Just installed clean 20.04. Canon's MX490 Scanner works great but I cant print.. I reinstalled the printer with the same problem. The printer works fine through WiFi.
Thanks for your help.
Ruben
I have had a similar problem, albeit with a Pixma mp230
Try this simple solution, which I found on distrowatch.com' s user rating page of Ubuntu 20.04 (the review dated 2020-08-19):
sudo apt remove ippusbxd
in terminal)The proposed theory behind it is that ippusbxd "creates" a "ubuntu"-printer which interferes with the original printer/printer drivers (in the reviewer's case a Brothers printer, in my case a Canon Pixma mp230).
I am incredibly thankful to the original problemsolver for this simple solution and thought I would pay it forward here, where more people might see it.