[cups] Trying to work around Canon MF743cdw driver bugs on MacOS Catalina

[Brian Demsky]

I found an interesting potential direction.  If I hack PPD file to just dump the raw pdf to the printer, it prints correctly.  So I guess the Canon printer actually supports pdf natively despite that this is not an advertised feature.

The only issue is that it looks like all the options are controlled by the Canon cgpdftopdl file.  In particular, I would like to have the option to print in black and white instead of color.  Any suggestions?

Brian

> On May 16, 2020, at 1:16 AM, andrew cook <AndrewCookframes at hotmail.com> wrote:
> 
> I got rid of my Canon printer, I swapped to hp. If you follow Caroline dunns video on YouTube, it works fine
> 
> Sent from Outlook Mobile<https://aka.ms/blhgte>
> 
> ________________________________
> From: Helge Blischke <helgeblischke at web.de>
> Sent: Friday, May 15, 2020 11:36:37 PM
> To: The CUPS user discussion list. <cups at cups.org>
> Subject: Re: [cups] Trying to work around Canon MF743cdw driver bugs on MacOS Catalina
> 
> 
> 
>> Am 15.05.2020 um 23:55 schrieb Brian Demsky <bdemsky at gmail.com>:
>> 
>> Different issue.   Below is all the output (on both stdout and stderr).  If I look at the cups logging during normal printing of the same file, it passes a ton of options into the capdftopdl and has a much longer environmental variable setup.
>> 
>> cupsfilter -P /etc/cups/ppd/Canon_MF741C_743C__cb_df_25___25___cb_df_25___2___cb_df_25___2_.ppd -m printer/foo -e oopsla2019-lapor.pdf &> log
>> 
>> Brian
>> 
>> cupsfilter: File <E2><80><9C>/Library/Printers/Canon/CUPS_Printer/Bins/capdftopdl<E2><80><9D> permissions OK
>> (040755/uid=0/gid=80).
>> cupsfilter: File <E2><80><9C>/Library/Printers/Canon/CUPS_Printer/Bins/commandfilefilter<E2><80><9D> permissi
>> ons OK (040755/uid=0/gid=80).
>> DEBUG: argv[0]="cupsfilter"
>> DEBUG: argv[1]="1"
>> DEBUG: argv[2]="root"
>> DEBUG: argv[3]="oopsla2019-lapor.pdf"
>> DEBUG: argv[4]="1"
>> DEBUG: argv[5]=""
>> DEBUG: argv[6]="oopsla2019-lapor.pdf"
>> DEBUG: envp[0]="<CFProcessPath>"
>> DEBUG: envp[1]="CONTENT_TYPE=application/pdf"
>> DEBUG: envp[2]="CUPS_DATADIR=/usr/share/cups"
>> DEBUG: envp[3]="CUPS_FONTPATH=/usr/share/cups/fonts"
>> DEBUG: envp[4]="CUPS_SERVERBIN=/usr/libexec/cups"
>> DEBUG: envp[5]="CUPS_SERVERROOT=/private/etc/cups"
>> DEBUG: envp[6]="LANG=en_US.UTF8"
>> DEBUG: envp[7]="PATH=/usr/libexec/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
>> DEBUG: envp[8]="PPD=/etc/cups/ppd/Canon_MF741C_743C__cb_df_25___25___cb_df_25___2___cb_df_25___2_.ppd"
>> DEBUG: envp[9]="PRINTER_INFO=cupsfilter"
>> DEBUG: envp[10]="PRINTER_LOCATION=Unknown"
>> DEBUG: envp[11]="PRINTER=cupsfilter"
>> DEBUG: envp[12]="RIP_MAX_CACHE=128m"
>> DEBUG: envp[13]="USER=root"
>> DEBUG: envp[14]="CHARSET=utf-8"
>> INFO: /Library/Printers/Canon/CUPS_Printer/Bins/capdftopdl (PID 6463) started.
>> DEBUG: capdftopdl start.
>> ERROR: /Library/Printers/Canon/CUPS_Printer/Bins/capdftopdl (PID 6463) stopped with status 1
>> 
> That’s strange. What about the file "log“? Is it empty?
> Anyway, I think I need to install the Canon driver package and really set up a fake printer to analyse the final output.
> Please send mt the input PDF so that we both deal with the same issue.
> 
> Helge
> 
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