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Pixma MX922 and OS X Catalina


I've had my Multifunction for a while and am using with with the Canon scanning software on my Macbook Air running OS X Catalina 10.15.4.


Since the update to Catalina, I have noticed that if I scan a document, then change the settings for another document, when I click on the scan button, nothing happens.  I have to quit the application and then scan.  The changes to the settings were saved with the last running of the App, I just couldn't scan until I quit.


Any suggestions?





What we hear from a lot of MAC users:


Printer has been working fine / normally, then after one or more OS upgrades some functions start to become problematic, unreliable or deteriorate.


This is often due to the architectural differences between old / new versions of Mac OS and drivers.  If you've been using MAC OS for a while, then you know how different Catalina is in comparison to Mojave.    


What I would recommend:


Remove the printer from Apple menu > System Preferences > Printers and Scanners.


If no other printers are installed, then "Reset The Printing System" (Control+Right-Click)


Now uninstall all Canon related software, then restart.


Now reinstall the device using the Catalina CUPS and Scanner drivers:


This seems to help in the majority of cases where orphaned files and lingering remnants cause odd or undesired behaviors.

Bay Area - CA

~R5 C ( ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10

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Thank you for your suggestion.  I will try it.


Nice to meet someone with more than 1900 times my experience on the "Boards."



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