pm-powersave is not triggered when unplugging charger

[Oscar Tiderman]

Not sure at all which package to file this bug against, hopefully someone can help me tag the right package. There is no pm-powersave event triggered when plugging or unplugging my charger, none of the powersave scripts are therefore triggered. I'm on a Lenovo Yoga 2 Pro. This must be a regression in Vivid, has worked fine in both Trusty and Utopic. I can manually run sudo pm-powersave true to trigger the scripts

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: pm-utils 1.4.1-15
ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8
Uname: Linux 3.19.0-20-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
Date: Wed Jun 3 07:05:30 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-03-30 (429 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
SourcePackage: pm-utils
SystemImageInfo:
 current build number: 0
 device name: ?
 channel: daily
 last update: Unknown
UpgradeStatus: Upgraded to vivid on 2015-04-30 (33 days ago)

[Martin Thornton (thornton-ma)]

Caused by switch from upstart to systemd.

Copy attachment (requires root) to /etc/udev/rules.d/powersave.rules.

See also bug https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1455097 for same problem with suspend/resume

Still always assumes on battery at boot though.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Oscar Tiderman (oscar-tiderman)]

Thanks Martin, that makes sense. With your file in place pm-powersave is now triggered correctly when unplugging my charger.

[Pilot6 (hanipouspilot)]

But this is not triggered on boot.

You will need to add

udevadm trigger -s power_supply

to rc.local

[Michele Kipiel (michele-kipiel)]

Still present in 16.04.

Also: are custom pm files still allowed? It took me quite some time to tune my XPS13 to perfection, it would suck if I had to throw everything out of the window now.

File attached.

[Michele Kipiel (michele-kipiel)]

Update: I seem to have solved the problem tweaking the udev commands as follows:

SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/usr/sbin/pm-powersave true"
SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/usr/sbin/pm-powersave true"

this way pm-powersave is executed every time a power source change happens, allowing the if/else statement i put in the custom script to take care of the rest.

I don't know whether this is a long-term solution, but it seems to be working so far.