user@computer:~$ dmesg | grep tty
[ 0.088345] printk: console [tty0] enabled
[ 0.418156] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 5.030307] usb 1-3.1.3: pl2303 converter now attached to ttyUSB0
[86188.149229] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[86271.641530] usb 1-2: pl2303 converter now attached to ttyUSB0
[86796.881771] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[86855.323347] usb 1-4: pl2303 converter now attached to ttyUSB0
[86877.932139] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[86884.784432] usb 1-4: pl2303 converter now attached to ttyUSB0
[87068.706927] pl2303 ttyUSB0: pl2303_set_control_lines – failed: -19
[87068.706937] pl2303 ttyUSB0: error sending break = -19
[87068.707250] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[259915.126314] cdc_acm 1-3.1.3:1.0: ttyACM0: USB ACM device