[8-STABLE] USB printer disconnecting when trying to print

[Thomas Gellekum]

Moin,

my new machine doesn't have a physical connector for a parallel printer
anymore, so I'm now connecting my Brother HL-1250 through the USB port.
The printer is recognized when it powers up:

ugen0.4: <vendor 0x04f9> at usbus0
ulpt0: <vendor 0x04f9 product 0x0007, class 0/0, rev 1.00/1.00, addr 4> on usbus0
ulpt0: using bi-directional mode

and it starts warming up when I try to print, but no page is coming out.
After setting hw.usb.debug.ulpt=1, hw.usb.debug.ugen=1, I do a

echo "hallo" > /dev/ulpt0

and get lots of lines starting with the same usbd_transfer_submit shown
below (are these actually related to the printer? I'm guessing they are
mouse events):

May 21 10:17:23 siegel kernel: usbd_transfer_submit: xfer=0xc9c70220, endpoint=0xc7ab3878, nframes=2, dir=read
May 21 10:17:23 siegel kernel: usb_dump_endpoint: endpoint=0xc7ab3878 edesc=0xc7ab3b30 isoc_next=0 toggle_next=0 bEndpointAddress=0x00
May 21 10:17:23 siegel kernel: usb_dump_queue: endpoint=0xc7ab3878 xfer: 
May 21 10:17:23 siegel kernel: usbd_pipe_enter: enter
May 21 10:17:23 siegel kernel: usbd_pipe_start: start
May 21 10:17:23 siegel kernel: usbd_transfer_done: err=USB_ERR_NORMAL_COMPLETION
May 21 10:17:23 siegel kernel: usbd_callback_wrapper_sub: xfer=0xc9c70220 endpoint=0xc7ab3878 sts=0 alen=9, slen=9, afrm=2, nfrm=2
May 21 10:17:37 siegel kernel: ulpt_write_callback: state=0x0 actlen=0
May 21 10:17:37 siegel kernel: ulpt_status_callback: error=USB_ERR_STALLED
May 21 10:17:37 siegel kernel: ugen0.4: <vendor 0x04f9> at usbus0 (disconnected)

[terminate command with ^C]

May 21 10:20:22 siegel kernel: ulpt0: at uhub2, port 2, addr 4 (disconnected)
May 21 10:20:22 siegel kernel: ulpt_detach: sc=0xca008b00
May 21 10:20:22 siegel kernel: ulpt_write_callback: state=0x2 actlen=0
May 21 10:20:23 siegel kernel: ugen0.4: <vendor 0x04f9> at usbus0
May 21 10:20:23 siegel kernel: ulpt0: <vendor 0x04f9 product 0x0007, class 0/0, rev 1.00/1.00, addr 4> on usbus0
May 21 10:20:23 siegel kernel: ulpt_attach: setting alternate config number: 0
May 21 10:20:23 siegel kernel: ulpt0: using bi-directional mode

I've also tried to set up CUPS instead of using LPD, but that doesn't
even find the printer.

The board is an Intel DH55HC with a i3-530; system is a recent 8-STABLE
(see attached dmesg).

Any ideas on how to debug this are welcome.

tg

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