No wireless routers are detected on Ubunutu 12.10

Question

I am using Toshiba Satellite C-A50 laptop with Atheros AR9565 card. Even though the "wlan0" interface is shown in "ifconfig" no Wireless Routers are coming up to check a connection. "Enable Wireless" is ticked in the Network connection drop down."eth0" interface is working fine. I have installed compat-wireless-3.6.8-1-snpc "ath9k" driver for the wireless. The "dmesg" command in the terminal shows "[ 1972.160105] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready". Same Atheros wireless card works properly in Windows 7. Also kernel version. uname -r result 3.5.0-39-generic I am a beginner in Linux Please help me out.

lshw -c network result.

   *-network               
   description: Wireless interface

   product: AR9565 Wireless Network Adapter

   vendor: Atheros Communications Inc.

   physical id: 0

   bus info: pci@0000:08:00.0

   logical name: wlan0

   version: 01

   serial: 24:fd:52:4d:50:dc

   width: 64 bits

   clock: 33MHz

   capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless


   configuration: broadcast=yes driver=ath9k driverversion=3.5.0-39-generic 

   firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn

   resources: irq:17 memory:d3400000-d347ffff memory:9fb00000-9fb0ffff

   *-network

   description: Ethernet interface

   product: Atheros Communications Inc.

   vendor: Atheros Communications Inc.

   physical id: 0

   bus info: pci@0000:09:00.0

   logical name: eth0

   version: 10

   serial: 7c:05:07:87:5c:bc

   size: 100Mbit/s

   capacity: 100Mbit/s

   width: 64 bits

   clock: 33MHz


   capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 

    10bt 10bt-fd 100bt 100bt-fd autonegotiation

   configuration: autonegotiation=on broadcast=yes driver=alx driverversion=1.2.3 

     duplex=full firmware=N/A ip=192.168.4.58 latency=0 link=yes multicast=yes 

    port=twisted 

    pair speed=100Mbit/s
   resources: irq:18 memory:d1000000-d103ffff ioport:2000(size=128)

---

lspci result

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM 

Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family 

PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor 

Family Integrated Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI 

Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family 

MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB 

Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High 

Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express 

Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express 

Root Port 2 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express 

Root Port 3 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB 

Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA 

Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)

01:00.0 3D controller: NVIDIA Corporation Device 1140 (rev a1)

08:00.0 Network controller: Atheros Communications Inc. AR9565 Wireless Network Adapter (rev 01)

09:00.0 Ethernet controller: Atheros Communications Inc. Device 10a0 (rev 10)

---

ifconfig result.

eth0      Link encap:Ethernet  HWaddr 7c:05:07:87:5c:bc  
          inet addr:192.168.4.58  Bcast:192.168.4.255  Mask:255.255.255.0
          inet6 addr: fe80::7e05:7ff:fe87:5cbc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9904 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4521 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3059787 (3.0 MB)  TX bytes:917645 (917.6 KB)
          Interrupt:18 

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:978 errors:0 dropped:0 overruns:0 frame:0
          TX packets:978 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:157336 (157.3 KB)  TX bytes:157336 (157.3 KB)

wlan0     Link encap:Ethernet  HWaddr 24:fd:52:4d:50:dc  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Answer 1

I think you should remove the driver and install this one. 3.5

First remove the current driver:

cd <to the path of the old driver/compat-wireless-3.6.8-1-snpc>

sudo su

./scripts/driver-select restore

./scripts/driver-select ath9k

make clean

Then drag the file to your desktop right click on it and select extract here:

cd Desktop/compat-wireless-3.5.4-1-snpc
sudo su

./scripts/driver-select ath9k

make

make install

exit

After build and installation unload modules and drivers:

sudo make unload

sudo modprobe ath9k

Edit: Please do

echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k

Then:

sudo dpkg-reconfigure resolvconf

Then unplug your ehternet connection and see if your wifi can connect.