Install Realtek RTL8723BE PCIe Wireless driver On Ubuntu and Linux Mint

This tutorial how to fix realtek RTL8723BE weak wifi signal or no wifi connection on Ubuntu or Linux Mint. A few days ago i just make new ubuntu installation on amd laptop and i found this problem, realtek RTL8723BE wifi drivers doesn't work. same case i had before when i make new linux Mint 17.3 ( rosa ) installation. in short these gave idea to write this, it might help other ubuntu user who has same problem.

There are two ways to install realtek RTL8723BE wifi drivers, both online or offline.

1. Online mode
If you get a temporary internet connection, open a terminal ( ctrl + alt + T )

sudo apt-get install linux-headers-generic build-essential git
git clone https://github.com/lwfinger/rtlwifi_new/tree/rock.new_btcoex
cd rock.new_btcoex
make
sudo make install

2. Offline mode
- get Realtek RTL8723BE PCIe Wireless driver here
- save to your usb pendrive.
- copied and extract rock.new_btcoex.zip to your ubuntu/linux mint local folder
- right click on rock.new_btcoex folder and choose "open in terminal".
- Install RTL8723BE PCIe Wifi driver

make
sudo make install

A. Then, check antenna sel

modinfo -p rtl8723be

ex result :

modinfo -p rtl8723be
swlps: (bool)
swenc:using hardware crypto (default 0 [hardware])
(bool)
ips:using no link power save (default 1 is open)
(bool)
fwlps:using linked fw control power save (default 1 is open)
(bool)
msi:Set to 1 to use MSI interrupts mode (default 0)
(bool)
debug:Set debug level (0-5) (default 0) (int)
disable_watchdog:Set to 1 to disable the watchdog (default 0)
(bool)
ant_sel:Set to 1 or 2 to force antenna number (default 0)
(int)

B. Tes antenna sel
it means there are 2 antenna sels, next try each antenna sell to know which works:

sudo modprobe -r rtl8723be
sudo modprobe rtl8723be ant_sel=1
iwlist scan | egrep -i 'ssid|level'

or

sudo modprobe -r rtl8723be
sudo modprobe rtl8723be ant_sel=2
iwlist scan | egrep -i 'ssid|level'

Ex result
Wifi signal not found arrow_downward

lo        Interface doesn't support scanning.
enp1s0    Interface doesn't support scanning.

Wifi signal found arrow_downward

lo        Interface doesn't support scanning.
enp1s0    Interface doesn't support scanning.
                    Quality=64/70  Signal level=-46 dBm  
                    ESSID:"wifi network1"
                    Quality=65/80  Signal level=-46 dBm  
                    ESSID:"wifi network2"

C. Set antenna sel If your antenna sel 1 find wifi signal then, do this.

echo "options rtl8723be ant_sel=1" | sudo tee -a /etc/modprobe.d/rtl8723be.conf

If your antenna sel 2 find wifi signal then, do this.

echo "options rtl8723be ant_sel=2" | sudo tee -a /etc/modprobe.d/rtl8723be.conf

restart, then your wifi should work
hope these help to resolved Realtek RTL8723BE PCIe Wireless driver on Ubuntu or Linux Mint.

There is another way to resolve Realtek RTL8723BE PCIe Wireless problems, check Another solution how to fix realtek rtl8723be wifi problem on Ubuntu. you will find another option to solve realtek rtl8723be wifi driver issue on Linux Ubuntu or Linux Mint by adding hanipouspilot PPA.

another Linux Troubleshoot tutorial, how to Fix and remove notification "system program problem detected" ubuntu , resolve the problem and read here .

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