Hello,
[Yesterday CURRENT/i386]
I've got some troubles with unlpt, most of the time I can't print and I

must stop cupsd, kill -9 the process usb, and unplug the USB printer.

Then it works again for some time (but mostly one time).
The printer is a Brother HL-1430 (working fine under FreeBSD since

FreeBSD 4.X)
ulpt0:  on usbus0

ulpt_attach:562: setting alternate config number: 0

ulpt0: using bi-directional mode
With hw.usb.ulpt.debug=1, I've got a lot of:
ulpt_write_callback:204: state=0x0 actlen=0

ulpt_status_callback:328: error=USB_ERR_IOERROR

last message repeated 31 times

last message repeated 78 times

...
When it works:

ulpt_write_callback:220: state=0x0 actlen=0

ulpt_write_callback:220: state=0x1 actlen=2889

ulpt_write_callback:220: state=0x1 actlen=3023

...
Thanks in advance, regards.

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