raspberry pi + volumio + lcd 16*2

Hello i
I’m a new user of volumio on raspberry it’s work great but have some problems with the audio some noise whith my musical fidelity vdac.

I have ordered a new dac with i2s input i hope that the noise disappear.

but the big problems is with the lcd display. I have also a display with HD44780 compatible and i bellow this thread andypi.co.uk/?p=334
But there is nothing on the display he is just illuminate but nothing written. So please help me please.

I want to know if installing a display with volumio version 1.2 is possible or not. And what can i do to make it work.

thank you for your help and sorry for my bad english.