[lttng-dev] No kernel tracer available

[Francis Rivest]

Hello, I'm a student at Polytechnique Montreal and we are trying to use
lttng on ubuntu(Ubuntu 14.04.2 LTS) but always encounter the same problem :

"Error: Unable to list kernel events: Kernel tracer not available"

This happens even though we are root using the command line : sudo su

We reinstalled the packages multiples time for lttng.org and from this
source : https://launchpad.net/~lttng/+archive/ubuntu/ppa/

We are able to create a session but we can't enable event (kernel tracer
not available) or start tracing (error : no channel found).

If someone has advice on how to deal we this, it would be appreciated a lot.

Thank you,

-Francis R.
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