/etc/hdparm.conf is ignored after resuming from hibernation or sleep in 15.04

[Serhiy]

I have

/dev/sda {
    apm = 255
    apm_battery = 255
}

in the /etc/hdparm.conf file because otherwise the disk parks every ~10 seconds. And after upgrading to 15.04 it no longer works after resuming from hibernation, APM level is set to 1 every time.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: hdparm 9.43-1ubuntu3
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Apr 26 00:07:24 2015
Dependencies:
 gcc-5-base 5.1~rc1-0ubuntu1
 libc6 2.21-0ubuntu4
 libgcc1 1:5.1~rc1-0ubuntu1
 multiarch-support 2.21-0ubuntu4
 powermgmt-base 1.31+nmu1
SourcePackage: hdparm
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.hdparm.conf: 2015-04-25T12:52:55.717071

[Serhiy (xintx-ua)]

Changed the config to

/dev/sda {
        apm = 255
        apm_battery = 255
}

and it worked.

[Serhiy (xintx-ua)]

No, it's really ignored after resuming from hibernation.

[Launchpad Janitor (janitor)]

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

[Serhiy (xintx-ua)]

It's also reset after putting machine to sleep.

[Martin Pitt (pitti)]

Just about the only thing that would call hdparm on resuming is /usr/lib/pm-utils/sleep.d/95hdparm-apm . So this is a consequence of not using pm-utils any more, and hdparm now needs to ship a hook in /lib/systemd/system-sleep/ in addition (or instead).

[Serhiy (xintx-ua)]

Workaround:
Adding /lib/systemd/system-sleep/hdparm.sh
with

#!/bin/sh
/usr/lib/pm-utils/sleep.d/95hdparm-apm true

and making it executable worked, thanks.

[Serhiy (xintx-ua)]

Somehow the workaround no longer works.

[Milon Krejca (irox-lp)]

I confirm the problem on Ubuntu 15.10.

In my case I solved it by:
cd /lib/systemd/system-sleep/
vi hdparm_set
>
#!/bin/sh
hdparm -B 254 /dev/sda
>
chmod +x hdparm_set

Check by:
journalctl -u systemd-suspend.service

[Christian Ehrhardt  (paelzer)]

FYI the Debian upload has this and many more issues fixed (package was out of maintainer for a while).
Eventually they picked the solution to:
   * d/hdparm.install: Install systemd sleep and udev scripts,
     thanks to Michael Biebl, Closes: #725284

Too bad it is so late in the cycle while we at least have no delta on this package.
Maybe picking "just" the part that fixes the bug is the safer option?