Unfortunately my project did not work at the clients site, it must be a chance that it works here a couple of times. So even if I flash the Arduino with 0018 IDE my Linux application can not receive Data if the Arduino is connected to the PC at startup. The serious thing is, that when I do
lsof |grep /dev/ttyUSB
the result is nothing.
/dev/ttyUSB0 is present in the file system. I can see the FTDI chip in /dev/serial/by-id and /dev/serial/by-path
reports "can not exec /dev/ttyUSB0 : No such file or directory. But /dev/ttyUSB0 is present in the file system