kernel-packages team mailing list archive

[Matthias Ferdinand <mf+ubuntu1@xxxxxx>]

Hi,

sorry but I currently don't have access to that machine. The information
I gave (14.04LTS, pm-utils  1.4.1-13ubuntu0.1) should be sufficient.
Relevant part is in /usr/lib/pm-utils/pm-functions, near the end:

   ...
   # for kernels that support suspend to both (i.e. hybrid suspend)
   # since kernel 3.6
   ...

The suspend-wakeup-hibernate mechanism would be selected in the section
below that, but since the script finds that the kernel on Ubuntu 14.04
is recent enough to support a true "hybrid suspend" (suspend-to-both),
this is never reached (because SUSPEND_HYBRID_MODULE variable is already
set).

pm-utils as they come with Ubuntu offer
  - pm-suspend (suspend-to-ram, no power off)
  - pm-hibernate (suspend-to-disk, power off)
  - pm-suspend-hybrid (suspend-to-both, no power off)

My patch adds another method
  - pm-suspend-wakeup-hibernate (suspend-to-ram, wakeup after timeout,
    hibernate, power off)

You just have to either add a new symlink:

   ln -s /usr/lib/pm-utils/pm-functions \
         /usr/sbin/pm-suspend-wakeup-hibernate

or assign "suspend_wakeup_hibernate" to SUSPEND_HYBRID_MODULE in one of
the config files, but then you lose the suspend-to-both functionality.
This might be useful if suspend-to-both does not work reliably on a
specific machine.

Regards
Matthias


On Fri, Dec 05, 2014 at 08:57:36PM -0000, Christopher M. Penalver wrote:
> Matthias Ferdinand, could you please execute the following via a terminal in order for the necessary debugging information to be attached:
> apport-collect 1394394
> 
> ** Package changed: pm-utils (Ubuntu) => linux (Ubuntu)
> 
> ** Changed in: linux (Ubuntu)
>    Importance: Undecided => Low
> 
> ** Changed in: linux (Ubuntu)
>        Status: New => Incomplete
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1394394
> 
> Title:
>   pm-suspend-wakeup-hibernate (aka pm-suspend-hybrid before 3.6)
> 
> Status in linux package in Ubuntu:
>   Incomplete
> 
> Bug description:
>   Ubuntu 14.04LTS
>   pm-utils  1.4.1-13ubuntu0.1
> 
>   before kernel 3.6, pm-suspend-hybrid would do suspend/wakeup/hibernate
>   (with full power-off).
> 
>   since kernel 3.6, pm-suspend-hybrid will do suspend-to-both (without full power-off).
>   The old functionality is not available any more. At times I would prefer using the old
>   method, but pm-utils does not offer it anymore.
> 
>   Attached patch adds back the old functionality, either by
>      - setting SUSPEND_HYBRID_MODULE variable to "suspend_wakeup_hibernate"
>        in some /etc/pm/config.d- or /etc/pm/pm-suspend.config.d- File
>      - invoking /usr/lib/pm-utils/bin/pm-action from a symlink called pm-suspend-wakeup-hibernate
> 
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1394394/+subscriptions

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1394394

Title:
  pm-suspend-wakeup-hibernate (aka pm-suspend-hybrid before 3.6)

Status in linux package in Ubuntu:
  Incomplete

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

  before kernel 3.6, pm-suspend-hybrid would do suspend/wakeup/hibernate
  (with full power-off).

  since kernel 3.6, pm-suspend-hybrid will do suspend-to-both (without full power-off).
  The old functionality is not available any more. At times I would prefer using the old
  method, but pm-utils does not offer it anymore.

  Attached patch adds back the old functionality, either by
     - setting SUSPEND_HYBRID_MODULE variable to "suspend_wakeup_hibernate"
       in some /etc/pm/config.d- or /etc/pm/pm-suspend.config.d- File
     - invoking /usr/lib/pm-utils/bin/pm-action from a symlink called pm-suspend-wakeup-hibernate

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1394394/+subscriptions