT 620M/625M/630M/720M] [10de:1140] (rev a1)
    Subsystem: ASUSTeK Computer Inc. GeForce GT 720M [1043:21fa]
    Kernel driver in use: nouveau
03:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
    Subsystem: AzureWave Device [1a3b:2c97]
    Kernel driver in use: ath9k
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device [10ec:5289] (rev 01)
    Subsystem: ASUSTeK Computer Inc. Device [1043:202f]
    Kernel driver in use: rtsx_pci
04:00.2 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0a)
    Subsystem: ASUSTeK Computer Inc. Device [1043:200f]
    Kernel driver in use: r8169

sudo dmesg | tail
sudo dmesg | grep -i -C3 "wi-fi\|wifi" 

vitaly@vitalybook:~$ sudo dmesg | tail
[sudo] password for vitaly: 
[   13.142596] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   13.143383] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   13.253600] r8169 0000:04:00.2 eth0: link down
[   13.253632] r8169 0000:04:00.2 eth0: link down
[   13.253672] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   13.254481] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   15.700200] r8169 0000:04:00.2 eth0: link up
[   15.700211] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[  229.244033] PPP BSD Compression module registered
[  229.265856] PPP Deflate Compression module registered

uname -a

[Linux vitalybook 3.11.0-15-generic #23-Ubuntu SMP Mon Dec 9 18:17:04 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
vitaly@vitalybook:~$ 

vitaly@vitalybook:~$ sudo apt-get install linux-headers-3.12.7
[sudo] password for vitaly: 
Чтение списков пакетов… Готово
Построение дерева зависимостей       
Чтение информации о состоянии… Готово
E: Не удалось найти пакет linux-headers-3.12.7
E: Не удалось найти пакет по регулярному выражению «linux-headers-3.12.7»

Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
        Subsystem: AzureWave Device [1a3b:2c97]
        Kernel driver in use: ath9k