Hello,I am experiencing an issue with my Canon MF643Cdw printer on macOS Tahoe. The printer connected and printing correctly, however the macOS print dialog does not show any option for enabling/disabling 2-sided (duplex) print
What I have already checked and tested:
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AirPrint and IPP are enabled on the printer
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Bonjour/mDNS discovery works correctly
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The printer appears properly in macOS and CUPS
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Printing works successfully
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The printer’s web UI has 2-sided printing enabled
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Duplex support exists in the driver (duplex2/2-Sided Printing: none DuplexNoTumble DuplexTumble)
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I can manually enable duplex through terminal using:
lpoptions -p PRINTER_NAME -o duplex2=DuplexNoTumble
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However, the macOS print UI still does not show any duplex/2-sided printing option anywhere
Things I already tried:
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Removed and re-added printer multiple times
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Added printer via Bonjour, IPP, and socket://IP methods
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Installed latest Canon drivers
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Completely removed Canon drivers and reinstalled
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Tried adding printer with Canon driver instead of AirPrint/IPP Everywhere
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Reset CUPS and macOS printing system
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Cleared printer caches and PPD files
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Tested from Preview/TextEdit
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Checked all print dialog sections (Layout, Printer Features, Finishing, etc.)
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Verified duplex settings through CUPS
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Rebooted printer and Mac multiple times
The issue appears to be specifically related to the Canon driver UI on macOS Tahoe, because duplex functionality technically works through terminal commands, but the graphical print interface does not expose the option.
Could you please advise if this is a known compatibility issue with macOS Tahoe or if there is an updated UFR II driver/plugin available?
Thank you.
