How to print from Arch Linux via Wi-Fi to Canon MG6450?

I have a Canon MG6450 with Wi-Fi enabled and an up-to-date Arch Linux installation with cnijfilter-mg4200 3.80-1 installed . I can *see* the printer in print dialogues (sometimes it takes a second to show up, presumably because it's being auto-discovered), I can select it, and I get no error message when clicking OK. However, the printer is completely oblivious to all this, it seems. I've also tried connecting via USB. Afterwards the printer was *not* auto-detected by the print dialogue, but it *was* detected by system-config-printer, and I was able to configure and print with no problems. But it would be very nice to be able to print wirelessly. --- It appears some fatal printing errors show up neither in the print dialogue nor in system-config-printer. Both of them simply report printer state as "Idle - Rendering completed". However, after going to the CUPS web interface and clicking the printer I finally got a hint - after each print job is the following message: > "The PPD version (5.2.11) is not compatible with Gutenprint 5.2.12. Please run `/usr/bin/cups-genppdupdate' as administrator." OK then: $ sudo /usr/bin/cups-genppdupdate /etc/cups/ppd/Canon-PIXMA-MG6450.ppd: no valid candidate for replacement. Skipping /etc/cups/ppd/Canon-PIXMA-MG6450.ppd: please upgrade this PPD manually Unable to retrieve PPD file for /etc/cups/ppd/Canon-PIXMA-MG6450.ppd! Failed to update any PPD files Now I'm seeing if anywhere has a compatible PPD. Canon's IJ Printer Driver Ver. 4.00 for Linux has PPD files for MG6400 and MG6500. I tried the MG6400 one, cleaned out the printer queue, and tried printing a test page. Now the CUPS web interface has no errors, but system-config-printer reports: > File "/usr/lib/cups/filter/pstocanonij" not available: No such file or directory Looks like that file is available from cnijfilter-common , which currently can't be built . After following the instructions by c.gerhorst I have installed the package, but now the printer dialogue is complaining that /usr/lib/cups/filter/cmdtocanonij is missing. --- There *is* a /usr/lib/cups/filter/commandtocanon. I've tried replacing cmdtocanonij with commandtocanon in /etc/cups/ppd/Canon-PIXMA-MG6450.ppd and running sudo systemctl daemon-reload and sudo systemctl restart org.cups.cupsd.service. Now I get no error message anywhere, but the print jobs just seem to disappear entirely. The printer shows no sign of receiving them, and the CUPS web interface shows any new jobs as first "processing", then "completed", without any indication that something is black-holing everything.