LTTng

This may be a user issue, but I spent most of sunday trying to get this to work.

Computer:
Intel core2 duo 5200 + 2 gb ram.
Distro: Ubuntu 14.04 lts (64 bit)
kernel 3.16

I've tried getting it to work with Ubuntu's default 2.4 kernel modules. I ended up with a black screen.
I've tried with the stable ppa version, it generates empty traces.
I've tried with the nightly ppa, it says "kernel abi is 2.0, expected 1.*"
I've tried from git head, I get a black screen, approximatively seconds later I see a call stack with "error cpu froze for 20 seconds"

Cyclical test location:

git clone git://git.kernel.org/pub/scm/linux/kernel/git/clrkwllms/rt-tests.git

Here is the script I ran

#/bin/bash

lttng create cyctest-1-core
lttng enable-event -a -k
lttng start
sudo ./cyclictest -a 1 -l 1000
lttng stop
lttng destroy
lttng create cyctest-2-core
lttng enable-event -a -k
lttng start
sudo ./cyclictest -l 1000
lttng stop
lttng destroy