Připoj kabel do USB a napiš v terminálu lsusb. Tam ho rozhodně uvidíš. Jinak COM, tedy sériový porty se v linuxu jmenují ttyS_číslo, takže po připojení do usb napsat : dmesg | grep tty a ttyS_něco by měl být tvůj sériový port.
Dík..takže mi to dá:
jitro@jitro-K70AF:~$ lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 0458:0036 KYE Systems Corp. (Mouse Systems) Pocket Mouse LE
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 005: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 13d3:5130 IMC Networks
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 14cd:6116 Super Top
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
jitro@jitro-K70AF:~$ dmesg | grep tty
[ 0.000000] console [tty0] enabled
[ 365.412792] usb 3-2: pl2303 converter now attached to ttyUSB0
[ 588.781143] type=1400 audit(1296062061.617:22): apparmor="DENIED" operation="open" parent=2141 profile="/usr/sbin/cupsd" name="/dev/ttyUSB0" pid=2145 comm="serial" requested_mask="w" denied_mask="w" fsuid=0 ouid=0
[ 3189.004133] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[ 3191.579368] usb 3-1: pl2303 converter now attached to ttyUSB0
[ 9037.348330] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[20346.547274] usb 3-2: pl2303 converter now attached to ttyUSB0
[21375.469942] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[21377.636344] usb 3-1: pl2303 converter now attached to ttyUSB0
po pravdě nevím moc co s tím
