How do I use pm-suspend-hybrid by default instead of pm-suspend?

Question

I would like to use the hybrid suspend method instead of suspend when closing the lid or selecting "Suspend" from the menu.

I can imagine to change the pm-suspend script to do so automatically, but there might be a more maintainable / easier way.

Answer 1

I am using the following pm-utils configuration to change $METHOD to suspend_hybrid, if it is "suspend":

% cat /etc/pm/config.d/00-use-suspend-hybrid
# Always use suspend_hybrid instead of suspend
if [ "$METHOD" = "suspend" ]; then
  METHOD=suspend_hybrid
fi

You might want to make sure that the hybrid method is supported on your system via the following code. If it says "0" it should work:

sudo pm-is-supported --suspend-hybrid && echo $?

Patrick Dickey adds:

So, in order to set a specific hibernate delay, you would add this code instead of the code mentioned in the article (under the sudo -e /etc/pm/config.d/00-use-suspend-hybrid command)

# Always use suspend_hybrid instead of suspend
if [ "$METHOD" = "suspend" ]; then
    METHOD=suspend_hybrid
fi
PM_HIBERNATE_DELAY=XX

Where, XX is the number of seconds that you want (for example "PM_HIBERNATE_DELAY=300" for 5 minutes)

• Corresponding blog post

Answer 2

In 12.04 I noticed that when hibernation is triggered (using PM_HIBERNATE_DELAY=XX), the resume/thaw the shell scripts do not unset the grub recordfail variable. Therefore grub does not autoboot.

Timeout is set to -1 and it awaits user selection. I am guessing this requires some editing of scripts in /etc/pm/sleep.d/10_grub-common. Am a novice so I haven't dabbled to figure out the exact change unfortunately.