[cups-devel] FYI: duplex not working ("Transport endpoint is not connected")
Martin Vogt
martin.vogt at itwm.fraunhofer.de
Fri Jan 12 06:51:54 PST 2018
Hello,
this is a follow up to an older thread:
https://lists.cups.org/pipermail/cups/2016-January/027429.html
https://lists.cups.org/pipermail/cups/2016-February/027491.html
With a new cups server and RHEL7 clients
the problem above was still present.
- in google-chrome (cannot print in color, no ppds)
- QT/KDE 4.x (slow startup time, no ppds)
The solution was to configure on the cups server NOT
- ipp://mfp6030.printer.domain.com:631
but
- socket://mfp6030.printer.domain.com:9100
with this the client does not:
- tries to connect the printer directly
- does not run into a network problem (timeout)
==> problem solved.
Additionally the qt/chrome client somehow gets a working ppd and
works as expected.
In short: Don't use ipp:// to print from the server to an
internal printer, only use socket://.
Is this a bug?
Maybe in Qt/chrome?
regards,
Martin
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