On Tue, Jul 9, 2013 at 1:36 PM, Pascal Diogo Antunes <pascal(a)diogoantunes.org&gt; wrote: > On Tue, 9 Jul 2013 12:47:38 -0700 > "Kok, Auke-jan H" <auke-jan.h.kok(a)intel.com&gt; wrote: > >> On Tue, Jul 9, 2013 at 8:41 AM, <pascal(a)diogoantunes.org&gt; wrote: >> > Hi, >> > I installed powertop, a great program. But I see on the >> > https://01.org/powertop/sites/default/files/powertop.png picture that >> > is possible to have a power estimation. >> > Great, but I don't have no power indication available. >> > >> > What can I do? >> >> Power consumption can be estimated by running on the battery (draining >> it and measuring the drain). So, logically, you should unplug your >> power cable. >> >> If you do not have a battery in your system, you can use an external >> power meter, but those can be costly. >> >> Cheers, >> >> Auke > > I unpluged and ... > # acpi > Battery 0: Discharging, 79%, rate information unavailable > # powertop (powertop 2.0 /usr/local/sbin/powertop) > Loaded 0 prior measurements > Cannot load from file /var/cache/powertop/saved_parameters.powertop > [?1049h [1;58r (B [m [4l [?7h [39;49m [?1h = [39;49m (B [m [H > [2Jterminate called after throwing an instance of > 'std::ios_base::failure' what(): basic_filebuf::underflow error > reading the file it may be interesting to open a bug report and provide the details on the system and the battery information that sysfs provides for your system such that that crash can be fixed. Cheers, Auke