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[Daniel <dplasa@xxxxxxxxx>]

Seems fixed in kernel 4.0 - I just installed 
4.0.0-040000rc1-generic #201502222235 SMP Mon Feb 23 03:57:56 UTC 2015 i686 i686 i686 GNU/Linux
and all entries in /sys/class/power_supply/BAT1/ get updated again!

** Changed in: linux (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1425316

Title:
  ACPI battery code broken with kernel 3.19

Status in linux package in Ubuntu:
  Fix Released

Bug description:
  In Ubuntu 14.04 (Kernel 3.13.*) acpi battery status info worked fine
  and presented info in

  /sys/class/power_supply/BAT0/

  I tested 15.04 (Kernel 3.19.*) and noticed that there isnt any BAT0 in the above said folder anymore. I did some reading at
  https://lkml.org/lkml/2014/12/28/94 and came to conlusion that I should do a

  sudo modprobe sbs_battery

  After that there is a 
  /sys/class/power_supply/BAT1

  which would be nice if only its information was updated at all. But all info read from 
  /sys/class/power_supply/BAT1/*
  will not change - it seems to get updated only once at boot time / first load of the module.

  
  uname -a:
  Linux notebook 3.19.0-031900-generic #201502091451 SMP Mon Feb 9 15:10:05 UTC 2015 i686 i686 i686 GNU/Linux

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