Trying for a duplex printer

[Chuck Robey]

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Joakim Fogelberg wrote:
> On Tue, May 6, 2008 at 6:43 PM, Chuck Robey <chuckr at chuckr.org> wrote:
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>>  I have been scouring all the data I can, to find printers that do duplex
>>  printing (that means doublesided printing).  I found 3 models, but two of them
>>  (the HP C7280 and the Canon PIXMA MX850) have no public drivers I can find.  The
>>  third, which is the Epson RX680, seems to be supported via drivers from Avasys
>>  (http://avasys.jp/hp/menu000000900/hpg000000859.htm) called PIPS drivers, but
>>  while there is are ports for various versions of PIPS in the print dir of ports,
>>  and I can find that the Avasys site lists supporting the RX680, I have two problems:
>>
>>  1) I can't determine which (if any) of the PIPS ports support the RX680, and
>>  2) right now, none of them build because of an error you get about a
>>    linuxwrapper not handling symbol versioning.
>>
>>  Is there any way to rely on any FreeBSD port to be able to use the RX680 from
>>  Epson?
> 
> Have you tried print/gutenprint ?
> 

No ... I know how to do a minimal test with gs (just use the gs flags to convert
a postscript file to a printer-native file, then (as root) copy it over to the
printer's port in /dev).  Do you know how to do that in gutenprint?  There isn't
any man page for it.

Besides that, I think that the usb interface must have some bug in it.  At every
attempted copy to /dev/ulpt0, it always fails to print, just tossing this error:

Cannot open /dev/ulpt0 read/write: Device busy

That happens even if I have powered down the printer for a minute, then
restarting it.  I know that's the correct device by reading /var/log/messages:

May  8 12:02:01 april kernel: ulpt0: <EPSON USB Printer, class 0/0, rev
1.10/1.00, addr 3> on uhub0
May  8 12:02:01 april kernel: ulpt0: using bi-directional mode
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