I was using ubuntu 11.10 version in my Lenovo G430. In starting wireless was working properly. After some time it was not working. It was showing WIRELESS FIRMWARE MISSING. I tried my commands, there was no result. I un-installed Ubuntu and again re-installed for whole of my Laptop. I am not seeing anything related to wireless connection in the network manager while wired network option is working properly. I am pasting here some command results after TERMINAL operation. Please see these details and help me how to solve this problem.
**satyam@satyam-kingston:~$ lspci -vvnn |grep 14e4**
06:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:04b5]
07:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express [14e4:1713] (rev 02)
satyam@satyam-kingston:~$ sudo lshw -class network
[sudo] password for satyam:
*-network UNCLAIMED
description: Network controller
product: BCM4312 802.11b/g LP-PHY
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:06:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:f4700000-f4703fff
*-network
description: Ethernet interface
product: NetLink BCM5906M Fast Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:07:00.0
logical name: eth0
version: 02
serial: 00:23:8b:be:51:bc
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.119 duplex=full firmware=sb v3.04 ip=192.168.0.104 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:48 memory:f4600000-f460ffff
satyam@satyam-kingston:~$ rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: yes
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
satyam@satyam-kingston:~$
