Comment 23 for bug 1454843

I wrote 2 short scripts for replacing the drivers after new installation or kernel upgrades:
The first rtl8723be_install.sh is for download and installation of an alternative driver after a new installation, the second rtl8723be_reinstall.sh for re-installation after a kernel upgrade.

"rtl8723be_install.sh":

sudo apt-get install build-essential git
git clone https://github.com/lwfinger/rtlwifi_new/
cd rtlwifi_new
make
install
sudo make install
echo "options rtl8723be swenc=1 fwlps=0 ips=0" | sudo tee /etc/modprobe.d/rtl8723be.conf
sudo modprobe -r rtl8723be
sudo modprobe rtl8723be

"rtl8723be_reinstall.sh":

cd rtlwifi_new
make clean
git pull
make clean && make
sudo make install
sudo modprobe -rv rtl8723be
sudo modprobe -v rtl8723be

This is for me the best solution so far.