Comment 12 for bug 66646

$ sudo -i
Password:
root@janus:~# find /dev | grep -i wacom
/dev/wacom
root@janus:~# ls -alF /dev/wacom
lrwxrwxrwx 1 root root 10 2007-10-13 20:37 /dev/wacom -> /dev/ttyS0
root@janus:~# setserial /dev/ttyS0 port 0x0338 irq 4 autoconfig
root@janus:~# setserial -a /dev/ttyS0
/dev/ttyS0, Line 0, UART: 16550A, Port: 0x0338, IRQ: 4
        Baud_base: 115200, close_delay: 50, divisor: 0
        closing_wait: 3000
        Flags: spd_normal skip_test

root@janus:~# wacdump -f c100 /dev/ttyS0
WacomOpenTablet: Invalid argument
root@janus:~# wacdump -v /dev/ttyS0
22:02:02.709 INFO: Opening log
WacomOpenTablet: Invalid argument