[coldsync-hackers] Re: Can't open USB device with Palm Zire

[Marc Tardif <marc at interunion dot ca>]

* Christophe Beauregard <christophe.beauregard@sympatico.ca> [2006-02-06 19:33 -0500]:
> On Monday 06 February 2006 17:22, Marc Tardif wrote:
> 
> >   # coldsync -p /dev/ttyUSB1 -t libusb -v -v -v -mI
> >   Please press the HotSync button.
> >   pconn_libusb_open: Can't open USB device.
> >   Error: Can't open connection.
> >
> > coldsync is installed from coldsync_3.0.pre4.cvs20040225-1_i386.deb on
> > Debian Sarge. This is the actual version information:
> 
> I didn't have much luck with libusb under Debian. Try "-t net" instead.

When I use that option, nothing is ever displayed:

  # coldsync -p /dev/ttyUSB1 -t net -v -v -v -mI

Then nothing, it just stalls forever.

> The other thing to keep in mind is the specific USB port may move around 
> (okay, or maybe VIA just makes lousy USB chipsets). Two syncs in a row may 
> get completely different ports. The USB hotplugging stuff (described in 
> README.usb in the CVS version) takes away that guesswork if you're running 
> in daemon mode.

This is the output I get from dmesg when attempting to sync my Palm:

  usb 2-1: new full speed USB device using uhci_hcd and address 4
  visor 2-1:1.0: Handspring Visor / Palm OS converter detected
  usb 2-1: Handspring Visor / Palm OS converter now attached to ttyUSB0
  usb 2-1: Handspring Visor / Palm OS converter now attached to ttyUSB1
  usb 2-1: USB disconnect, address 4

So, I tried specifying the port ttyUSB0 and then I tried ttyUSB1. In
both cases, I always get the same results as before:

  1. When specifying "-t libusb", I get: Can't open connection.
  2. When specifying "-t net", I stall forever.

Please let me know how I can diagnose this problem further. For example,
would it be helpful to run something like strace? Or would it be
possible that my Palm Zire is simply not supported?

-- 
Marc Tardif