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[Matthias Ferdinand <mf+ubuntu1@xxxxxx>]

Public bug reported:

Ubuntu 14.04LTS 
pm-utils  1.4.1-13ubuntu0.1

When issuing the pm-suspend command, the scripts set the HIBERNATE_MODE in /sys/power/disk to "suspend".
There is some shell magic to save the previous setting in variable HIBERNATE_MODE_SAVE, but this fails under
the default shell /bin/dash (works correctly with /bin/bash).

Effect: if you use pm-suspend once, the effective HIBERNATE_MODE in /sys/power/disk stays in "suspend", and
any subsequent pm-hibernate will also just do a suspend instead of "platform" or "shutdown".

** Affects: pm-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bashism hibernate pm-utils suspend

** Patch added: "escape special chars in parameter expansion for HIBERNATE_MODE_SAVE"
   https://bugs.launchpad.net/bugs/1394388/+attachment/4264030/+files/hibernate_mode_save-bashism.patch

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https://bugs.launchpad.net/bugs/1394388

Title:
  pm-suspend not restoring /sys/power/disk with /bin/dash

Status in “pm-utils” package in Ubuntu:
  New

Bug description:
  Ubuntu 14.04LTS 
  pm-utils  1.4.1-13ubuntu0.1

  When issuing the pm-suspend command, the scripts set the HIBERNATE_MODE in /sys/power/disk to "suspend".
  There is some shell magic to save the previous setting in variable HIBERNATE_MODE_SAVE, but this fails under
  the default shell /bin/dash (works correctly with /bin/bash).

  Effect: if you use pm-suspend once, the effective HIBERNATE_MODE in /sys/power/disk stays in "suspend", and
  any subsequent pm-hibernate will also just do a suspend instead of "platform" or "shutdown".

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