Dear Till:

Thanks for your reply. In the meantime I have been experimenting with the
bug, and I fixed it myself---I'm curious to see whether the upgrades you
point to will also fix the problem, and I will let you know.

At any rate, calling my printer 'cp', I compared the two cp.ppd's generated
one by Ubuntu 8.04 and the other by Ubuntu 8.10. Using the old one on the new
system fixed the "loss of double-sided printing" problem. After some
block-by-block and line-by-line replacements of old by new, it seems that the
only offending line in the new .ppd is in the header block (line 12 of actual
code), namely,

  *cupsFilter:  "application/vnd.cups-pdf 0 foomatic-rip"

Commenting out this line, as in

  *%cupsFilter: "application/vnd.cups-pdf 0 foomatic-rip"

in the 8.10 vintage .cpp is enough to fix the problem (whatever the
reason).

Thanks for your assistance, and best to everybody on launchpad.

                                                Tom Toffoli
----------------------------------------------------------------
        Tommaso Toffoli               [email protected] | 
        Research Prof.          pm1.bu.edu/~tt  | home:
        Boston University          617/353-9846 | 617/864-8545
        ECE Department        8 Saint Mary's St | 26 Athens St
                                      Boston MA | Cambridge MA

-- 
duplex printing through CUPS no longer works
https://bugs.launchpad.net/bugs/308817
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