I am using the ubuntu 11.10 on lenovo ideapad z570. My wireless internet is not working.

I have ensure that wireless switch is on. Windows 7, wireless works great.However ubuntu 11.10 is not allowing me to enable wireless connection.

I have run the

following command and here is the status.

sudo lshw -class network

  *-network DISABLED      
       description: Wireless interface
       product: Centrino Wireless-N 1000
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 00
       serial: 74:e5:0b:1c:a4:a4
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-12-generic firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:42 memory:d0500000-d0501fff


  *-network
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 05
       serial: f0:de:f1:64:b6:62
       size: 10Mbit/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=half firmware=rtl_nic/rtl8105e-1.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:2000(size=256) memory:d0404000-d0404fff memory:d0400000-d0403fff

Here is rfkill list all output:

rfkill list all

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no

1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

2: acer-wireless: Wireless LAN
    Soft blocked: yes
    Hard blocked: no

Note : Windows 7, wireless card property shows that Intel WifiLink 1000 BGN. Could someone help me to fix this issue.