Ubuntu: How do I get a Atheros Communications Inc. AR9285 Wireless Network Adapter working?



Question:

Hi ask ubuntu my wireless is not working so here is my info : System Using : Lenovo Z570

$ iwconfig

lo        no wireless extensions.    wlan0     IEEE 802.11bgn  ESSID:off/any              Mode:Managed  Access Point: Not-Associated   Tx-Power=off               Retry  long limit:7   RTS thr:off   Fragment thr:off            Power Management:off    eth0      no wireless extensions.  

$ sudo ifconfig

eth0      Link encap:Ethernet  HWaddr f0:de:f1:54:34:a2              inet addr:192.168.2.2  Bcast:192.168.2.255  Mask:255.255.255.0            inet6 addr: fe80::f2de:f1ff:fe54:34a2/64 Scope:Link            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1            RX packets:44257 errors:0 dropped:0 overruns:0 frame:0            TX packets:40079 errors:0 dropped:0 overruns:0 carrier:0            collisions:0 txqueuelen:1000             RX bytes:43571495 (43.5 MB)  TX bytes:4926319 (4.9 MB)            Interrupt:42     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:16436  Metric:1            RX packets:5977 errors:0 dropped:0 overruns:0 frame:0            TX packets:5977 errors:0 dropped:0 overruns:0 carrier:0            collisions:0 txqueuelen:0             RX bytes:708983 (708.9 KB)  TX bytes:708983 (708.9 KB)    wlan0 is not showing in thils , but now when i try to use.  

$ sudo ifconfig wlan0 up

SIOCSIFFLAGS: Operation not possible due to RF-kill

Now when i use this :

$ sudo rfkill list all

1: phy0: Wireless LAN      Soft blocked: no      Hard blocked: yes  2: ideapad_bluetooth: Bluetooth      Soft blocked: no      Hard blocked: no  4: hci0: Bluetooth      Soft blocked: no      Hard blocked: no  

Then i use command:

$ sudo rfkill unblock all

Then :

$ sudo rfkill list all

1: phy0: Wireless LAN      Soft blocked: no      Hard blocked: yes  2: ideapad_bluetooth: Bluetooth      Soft blocked: no      Hard blocked: no  4: hci0: Bluetooth      Soft blocked: no      Hard blocked: no  

Here phy0 Hard blocked = yes

Result was the same (then i again try to switch on/off wifi from keyboard by pressing Fn+F5 )

$ sudo rfkill list all

1: phy0: Wireless LAN      Soft blocked: yes      Hard blocked: yes  2: ideapad_bluetooth: Bluetooth      Soft blocked: no      Hard blocked: no  4: hci0: Bluetooth      Soft blocked: no      Hard blocked: no  

Now this time phy0 Soft blocked = yes as well as hard blocked : yes

Here is hardwares specs :

$ sudo lshw -class network

*-network DISABLED               description: Wireless interface         product: AR9285 Wireless Network Adapter (PCI-Express)         vendor: Atheros Communications Inc.         physical id: 0         bus info: pci@0000:03:00.0         logical name: wlan0         version: 01         serial: 68:a3:c4:9a:7e:62         width: 64 bits         clock: 33MHz         capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless         configuration: broadcast=yes driver=ath9k driverversion=3.2.0-24-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn         resources: irq:17 memory:f1900000-f190ffff    *-network         description: Ethernet interface         product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller         vendor: Realtek Semiconductor Co., Ltd.         physical id: 0         bus info: pci@0000:04:00.0         logical name: eth0         version: 05         serial: f0:de:f1:54:34:a2         size: 100Mbit/s         capacity: 100Mbit/s         width: 64 bits         clock: 33MHz         capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation         configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8105e-1.fw ip=192.168.2.2 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s         resources: irq:42 ioport:2000(size=256) memory:f1804000-f1804fff memory:f1800000-f1803fff  


Solution:1

I had this same problem. I solved it by pressing Fn+F2 on my keyboard. Press Fn and the key with the wifi symbol. It set the hard block to 'no'


Solution:2

I had the same problem with a Lenovo IdeaPad N585 (same Atheros card) where the hard blocked could only be controlled by the Energy Management software from Windows. Once it is enabled in Windows, it seems to stick throughout reboots so I had to enable it only once in Windows.


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