[cups.general] Printer refusing to duplex

[Helge Blischke]

Michael Sweet wrote:
> 
> Mac Mason wrote:
> > So, I've got a printer with a duplexer; however, running
> >
> > lp -o sides=two-sided-long-edge <file> (as root)
> >
> > results in non-duplexed output (in my test case, it producs two
> > single-sided pages, not one two-sided page)
> >
> > Thinking it might help, I used lpoptions (again, as root) to automate duplexing,and now lpoptions produces the following output:
> >
> > job-sheets=none,none sides=two-sided-long-edge
> >
> > Anybody got any ideas?
> 
> What does "lpoptions -d printer -l" show?
> 


Hint: This command shows the defaults defined in the printer's PPD, as
configured
by lpadmin or the web interface. Look into the output if there is
something like
	Option3/Duplexer: *True False
(in this case the PPD tells the duplexder _is_ installed). Many printers
treat
things like duplexer as installable options, so the spooling system -
CUPS - must
be told it the printer has one or not.

Helge

-- 
H.Blischke at srz-berlin.de
H.Blischke at srz-berlin.com
H.Blischke at acm.org