[Ftdi-usb-sio-devel] ftdi_sio ttyUSB0: ftdi_set_termios FAILED to set databits/stopbits/parity

[<jen...@we...>]

Hallo,

I want to programm an "Arduino Nano" from a Thinkpad T420 running Gentoo
Linux (Kernel: 3.16.5-gentoon und ftdi & co build as  modul, 64bit)


This happens

* Arduino plugged:
[ 184.188033] usb 2-1.1: new full-speed USB device number 4 using ehci-pci
[ 184.274623] usb 2-1.1: New USB device found, idVendor=1a86, idProduct=7523
[ 184.274636] usb 2-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ 184.274643] usb 2-1.1: Product: USB2.0-Serial
=> OK

* modprobe ftdi-sio:
[ 245.363725] usbcore: registered new interface driver usbserial
[ 245.363785] usbcore: registered new interface driver usbserial_generic
[ 245.363839] usbserial: USB Serial support registered for generic
[ 245.366834] usbcore: registered new interface driver ftdi_sio
[ 245.366872] usbserial: USB Serial support registered for FTDI USB Serial Device
=> OK

* it does not recognize the device, so it needs a little help:
* echo 1a86 7523 > /sys/bus/usb-serial/drivers/ftdi_sio/new_id
[ 259.876146] ftdi_sio 2-1.1:1.0: FTDI USB Serial Device converter detected
[ 259.876300] usb 2-1.1: Detected FT8U232AM
[ 259.876310] usb 2-1.1: Number of endpoints 3
[ 259.876319] usb 2-1.1: Endpoint 1 MaxPacketSize 32
[ 259.876328] usb 2-1.1: Endpoint 2 MaxPacketSize 32
[ 259.876336] usb 2-1.1: Endpoint 3 MaxPacketSize 8
[ 259.876344] usb 2-1.1: Setting MaxPacketSize 8
[ 259.876531] ftdi_sio ttyUSB0: Unable to read latency timer: -32
[ 259.876906] ftdi_sio ttyUSB0: Unable to write latency timer: -32
[ 259.877099] usb 2-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
=> OK

* via "arduino"-IDE (last Beta 1.5.8 binary from arduino.cc)
* Preferences: Board: Arduini Nano, Programmer: avrisp mkII, Port: /dev/ttyUSB0
* load any example-programm to the board:
[ 324.258430] ftdi_sio ttyUSB0: ftdi_set_termios FAILED to set databits/stopbits/parity
[ 324.258769] ftdi_sio ttyUSB0: ftdi_set_termios urb failed to set baudrate
[ 324.259146] ftdi_sio ttyUSB0: urb failed to clear flow control
[ 324.259891] ftdi_sio ttyUSB0: ftdi_set_termios urb failed to set baudrate
[ 324.260278] ftdi_sio ttyUSB0: urb failed to clear flow control
[ 324.260645] ftdi_sio ttyUSB0: failed to get modem status: -32
[ 324.511185] ftdi_sio ttyUSB0: failed to get modem status: -32
[...]
=> NOT OK
I can see the RX-led on the Arduino-board flashing - some informations seem to
be sent to the device.


On a Ubuntu 12.04 machine it all works without any problems - I can
upload programs to the Arduino - so the hardware of the Arduino is ok.

I could not find some helpful info at Google. Only the hint to press the
reset-button on the board immetially before upload. But it does not help.


Is there anybody who can give me a hint?
Is it a Gentoo related problem?
How can I check health of the tty USB0-device?


whit helpless regards

Jens