Installing Driver
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3. Installing Canon MF249dw DriverNext to Install Canon i-SENSYS CQue Ubuntu Driver 
 First, access the Download location by default with:cd ~/Downloads To Check it’s there List the contents with: ls . | grep CQue The grep Command refine the output List showing only the Entries matching the Keyword. 
 But if you are in Trouble to Find it out on Terminal then See: How to Access Downloads Folder from Browser.
 So now to Setup it play:sudo apt install ./CQue*.deb But in case of Issue, to Install the Alternative Software see: How to Install UFR II Driver on Ubuntu. Again to Install/Update CUPS 
 Also if it should be already in place by Default:sudo apt install cups Last, eventually to Run CUPS Service: sudo service cups start 
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