To display /var/log/syslog, open it with an editor, or run

less /var/log/syslog

Then search for "audit" lines in the file.

If you run

grep audit /var/log/syslog

only the "audit" lines are displayed. Please post these lines here.

For the second part, run

sudo apt-get install apparmor-utils

and after that

cancel -a
sudo aa-complain cupsd

Try to print again. Does it work now?

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https://bugs.launchpad.net/bugs/1475921

Title:
  Hp printer recognized,connected,and set at lpt0 on a parallel port
  just can not print

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