El día Sunday, June 01, 2014 a las 08:09:19PM +0200, Hans Petter Selasky 
escribió:

> Try compiling the ulpt module with USB_DEBUG set:
> 
> ee /sys/modules/usb/ulpt/Makefile
> 
> ADD:
> 
> CFLAGS+= -DUSB_DEBUG
> 
> Rebuild and install the module.
> 
> Set hw.usb.ulpt.debug=15

Here it goes:

# sysctl hw.usb.ulpt.debug=15
hw.usb.ulpt.debug: 0 -> 15

(now attaching the USB cable)

# tail -f /var/log/messages
Jun  2 16:57:59 La-Habana kernel: ugen1.2: <Prlific Technology Inc.> at usbus1
Jun  2 16:57:59 La-Habana kernel: ulpt_probe: 
Jun  2 16:57:59 La-Habana kernel: ulpt_probe: 
Jun  2 16:57:59 La-Habana kernel: ulpt_attach: sc=0xc5833700
Jun  2 16:57:59 La-Habana kernel: ulpt0: <Prlific Technology Inc.  IEEE-1284 
Controller, class 0/0, rev 1.00/2.00, addr 2> on usbus1
Jun  2 16:57:59 La-Habana kernel: ulpt_attach: setting alternate config number: 
1
Jun  2 16:57:59 La-Habana kernel: ulpt0: using bi-directional mode
Jun  2 16:58:00 La-Habana kernel: ulpt_status_callback: error=USB_ERR_TIMEOUT
Jun  2 16:58:29 La-Habana last message repeated 22 times

(now doing in anaother session 'date > /dev/unlpt0')

Jun  2 16:58:30 La-Habana su: guru to root on /dev/pts/1
Jun  2 16:58:30 La-Habana kernel: ulpt_status_callback: error=USB_ERR_TIMEOUT
Jun  2 16:58:41 La-Habana last message repeated 7 times
Jun  2 16:58:42 La-Habana kernel: ulpt_write_callback: state=0x0 actlen=0
Jun  2 16:58:42 La-Habana kernel: ulpt_status_callback: error=USB_ERR_TIMEOUT

Thanks

        matthias
-- 
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