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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 02-18-2013, 02:48 PM   #1
cylent77
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Registered: Jan 2007
Posts: 13

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powertop doesnt show watts


This is related to powertop...

my problem seemed like maybe i forgot to issue an option during start of the powertop utility.
the problem is powertop doesn't show "watts" usage. it shows percentage.

I've tried different laptops all with the same results.. powertop simply doesnt show me watts usage.

pls help!
 
Old 02-21-2013, 01:31 PM   #2
whizje
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Registered: Sep 2008
Location: The Netherlands
Distribution: Slackware64 current
Posts: 582

Rep: Reputation: 129Reputation: 129
Code:
cat /usr/doc/powertop-2.1/README
Calibrating & Power Numbers
---------------------------
PowerTOP will, when running on battery, track your power consumption as well
as your activity on the system. Once there are sufficient such measurements,
PowerTOP can start to report power estimates for various activities.
You can help get this estimation more accurate by running a calibration
cycle:

powertop --calibrate

at least once; this will cycle through various display brightness levels
(including "off") as well as USB device activities and some other workloads.

Extech Power Analyzer / Datalogger support
------------------------------------------
I use, and our analysis teams use, the Extech Power Analyzer/Datalogger
(model number 380803) quite a lot, and PowerTOP supports using this
device over the serial cable. Just pass the device node on the command line
like this

powertop --extech=/dev/ttyUSB0

(where ttyUSB0 is the devicenode of the serial-to-usb adapter on my system)
 
  


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