I2C + LCD LCM1602 Problems

Hi there,

I have an intermittent problem with an i2c LCD connected to the my Edison. Running this simple program (see below) produces different results:

+ Sometimes "Hello World!" gets printed;

+ Sometimes I get a row with all "pixels" completely lit;

As I said I can't replicate it - running the program below from the command line produces the two above results randomly.

#include "lcm1602.h"
#include <unistd.h>

int
main(int argc, char **argv)
{    upm::Lcm1602* lcd = new upm::Lcm1602(6, 0x27);    lcd->setCursor(0,0);    lcd->write("Hello World!");    lcd->close();    return 0;

}

Any hints on how to debug this are greatly appreciated

Thanks!