powertop doesn't display frequency statistics

Bug #878872 reported by Jason Frost on 2011-10-20
This bug affects 8 people
Affects Status Importance Assigned to Milestone
powertop (Ubuntu)

Bug Description

Ubuntu Release: 11.10
Powertop Version: 1.97-2

After installing Ubuntu 11.10, I installed powertop so I could check the power usage of my laptop, and I found that under "Frequency stats", all percentages are at 0% instead of actually showing what percentage of time the processor was running at the listed frequencies

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in powertop (Ubuntu):
status: New → Confirmed

Confirmed for 12.04.

Also note, that not all frequencies are displayed. For me, "turbo mode" and "2.21 GHz" to "1300 MHz" are displayed, but the cpu is running at 800 MHz, which is the lowest one available. Thus, the percentages which _are_ displayed are probably correct.

See also #911387

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