I recently purchased a Pixma TS 705 printer & am using it via USB in Ubuntu 19.04 with Canon driver from cnijfilter2-5.80-1-deb.tar.gz.
Generally it is working well.
But I am only able to load paper from the front cassette & not from the rear tray. In the print control window, under the tab "Page Setup", the item "Paper source" says "Not available" & is greyed out & cannot be used.
It works OK in W10...
Thank you for any suggestions!