[cups] How does CUPS find a driver?

[Brian Potkin]

On Fri 10 Jun 2016 at 23:40:33 +0100, Timothy Murphy 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>

Regards,

Brian.