hi,
i used lazserial in past. it works fine.
you have to be shure that the serial port works, so try a connection with a software like a terminal to a serial connection of another computer like your laptop under any system.
if your serial connection works fine, then search the mistake at lazserial.
if you connect arduino in a new linux it is possible to get a port like /dev/plugandplaybullshit and not /dev/tty01 so i don't know the real portname
try using neutral tools like a terminal-programm and a non-arduino, after this it will work, lazserial is great !
best regards
w