Fwd: USB to parallel for printer HP LaserJet 4mL

[Hans Petter Selasky]

On 06/02/14 17:08, Matthias Apitz wrote:
> 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
>

Hi,

TIMEOUT means the device is not receiving any data. Can you confirm that 
the device is still working using other computers?

Did you dump the complete device and configuration descriptor?

--HPS