A. Sidiq Purnomo

Universitas Mercu Buana Yogyakarta

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How To Fix Wireless Problem On My OS / Ubuntu 12.04

Problem :

  • Go to menu Application -> Accessories -> Terminal.
  • If the terminal window is already visible, then go to the right of access as root. Inside terminal, execute the following command :
    dnd@riyaniezt:~$ sudo -i
    [sudo] password for dnd:

Cek Your Wireless Problem :

  1. Inside Terminal, execute the following command:
    root@riyaniezt:~# ifconfig wlan0 up
    SIOCSIFFLAGS: Operation not possible due to RF-kill
  2. Inside Terminal, execute the following command:
    root@riyaniezt:~# cat /var/lib/NetworkManager/NetworkManager.state 
    
    [main]
    NetworkingEnabled=true
    WirelessEnabled=false
    WWANEnabled=true
    WimaxEnabled=true

     

  3. Inside Terminal, execute the following command:
    root@riyaniezt:~# lshw -C network
      *-network               
           description: Ethernet interface
           product: AR8131 Gigabit Ethernet
           vendor: Atheros Communications Inc.
           physical id: 0
           bus info: pci@0000:01:00.0
           logical name: eth0
           version: c0
           serial: 54:53:ed:58:29:8e
           capacity: 1Gbit/s
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair
           resources: irq:44 memory:f0100000-f013ffff ioport:2000(size=128)
      *-network DISABLED
           description: Wireless interface product: AR9285 Wireless Network Adapter (PCI-Express) 
           vendor: Atheros Communications Inc. physical 
           id: 0 bus 
           info: pci@0000:02:00.0 logical 
           name: wlan0 version: 01 
           serial: 08:ed:b9:aa:e5:71 
           width: 64 bits 
           clock: 33MHz 
           capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless 
           configuration: broadcast=yes driver=ath9k driverversion=3.2.0-32-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn 
           resources: irq:18 memory:f0000000-f000ffff

Solution :

  1. Inside Terminal, execute the following command:
    root@riyaniezt:~# rfkill unblock all
  2. Inside Terminal, execute the following command:
    root@riyaniezt:~# cat /var/lib/NetworkManager/NetworkManager.state 
    
    [main]
    NetworkingEnabled=true
    WirelessEnabled=false
    WWANEnabled=true
    WimaxEnabled=true
  3. Inside Terminal, execute the following command:
    root@riyaniezt:~# /etc/init.d/network-manager restart
    Rather than invoking init scripts through /etc/init.d, use the service(8)
    utility, e.g. service network-manager restart
    
    Since the script you are attempting to invoke has been converted to an
    Upstart job, you may also use the stop(8) and then start(8) utilities,
    e.g. stop network-manager ; start network-manager. The restart(8) utility is also available.
    network-manager stop/waiting
    network-manager start/running, process 7444


  4. Inside Terminal, execute the following command:
    root@riyaniezt:~# lshw -C network
      *-network               
           description: Ethernet interface
           product: AR8131 Gigabit Ethernet
           vendor: Atheros Communications Inc.
           physical id: 0
           bus info: pci@0000:01:00.0
           logical name: eth0
           version: c0
           serial: 54:53:ed:58:29:8e
           capacity: 1Gbit/s
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair
           resources: irq:44 memory:f0100000-f013ffff ioport:2000(size=128)
      *-network
                 description: Wireless interface
           product: AR9285 Wireless Network Adapter (PCI-Express)
           vendor: Atheros Communications Inc.
           physical id: 0
           bus info: pci@0000:02:00.0
           logical name: wlan0
           version: 01
           serial: 08:ed:b9:aa:e5:71
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
           configuration: broadcast=yes driver=ath9k driverversion=3.2.0-32-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
           resources: irq:18 memory:f0000000-f000ffff
  5. Inside Terminal, execute the following command:
    root@riyaniezt:~# cat /var/lib/NetworkManager/NetworkManager.state 
    
    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true
    WimaxEnabled=true
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Oct
27
2012
 


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