I recently upgraded ubuntu from 16.04 to 18.04. I am trying to get my canon printer going again. I have it installed and when I print, it says 'printing', then 'printing complete', but doesn't print. Then I get Problem detected pop up with cancel/report option. In my var/crash folder I have a file named cnijlgmon3.7.crash. I cannot delete the crash file, but obviously it is a canon driver file with cnij at beginning. Wondering where to go from here.
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"E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)" This is a common problem when Ubuntu is checking for updates while attempting to use apt in a terminal. Check out this previous question for more info E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
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