Arch Linux

Srf_rs

Member

Registered: 2010-06-24

Posts: 11

[Solved] Arduino nano won't show up in /dev/

I recently got this arduino nano v3.0. http://dx.com/p/nano-v3-0-avr-atmega328 … ino-118037

I tested it under Ubuntu 12.04 and it worked flawlessly.

Pluging it into a ArchLinux laptop was different.
There should be a /dev/ttyUSBX device when the board is connected but nothing shows up.

I loaded modules ftdi_sio and cdc-acm, $ ls -Rla /dev > /tmp/output1, plugged the board in, $ ls -Rla /dev > /tmp/output2

$ diff /tmp/output1 /tmp/output2 
42c42
< crw-rw-rw-   1 root tty     5,   2 Jan 30 13:23 ptmx
---
> crw-rw-rw-   1 root tty     5,   2 Jan 30 13:24 ptmx
484,485c484,485
< crw--w----  1 leuck tty  136, 0 Jan 30 13:23 0
< crw--w----  1 leuck tty  136, 1 Jan 30 13:23 1
---
> crw--w----  1 leuck tty  136, 0 Jan 30 13:24 0
> crw--w----  1 leuck tty  136, 1 Jan 30 13:24 1

dmesg

[ 3124.113250] usbcore: registered new interface driver usbserial
[ 3124.113280] usbcore: registered new interface driver usbserial_generic
[ 3124.113305] usbserial: USB Serial support registered for generic
[ 3124.118661] usbcore: registered new interface driver ftdi_sio
[ 3124.118695] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 3145.119113] usbcore: registered new interface driver cdc_acm
[ 3145.119119] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 3189.299749] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[ 3189.416414] usb 3-1: device descriptor read/64, error -71
[ 3189.636401] usb 3-1: device descriptor read/64, error -71
[ 3189.846425] usb 3-1: new full-speed USB device number 3 using uhci_hcd
[ 3189.963054] usb 3-1: device descriptor read/64, error -71
[ 3190.183100] usb 3-1: device descriptor read/64, error -71
[ 3190.393108] usb 3-1: new full-speed USB device number 4 using uhci_hcd
[ 3190.806387] usb 3-1: device not accepting address 4, error -71
[ 3190.913077] usb 3-1: new full-speed USB device number 5 using uhci_hcd
[ 3191.326389] usb 3-1: device not accepting address 5, error -71
[ 3191.326420] hub 3-0:1.0: unable to enumerate USB device on port 1

If i plug the board without loading the above mentioned modules, only the 'usb 3-1: *' and 'hub 3-0:1.0: *' messages appear in dmesg. And the /dev diff yields nothing.

Any ideas?

Last edited by Srf_rs (2013-01-31 00:20:25)

mich41

Member

Registered: 2012-06-22

Posts: 796

Re: [Solved] Arduino nano won't show up in /dev/

Bad cable or buggy USB controller driver.

Srf_rs

Member

Registered: 2010-06-24

Posts: 11

Re: [Solved] Arduino nano won't show up in /dev/

It was a bad cable, thanks!