About the blurry wallpaper bug
Several people have told us that when they start their Ubuntu with multiple monitors, it always starts with a blurred background on one of the monitors. Apparently, this is a fairly common problem that can go unnoticed, but for the more demanding users, here is the solution.
This solution has been tested on Ubuntu 16 with two monitors, one HDMI and the other VGA with DVI adapter, the HDMI monitor always started with blurry screen background and inappropriate dimension. It is a shell script that will take care of properly sizing the wallpapers, according to the resolution of your monitor.
Script installation
Si tienes instalado unzip, solo debes copiar y pegar en el terminal y ejecutar:
wget -O uwf https://git.io/vPQ4f && chmod + x uwf && ./wwf && rm uwf
Si no tienes instalado unzip, puedes hacerlo con el siguiente comando, luego ejecuta el anterior
sudo apt-get install unzip
The script will automatically correct the problem in question.
How to uninstall the script
If you want to uninstall the script to correct the bug, just run the following command:
wget -O uwf -rm https://git.io/vPQRL && chmod + x uwf-rm && ./uwf-rm && rm uwf-rm