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# Install x-related to compile x11vnc from source code.
sudo apt-get update 
sudo apt-get install -y libxtst-dev libssl-dev libjpeg-dev

# Grep source code.
wget http://x11vnc.sourceforge.net/dev/x11vnc-0.9.14-dev.tar.gz
gzip -dc x11vnc-0.9.14-dev.tar.gz | tar -xvf -
cd x11vnc-0.9.14/
./configure --prefix=/usr/local CFLAGS='-g -O2 -fno-stack-protector -Wall'

# Make and Make install.
make
sudo make install

# Grep lighdm auth file.
ps wwwwaux | grep auth

# Run x11vnc.
/usr/local/bin/x11vnc -auth /var/run/lightdm/root/:0 -display :0 -xkb -forever -shared &

# Or run with these parameters
-noxrecord -ncache_cr