please help me…wireless not working on lenovo g50-70 laptop…i am using ubuntu 14.04 operating system
OK hari we’re going to need some information from you…
Can you open a terminal (Ctrl+Alt+T) and run these commands and post what’s returned back here
(remember you can copy/paste into/from the terminal)
lspci -vnn | grep -i net
and
sudo lshw -C network
and
iwlist scan
and
rfkill list
Hi,
I have the same problem, here is my output as you asked:
michael@michael-Lenovo-G50-30:~$ lspci -vnn | grep -i net
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
michael@michael-Lenovo-G50-30:~$ sudo lshw -C network
[sudo] password for michael:
*-network DISABLED
description: Wireless interface
product: RTL8723BE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 00
serial: c0:38:96:59:2a:6d
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=3.16.0-43-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:18 ioport:2000(size=256) memory:90500000-90503fff
*-network DISABLED
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth0
version: 10
serial: 68:f7:28:28:59:fd
size: 10Mbit/s
capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:105 ioport:1000(size=256) memory:90404000-90404fff memory:90400000-90403fff
michael@michael-Lenovo-G50-30:~$ iwlist scan
eth0 Interface doesn’t support scanning.
wlan0 Failed to read scan data : Network is down
lo Interface doesn’t support scanning.
michael@michael-Lenovo-G50-30:~$ rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: yes
1: ideapad_bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: yes
2: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
michael@michael-Lenovo-G50-30:~$
Can you run these commands in sequence
sudo modprobe -r ideapad-laptop
then
sudo rfkill unblock all
then post the output from:
rfkill list
Hi Mark,
Thanks your assistance, here is output:-
michael@michael-Lenovo-G50-30:~$ sudo modprobe -r ideapad-laptop
[sudo] password for michael:
michael@michael-Lenovo-G50-30:~$ sudo rfkill unblock all
michael@michael-Lenovo-G50-30:~$ rfkill list
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
michael@michael-Lenovo-G50-30:~$
sorry, I forgot to ask…
if you run those 3 commands, does wireless spring to life ?
Be Aware, if you reboot you’lll have to run them again but if they work we can make it permanent.
Bingo, working. Now need to get this permanent.
OK, open a terminal and run:
sudo gedit /etc/modprobe.d/blacklist.conf
when a file opens with a bunch of stuff already in it, add these 2 NEW lines at the bottom:-
# Manually added by Hookheathen to fix wireless
blacklist ideapad-laptop
SAVE the file and exit gedit.
Reboot to test if wireless works without you having to manually run those commands.
Working fine. Thank you very much, you have been most helpful. 
You’re most welcome