Thanks for the post.
I had a similar issue with my Edison but it seemed to be fixed when I flashed the most recent OS.
I installed edison-image-ww18-15
Hi, jeg, thanks for your answer. I'm using the latest image.
After changing the COM port name, re-installing drivers and plug in and plug out several times, I managed to solve the problem by installing the Arduino 1.6.5. Now it's working fine! I hope it can help to other people that have or will have the same issue