cannot connect to wifi on ubuntu 14.04.3

Question

I installed Ubuntu 14.04.30 LTS using a USB stick. I didn't dual boot my pc, I deleted my old OS. I can't find Enable Wireless in the network menu. The output for rfkill

----------------------------------
rfkill list all
0: hci0: Bluetooth 
        Soft blocked: no
        Hard blocked: no
-----------------------------------

The output for lshw -c network

*-network
      description: Network controller
      product: BCM4312 802.11b/g LP-PHY
      vendor: Broadcom Corporation 
      physical id: 0
      bus info: pci@0000:03:00.0
      version: 01
      width: 64 bits
      clock: 33MHz
      capabilities: bus_master cap_list
      configuration: driver=b43-pci-bridge latency=0
      resources: irq:18 memory:99700000-99703fff
*- network 
      description: Ethernet interface 
      product: RTL1801E/RTL8102E PCI Express Fast Ethernet controller 
      vendor: Related Semiconductor Co., Ltd.
      physical id: 0
      bus info: pci@0000:04:00.0
      logical name: eth0
      version: 02
      serial: 00:1e:ec:a1:73:dd
      size: 10Mbit/s
      capacity: 100Mbit/s
      width: 64 bits
      clock: 33MHz
      capabilities: bus_master cap_list rom Ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation

I am new to Linux and have no idea what to do. I can see the WiFi symbol at the top right corner of the screen. But its blank. When I click on it I can see that Enable Networking is checked. The other options are Edit connections & VPN connections. I don't have access to internet. Can't use Ethernet as a WiFi network is all I can access. I have just downloaded Ubuntu 14.04.3 and haven't installed any drivers or packages

score 0 · Answer 1 · edited Apr 13 '17 at 12:24

You can install the Broadcom 4312 driver through the terminal with these commands :

sudo apt-get update

then

sudo apt-get install bcmwl-kernel-source

Once installed just reboot and then it should be working.

If that doesn't work you can try this:

Search Additional Drivers and once there you have to click on Broadcom STA wireless driver and enable it.

Restart and see if that works for you.

The last thing i would recommend to you is reinstall Ubuntu and when it asks if you want to install the 3rd party software (restricted extras) then make sure that it is ticked. Once Ubuntu finishes installing your wifi should be working on first boot.

You might need to install an additional driver once you are connected to the wifi because the restricted extras driver might be unstable but it should work enough for you to install the other driver.

Check my post here for additional help.

score 0 · Answer 2 · answered Oct 17 '15 at 14:13

0

You can install bcmwl driver from USB. open terminal(Ctrl+Alt+T) and enter these commands:

cd /"path_to_USB_directory"
sudo dpkg -i pool/main/d/dkms/*.deb
sudo dpkg -i pool/restricted/b/bcmwl/*.deb

Then reboot your system.

answered Oct 17 '15 at 14:13

Ghasem Pahlavan

1,885

score -1 · Answer 3 · answered Oct 17 '15 at 11:02

Been their try this

‪ ‎sudo‬ apt-get install build-essential linux-headers-generic git ‪ ‎

mkdir‬ ~/RTl8188EU

‪cd‬ ~/RTL8188EU

‪‎git‬ clone git://github.com/lwfinger/rtl8188eu

cd ~/RTL8188EU/rtl8188eu

sudo make

sudo make install

sudo cp -v ~/RTL8188EU/rtl8188eu/rtl8188eufw.bin /lib/firmware/rtlwifi/

sudo deomod -a

sudo update-initramfs -u

sudo modprobe 8188eu

cannot connect to wifi on ubuntu 14.04.3

3 Answers3