Konica-Minolta 4750en crashed using CUPS 1.52 but not 1.50

[Mark Blades]

> Mark Blades wrote:
>
> >> Mark Blades wrote:
> >>
> >> >> Mark Blades wrote:
> >> >>
> >> >> > Hi
> >> >> >
> >> >> > I just updates my Ubuntu desktop to 12.04 (fresh install rather than
> >> >> > upgrade).  ON reinstalling my printers from the cups web interface I
> >> >> > found that the 4750en although found and installed by CUPS using the
> >> >> > same ppd file (from K-M support site) any job sent to the printer
> >> >> > from cups 1.52 hangs the printer (flashing processing light and the
> >> >> > printers web
> >> >> > interface becomes unreachable).  I have tried installing as a
> >> >> > jet/direct
> >> >> > or ipp printer to no avail.  Also tried installing via USB with the
> >> >> > smae results.
> >> >> >
> >> >> > I have a laptop with cups 1.50 (on ubuntu 11.10) installed and this
> >> >> > prints fine over ethernet using either jet/direct or ipp protocols.
> >> >> >
> >> >> > I am currently trying to find a way to print to file from the 2 cups
> >> >> > versions so that I can compare the PS output for any clues but can't
> >> >> > see a way to do that? If the problem is malformed postscript can I
> >> >> > send a .pdf to the printer from the shell to bypass the interpreter?
> >> >> >
> >> >> > any help much appreciated
> >> >> >
> >> >> > Mark
> >> >>
> >> >> To save the final data sent to the printer, you may do the following:
> >> >> (1) shut down cups
> >> >> (2) save the file /etc/cups/printers.conf for safety
> >> >> (3) for the printer in question, change the DeviceURI line to
> >> >>     DeviceURI file:///absolute_path_to_destination_file
> >> >> (4) make the directory where the destination file should be written to
> >> >>     world wrietable
> >> >> (5) start cups
> >> >> (6) make a test print using the same source that caused the problem
> >> >> (7) shut down cups
> >> >> (8) restore the original DeviceURI for the printer in question in
> >> >>     /etc/cups/printers.conf
> >> >> (9) start cups
> >> >> (10) post (an URL to) the saved sample files.
> >> >>
> >> >> Note that steps 2,3, and 8 must be done as root (or via sudo command).
> >> >>
> >> >> Helge
> >> >>
> >> >>
> >> >
> >> > Hmm, Thought I posted a reply to you but I'll try again.
> >> >
> >> > Thanks for the instructions.  The output from cups 1.50, cups 1.52 &
> >> > the .odt file used to create the output are at the following url.
> >> >
> >> > https://sites.google.com/site/kmcupstest/
> >> >
> >> > thanks in advance
> >> >
> >> > Mark
> >>
> >> I modified the cups1-52_fail.txt by decompessing the compressed prologue
> >> part of the file, as my suspicion is that the printer's PS interpreter
> >> cannot execute LZW (de)compression, as for a long time there was some
> >> uncertainty about the LZW decompression (as the compression was covered
> >> by a patent until, I think, 2000 or so).
> >> Please download the file from this URL:
> >>
> >> http://www.file-upload.net/download-4322578/cups1-52_t1.ps.html
> >>
> >> and feed it to your printer as a raw job with the command
> >>
> >> lp -d your_printer -o raw cups1-52_t1.ps
> >>
> >> and let me know if it works.
> >>
> >> Helge
> >>
> >>
> >>
> > Hi,
> >
> > Feeding the printer the raw file had the same effect as printing from
> > office. the printer hangs on processing the file and cups reports the job
> > as complete. I also tried using the same command with the 1-50-success
> > file and this printed out OK.
> >
> > thanks again
>
> And what about the nest test:
>
> http://www.file-upload.net/download-4322677/cups1-52_t2.ps.html
>
> Helge
>

This also hangs the printer :(