[cups] How does CUPS find a driver?

Timothy Murphy gayleard at eircom.net
Sun Jun 12 01:27:12 PDT 2016


Brian Potkin wrote:

>> I'm trying to get a Canon MG5550 printer working with Fedora/KDE.
>> (It works perfectly under Windows 10.)
>> I've downloaded and installed Canon's Linux driver (in rpm format),
>> and told CUPS to use the .ppd file that comes with the Canon software.
>> Unfortunately this does not work.
>> 
>> But what puzzles me is that I see nothing in the .ppd file
>> directing the printer to the Canon driver.
>> So how does CUPS know which driver to use?

> Please post the output of
> 
>   grep -i cupsFilter <Canon_ppd>

[tim at william ~]$ grep -i cupsFilter 
  /usr/local/src/cnijfilter-source-4.00-1/ppd/canonmg5500.ppd
*cupsFilter: "application/vnd.cups-postscript 0 pstocanonij"
*cupsFilter: "application/vnd.cups-command 0 cmdtocanonij"

Thanks for the response.

-- 
Timothy Murphy  
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin





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