[DONE] avrdude:did not find any USB device "usb"

I whish to use Arduino IDE in MGA5x64.
When I try to load a sketch to an Arduino as root I get the following message:
As serial port I only have the choice: /dev/ttyS0
What to do?
When I try to load a sketch to an Arduino as root I get the following message:
[root@Humlan trinket-arduino-1.0.5]# Experimental: JNI_OnLoad called.
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version = RXTX-2.1-7
Binary sketch size: 1 084 bytes (of a 28 672 byte maximum)
Binary sketch size: 1 084 bytes (of a 28 672 byte maximum)
avrdude: usbdev_open(): did not find any USB device "usb"
As serial port I only have the choice: /dev/ttyS0
What to do?