(Actually, the issue of Canon printer pops up in this forum now and then and they are too many to enumerate).
Anyway, so far as my experience goes in the last two years, there has never been a definite diagnostic process chalked out. See also this question.
Yesterday, I had an strange experience which though may seem far fetched, I feel it necessary to report here since it may be useful to others. Moreover, I want to understand what really happened here.
Last night, in the late hours, my Canon LBP6000 suddenly stopped printing. None of the empirical practices undertaken worked.
Then I started thinking about the recent changes made so far in my machine. The only one I could find is installing a cups pdf printer. Out of desperation, I removed this printer (
apt-get purge), rebooted my machine, and the Canon printer started working again.
Now, the question is, do you really think there is a connection between the pdf printer and the Canon printer where the former may make the latter stop printing? Any technical details which can be included in the answer may become helpful to the frustrated community of Canon printer owners under Linux.
I have tested by re-adding the
cups-pdf printer, and the results look inconclusive.