*** This bug is a duplicate of bug 1544612 ***
    https://bugs.launchpad.net/bugs/1544612

** This bug is no longer a duplicate of bug 1414110
   Wireless powersave doesn't work (pm-utils)
** This bug has been marked a duplicate of bug 1544612
   Missing fix for 1299975 claimed to be in pm-utils (1.4.1-13ubuntu0.1)

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Touch seeded packages, which is subscribed to pm-utils in Ubuntu.
https://bugs.launchpad.net/bugs/1443249

Title:
  After kernel-3.13.0-41, wireless script checks wrong sys file.

Status in pm-utils package in Ubuntu:
  New

Bug description:
  [TEST CASE]
  * on a laptop machine with a ac adapter connect & wireless interface run:
  1. ac adapter disconnect
  2. $ tail /var/log/pm-powersave.log & $ iwconfig

  [Actual Result]
  * wireless power management does not "ON"

  $ tail /var/log/pm-powersave.log
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->
  Running hook /usr/lib/pm-utils/power.d/wireless true:
  cat: /sys/class/net/wlan0/device/enabled: No such file or directory
  /usr/lib/pm-utils/power.d/wireless true: success.
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->

  $ iwconfig
  wlan0     IEEE 802.11bgn  ESSID:"xxxxxxxxx"  
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->
            Power Management:off
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->

  [Expected Result]
  $ tail /var/log/pm-powersave.log
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->
  Running hook /etc/pm/power.d/wireless true:
  Turning powersave for wlan0 on...Done.
  /etc/pm/power.d/wireless true: success.
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->

  $ iwconfig
  wlan0     IEEE 802.11bgn  ESSID:"xxxxxxxxx"  
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->
            Power Management:on
  --->---> snip --->---> snip --->---> snip --->---> snip --->--->

  
  $ lsb_release -a
  No LSB modules are available.
  Distributor ID:       Ubuntu
  Description:  Ubuntu 14.04.2 LTS
  Release:      14.04
  Codename:     trusty

  $ uname -a
  Linux xxxxxxx 3.13.0-49-generic #81-Ubuntu SMP Tue Mar 24 19:29:48 UTC 2015 
x86_64 x86_64 x86_64 GNU/Linux

  $ cat /etc/modprobe.d/ath9k_powersave.conf 
  options ath9k ps_enable=1

  $ apt-cache policy pm-utils
  pm-utils:
    インストールされているバージョン: 1.4.1-13ubuntu0.1
    候補:               1.4.1-13ubuntu0.1
    バージョンテーブル:
   *** 1.4.1-13ubuntu0.1 0
          500 http://www.ftp.ne.jp/Linux/packages/ubuntu/archive/ 
trusty-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1.4.1-13 0
          500 http://www.ftp.ne.jp/Linux/packages/ubuntu/archive/ trusty/main 
amd64 Packages

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