<link>http://people.skolelinux.org/pere/blog/</link>
<atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
+ <item>
+ <title>Discharge rate estimate in new battery statistics collector for Debian</title>
+ <link>http://people.skolelinux.org/pere/blog/Discharge_rate_estimate_in_new_battery_statistics_collector_for_Debian.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Discharge_rate_estimate_in_new_battery_statistics_collector_for_Debian.html</guid>
+ <pubDate>Mon, 23 May 2016 09:35:00 +0200</pubDate>
+ <description><p>Yesterday I updated the
+<a href="https://tracker.debian.org/pkg/battery-stats">battery-stats
+package in Debian</a> with a few patches sent to me by skilled and
+enterprising users. There were some nice user and visible changes.
+First of all, both desktop menu entries now work. A design flaw in
+one of the script made the history graph fail to show up (its PNG was
+dumped in ~/.xsession-errors) if no controlling TTY was available.
+The script worked when called from the command line, but not when
+called from the desktop menu. I changed this to look for a DISPLAY
+variable or a TTY before deciding where to draw the graph, and now the
+graph window pop up as expected.</p>
+
+<p>The next new feature is a discharge rate estimator in one of the
+graphs (the one showing the last few hours). New is also the user of
+colours showing charging in blue and discharge in red. The percentages
+of this graph is relative to last full charge, not battery design
+capacity.</p>
+
+<p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2016-05-23-battery-stats-rate.png"/></p>
+
+<p>The other graph show the entire history of the collected battery
+statistics, comparing it to the design capacity of the battery to
+visualise how the battery life time get shorter over time. The red
+line in this graph is what the previous graph considers 100 percent:
+
+<p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2016-05-23-battery-stats-history.png"/></p>
+
+<p>In this graph you can see that I only charge the battery to 80
+percent of last full capacity, and how the capacity of the battery is
+shrinking. :(</p>
+
+<p>The last new feature is in the collector, which now will handle
+more hardware models. On some hardware, Linux power supply
+information is stored in /sys/class/power_supply/ACAD/, while the
+collector previously only looked in /sys/class/power_supply/AC/. Now
+both are checked to figure if there is power connected to the
+machine.</p>
+
+<p>If you are interested in how your laptop battery is doing, please
+check out the
+<a href="https://tracker.debian.org/pkg/battery-stats">battery-stats</a>
+in Debian unstable, or rebuild it on Jessie to get it working on
+Debian stable. :) The upstream source is available from <a
+href="https://github.com/petterreinholdtsen/battery-stats">github</a>.
+Patches are very welcome.</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+</description>
+ </item>
+
<item>
<title>French edition of Lawrence Lessigs book Cultura Libre on Amazon and Barnes & Noble</title>
<link>http://people.skolelinux.org/pere/blog/French_edition_of_Lawrence_Lessigs_book_Cultura_Libre_on_Amazon_and_Barnes___Noble.html</link>
</description>
</item>
- <item>
- <title>Lets make a Norwegian Bokmål edition of The Debian Administrator's Handbook</title>
- <link>http://people.skolelinux.org/pere/blog/Lets_make_a_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lets_make_a_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook.html</guid>
- <pubDate>Sun, 10 Apr 2016 23:20:00 +0200</pubDate>
- <description><p>During this weekends
-<a href="http://www.nuug.no/news/Oslo__Takk_for_feilfiksingsfesten.shtml">bug
-squashing party and developer gathering</a>, we decided to do our part
-to make sure there are good books about Debian available in Norwegian
-Bokmål, and got in touch with the people behind the
-<a href="http://debian-handbook.info/">Debian Administrator's Handbook
-project</a> to get started. If you want to help out, please start
-contributing using
-<a href="https://hosted.weblate.org/projects/debian-handbook/">the
-hosted weblate project page</a>, and get in touch using
-<a href="http://lists.alioth.debian.org/mailman/listinfo/debian-handbook-translators">the
-translators mailing list</a>. Please also check out
-<a href="https://debian-handbook.info/contribute/">the instructions for
-contributors</a>.</p>
-
-<p>The book is already available on paper in English, French and
-Japanese, and our goal is to get it available on paper in Norwegian
-Bokmål too. In addition to the paper edition, there are also EPUB and
-Mobi versions available. And there are incomplete translations
-available for many more languages.</p>
-</description>
- </item>
-
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