problem with usb printer

Hans Petter Selasky hselasky at c2i.net
Sun Mar 15 01:36:21 PDT 2009


On Sunday 15 March 2009, Alexander Best wrote:
> i recompiled my kernel with the p4-files, but still nothing get's printed.
>
> this is what i get when attaching the device:
>
> ugen0.3: <Samsung Electronics Co., Ltd.> at usbus0
> ulpt_probe:472:
> ulpt_attach:498: sc=0xc5a4c900
> ulpt0: <Samsung Electronics Co., Ltd. Samsung ML-1510_700, class 0/0, rev
> 1.10/1.00, addr 3> on usbus0
> ulpt_attach:538: setting alternate config number: 0
> ulpt0: using bi-directional mode
>
> and this when i try to print something:
>
> ulpt_reset:164:
> ulpt_write_callback:203: state=0x0
> ulpt_write_callback:203: state=0x1
> ulpt_write_callback:203: state=0x1

Looks good.

Try also:

sysctl hw.usb2.dev.debug=15

While printing and see if there is a drain in the end!

>
> i also enabled debugging output in the cups config file, but that didn't
> reveal any errors.
>
> right now i'm trying to build a kernel with the old usb stack to see if the
> problem get's solved. if the problem then still exists cups must be causing
> the problems. unfortunately building the kernel with the old usb stack
> fails:

Did it work before?

The only thing I can imagine is that the flushing/drain mechanism is not 
working, after that the last byte has been written.

--HPS


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