Comment 37 for bug 834725

It appears that there are some system files that are not present. Powertop is looking for the following files and not finding them:

"/sys/kernel/debug/tracing/events/power/power_frequency/id"
"/sys/kernel/debug/tracing/events/power/power_frequency/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_start/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/power/power_end/id"
"/sys/kernel/debug/tracing/events/i915/i915_gem_request_submit/id"
"/sys/kernel/debug/tracing/events/i915/i915_gem_request_submit/id"
"/sys/kernel/debug/tracing/events/writeback/writeback_inode_dirty/id"
"/sys/kernel/debug/tracing/events/writeback/writeback_inode_dirty/id"

Incidentally, the following 'id' files are present:
root@Laptop1:/sys/kernel/debug/tracing/events/power# find . -name id -print
./cpu_idle/id
./cpu_frequency/id
./machine_suspend/id
./clock_enable/id
./clock_disable/id
./clock_set_rate/id
./power_domain_target/id

This is using version 1.9.7 on an older HP laptop.

--J