It appears that resource limits (which include the maximum size of a core dump file) are set by PAM on login. The settings for these limits are in /etc/security/limits.conf, which on my system (which is unmodified) is comments only. A quick look at the source code suggests that the default core dump limit is 0 (zero), which means no dump at all is created (even though the message suggests otherwise).
In summary: edit /etc/security/limits.conf, set the core limit to be non-zero (measured in kilobytes), and log in again.
I hope that works!
Sunday, October 28, 2007
Ubuntu - core dump
From https://answers.launchpad.net/ubuntu/+question/10616
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