sudo sh -c 'for i in /etc/pm/power.d/* /usr/lib/pm-utils/power.d/*; do echo $i; $i true ; echo $? ; done'
/etc/pm/power.d/*
sh: /etc/pm/power.d/*: not found
127
/usr/lib/pm-utils/power.d/95hdparm-apm

/dev/sda:
 setting Advanced Power Management level to 0xfe (254)
 APM_level	= 254
0
/usr/lib/pm-utils/power.d/anacron
stop: Unknown instance: 
0
/usr/lib/pm-utils/power.d/powersave-policy-dirty-writeback
0
/usr/lib/pm-utils/power.d/powersave-policy-hda-powerdown
0
/usr/lib/pm-utils/power.d/powersave-policy-sata-link-power
1
/usr/lib/pm-utils/power.d/sched-powersave
**sched policy powersave ON
0
/usr/lib/pm-utils/power.d/zztlp
0