blog/Full_battery_stats_collector_is_now_available_in_Debian.html

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   6     <title>Petter Reinholdtsen: Full battery stats collector is now available in Debian</title>
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  14  <h1>
  15      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Full battery stats collector is now available in Debian</div>
  24       <div class="date">23rd March 2016</div>
  25       <div class="body"><p>Since this morning, the battery-stats package in Debian include an
  26 extended collector that will collect the complete battery history for
  27 later processing and graphing.  The original collector store the
  28 battery level as percentage of last full level, while the new
  29 collector also record battery vendor, model, serial number, design
  30 full level, last full level and current battery level.  This make it
  31 possible to predict the lifetime of the battery as well as visualise
  32 the energy flow when the battery is charging or discharging.</p>
  33
  34 <p>The new tools are available in <tt>/usr/share/battery-stats/</tt>
  35 in the version 0.5.1 package in unstable.  Get the new battery level graph
  36 and lifetime prediction by running:
  37
  38 <p><pre>
  39 /usr/share/battery-stats/battery-stats-graph /var/log/battery-stats.csv
  40 </pre></p>
  41
  42 <p>Or select the 'Battery Level Graph' from your application menu.</p>
  43
  44 <p>The flow in/out of the battery can be seen by running (no menu
  45 entry yet):</p>
  46
  47 <p><pre>
  48 /usr/share/battery-stats/battery-stats-graph-flow
  49 </pre></p>
  50
  51 <p>I'm not quite happy with the way the data is visualised, at least
  52 when there are few data points.  The graphs look a bit better with a
  53 few years of data.</p>
  54
  55 <p>A while back one important feature I use in the battery stats
  56 collector broke in Debian.  The scripts in
  57 <tt>/usr/lib/pm-utils/power.d/</tt> were no longer executed.  I
  58 suspect it happened when Jessie started using systemd, but I do not
  59 know.  The issue is reported as
  60 <a href="https://bugs.debian.org/818649">bug #818649</a> against
  61 pm-utils.  I managed to work around it by adding an udev rule to call
  62 the collector script every time the power connector is connected and
  63 disconnected.  With this fix in place it was finally time to make a
  64 new release of the package, and get it into Debian.</p>
  65
  66 <p>If you are interested in how your laptop battery is doing, please
  67 check out the
  68 <a href="https://tracker.debian.org/pkg/battery-stats">battery-stats</a>
  69 in Debian unstable, or rebuild it on Jessie to get it working on
  70 Debian stable. :) The upstream source is available from
  71 <a href="https://github.com/petterreinholdtsen/battery-stats">github</a>.
  72 As always, patches are very welcome.</p>
  73 </div>
  74
  75       <div class="tags">Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.</div>
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  87 <h2>Archive</h2>
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  90 <li>2016
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