I have a HP Pavilion dm4-2070us which has an Intel Corporation Centrino Wireless-N 1000 adapter.
The problem is that my computer doesn't show the wireless networks after I upgraded my system to Ubuntu 11.10. Following is my output for sudo lshw -class network
:
*-network DISABLED
description: Wireless interface
product: Centrino Wireless-N 1000
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:01:00.0
logical name: wlan0
version: 00
serial: 8c:a9:82:81:5a:30
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:c2500000-c2501fff
*-network
description: Ethernet interface
product: AR8151 v2.0 Gigabit Ethernet
vendor: Atheros Communications
physical id: 0
bus info: pci@0000:08:00.0
logical name: eth0
version: c0
serial: 2c:41:38:07:f3:e3
size: 100Mbit/s
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 duplex=full firmware=N/A ip=192.168.1.7 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:44 memory:c1400000-c143ffff ioport:2000(size=128)
The output for rfkill list all
:
0: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hp-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hp-wwan: Wireless WAN
Soft blocked: no
Hard blocked: no
I have also searched about the status of the WiFi network being shown as disabled. Somehow everything pointed to the fact that my wireless device is switched off and it can be switched on from Windows only. However, I don't have windows partition and it has just Ubuntu 11.10 so I don't see any point in switching the device on in Windows.