Install wifi drivers for Ubuntu / Lubuntu 14.04 on Acer Aspire 5755G (Broadcom BCM43227 network controller)

setup-wifi.sh

# Determine wireless device model (manufacturer 14e4 for Broadcom):
lspci -vvnn | grep 14e4

# Install Broadcom STA driver for BCM43227: 
sudo apt-get update
sudo apt-get install --reinstall linux-headers-generic build-essential dkms bcmwl-kernel-source
sudo modprobe -r b43 ssb wl brcmfmac brcmsmac bcma
sudo modprobe wl

# Connect (press Fn+F3 to enable wifi if necessary first):
sudo ifconfig wlan0 up
sudo iwlist wlan0 scanning
sudo iwconfig wlan0 essid MYSSID key s:MyWifiPwd
sudo dhclient wlan0

# Troubleshooting commands:
iwconfig
nm-tool
rfkill list
sudo lshw -C network

you save me brother . . :)

I have bought a new Acer Aspire E5-573-587Q . Its wifi is not working. output of iwconfig :-

eth0 no wireless extensions
lo no wireless extensions

can you please help me through this..

Not working for me 👎

I have bought Acer Aspire un.ge6si.002 E5-575. but wifi is not working....
I am running above commands in ubuntu 14.0 but error is coming on steps no.11...
wlan0: ERROR while getting interface flags: No such device
Plz help me...

Thank you. This helped me install wireless drivers for lubuntu on HP!!

Thanks a lot

Thank you!

Until the 6th step everything went right, but then all where error messages...

$ sudo ifconfig wlan0 up
wlan0: ERROR while getting interface flags: No such device

But suddenly the green led of my wi-fi device started to run and my laptop started to recognize the wi-fi's around me!

Great job! Thank you very much.

Read the following:
https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx