[Ftdi-usb-sio-devel] FTDI driver crash on 64-bit Ubuntu with Arduino

[David P. <da...@de...>]

Hello.  I've searched everywhere for a solution to this problem, but 
can't find one.  I'm hoping someone here can help.

The background:
I have only just recently replaced my old slow Windows XT machine with a 
new HP 64-bit quad processor.  It came with 64-bit Vista which doesn't 
allow 32-bit drivers, so I decided this is the decade that I will switch 
to Linux and loaded 64-bit Ubuntu 9.10 (Karmic Koala) on it.
I also have an Arduino clone (Seeduino) which uses the FTDI FT232RL chip 
that I want to use.

The problem:
If I plug in the Arduino to the USB port, /dev/ttyUSB0 appears and this 
appears in the messages log:

  usb 4-1: new full speed USB device using ohci_hcd and address 2
  usb 4-1: configuration #1 chosen from 1 choice
  usbcore: registered new interface driver usbserial
  USB Serial support registered for generic
  usbcore: registered new interface driver usbserial_generic
  usbserial: USB Serial Driver core
  USB Serial support registered for FTDI USB Serial Device
  ftdi_sio 4-1:1.0: FTDI USB Serial Device converter detected
  usb 4-1: Detected FT232RL
  usb 4-1: Number of endpoints 2
  usb 4-1: Endpoint 1 MaxPacketSize 64
  usb 4-1: Endpoint 2 MaxPacketSize 64
  usb 4-1: Setting MaxPacketSize 64
  usb 4-1: FTDI USB Serial Device converter now attached to ttyUSB0
  usbcore: registered new interface driver ftdi_sio
  ftdi_sio: v1.5.0:USB FTDI Serial Converters Driver

If I unplug the Arduino right away,  /dev/ttyUSB0 goes away, as it 
should.  So far, so good.

If, however, I leave the Arduino plugged in, about every 5 minutes I get 
this in the messages log:

modem-manager D 0000000000000000     0   929      1 0x00000000
  ffff8801ffc07cd8 0000000000000086 ffff8801f710c8a0 0000000000015880
  ffff880213b43110 0000000000015880 0000000000015880 0000000000015880
  0000000000015880 ffff880213b43110 0000000000015880 0000000000015880
Call Trace:
  [<ffffffff8139ec15>] usb_kill_urb+0x85/0xc0
  [<ffffffff81078b20>] ? autoremove_wake_function+0x0/0x40
  [<ffffffffa0bc7fc1>] ftdi_close+0x31/0x70 [ftdi_sio]
  [<ffffffffa0bb9909>] serial_down+0x69/0x80 [usbserial]
  [<ffffffffa0bb9c16>] serial_close+0x76/0xc0 [usbserial]
  [<ffffffff812f4319>] tty_release_dev+0x159/0x5f0
  [<ffffffff81130270>] ? pollwake+0x0/0x60
  [<ffffffff81427610>] ? sys_sendto+0x120/0x180
  [<ffffffff812f47c9>] tty_release+0x19/0x30
  [<ffffffff81120cd0>] __fput+0xf0/0x210
  [<ffffffff81120e0d>] fput+0x1d/0x30
  [<ffffffff8111cec8>] filp_close+0x58/0x90
  [<ffffffff8111cfb9>] sys_close+0xb9/0x110
  [<ffffffff81012002>] system_call_fastpath+0x16/0x1b


In either case, I can't actually *use* the Arduino - if I try to 
download a program to it, the download program (avrdude) will simply 
hang - very hard.  I can't even kill it from the command line.  Also, if 
I try "lsusb", that too will hang with no way to kill it.  Another, 
possibly unrelated, problem is that some time after that my Logitech 
PS/2 mouse will stop working.

Can anyone tell from the hieroglyphics that I've posted here where the 
problem is?

Thanks, David