Till,
system-config-printer version 1.3.8 works
version 1.5.6 does not work.
My impression is that the command file generated in printerproperties.py
using
with tempfile.NamedTemporaryFile(mode='wt') as tmpfile:
tmpfile.write ("#CUPS-COMMAND\n%s\n" % command)
has a size of zero bytes when the job is submitted to cups
maybe due to buffering?
in the older working version 1.3.8 the command file is generated using
(tmpfd, tmpfname) = tempfile.mkstemp ()
os.write (tmpfd, "#CUPS-COMMAND\n%s\n" % command)
os.close (tmpfd)
Paul
On 29/09/15 01:27, Till Kamppeter wrote:
> Paul, which printer are you using? Does it actually support the
> functionality you are requesting? The "Print Self Test Page" is intended
> for printers which have a built in self test page (usually to discover
> clogged nozzles) and the driver is supposed to send a special code
> sequence to the printer to make the printer print this test page (not
> send a test page from the computer to the printer). "Clean Heads" is
> supposed to tell the printer to run its internal cleaning cycle.
>
> Unfortunately, the buttons sometimes appear in the Properties dialog of
> system-config-printer if the printer does not have the mentioned
> functionality, for example with the virtual "PDF" printer which gets
> created when installing the cups-pdf package (there are really no print
> heads to clean).
>
> Or are you developing printer maintenance support for your Kodak driver?
>
> ** Changed in: system-config-printer (Ubuntu)
> Status: New => Incomplete
>
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https://bugs.launchpad.net/bugs/1500636
Title:
commands passed to cups fail. File missing
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