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0. Justification. Defining our scenario

Introduction

One may think about why to create a new blog. The previous blog JSF Dantescas needed a cleaner format. So I have decided to create a better-structured blog.

Our scenario is

  1. Computer: Lenovo Ideapad 310 with 8 GB of RAM, AMD A12 Processor, SSD 120 GB
  2. OS: Ubuntu 16.04.3 (Realtek 8821ae Wifi driver does not work fine as wifi hangs !!)

In order to try to solve this problem I have followed this steps: 
  1. Open a terminal window and verify that the Realtek 8821ae Wifi card is installed in the computer: 

      lspci | grep -i net

  2. Follow the instructions from elMaxx! in order to install the Realtek driver,: 

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

  3. Now reboot the system and uninstall and reinstall "rtl8821ae" 
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    sudo modprobe -r rtl8821ae
sudo modprobe rtl8821ae

  4. Problems should have gone.

  5. Maybe you can restart the Network Manager services, but I think it is not necessary

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    sudo service network-manager restart

  6. But this procedure did not work. I had to buy a well tested 2,4 GHz USB WiFi receiver (TP Link). And the problem has been solved as Ubuntu recognized it when was plugged before booting the system.
Solution: 

 1. Download  Drivers form Ole Petter Bang
2. cd rtl8812au-master
3. make
4. sudo make install
5. modprobe 8812au
6. And then you need to restart your PC.

Required software

  1. Java JDK version 8. (As Java 9 is not completely implemented ok in Eclipse).  Follow the steps of  Rahoul K. (In a near future we will try to use JDK 9, but for now java 1.8 is enough)

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    #download repository
sudo add-apt-repository ppa:webupd8team/java

#update reposotory
sudo apt-get update

#install
sudo apt install oracle-java8-installer
  3. Download Eclipse Oxygen v2 for JEE and extract the compressed file into a folder.
  4. Download Project-Lombok and execute the jar file to install into eclipse installation.
  5. Download Tomcat 9 and extract the compressed file into a folder
  6. In Eclipse select View-Show View-Server and add a new server Tomcat selecting the folder where it has been installed. 
  7. Install Postgres database from EnterpriseDB.

Verify that:

Lombok has been completely installed. Create a class and add annotation @Getter to an attribute of the class( for instance myName) and verify that you can use the method getMyName is recognized.

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