Comment 2 for bug 527176

First, I'm sorry but I only speak English. I hope you will be able to translate the following as necessary.

Please install the kernel at http://people.canonical.com/~cndougla/sched_trace/. Reboot into it, then do the following:

# echo function >/sys/kernel/debug/tracing/current_tracer
# ech0 1 >/sys/kernel/debug/tracing/options/latency-format
# echo 1 >/sys/kernel/debug/tracing/tracing_enabled

Then do whatever you need to trigger the issue. If you don't know how to trigger the issue, you can continue using the computer until the bug is triggered, but it may run a little slower. Once the bug has been triggered, do:

# cat /sys/kernel/debug/tracing/trace | bzip2 >/tmp/trace.bz2

Finally, attach the trace.bz2 file to this bug so we can take a look.

Thanks