Yes, I noticed the different output too and could reproduce the
behaviour.
If I unplug the power cord after a fresh boot, wait until all pm-utils
scripts are run and plug the cord in again, then I get the output as in
comment 2 (scripts are run as being on battery). But if I quickly unplug
and plug the power cord while the pm-utils scripts are still called,
then it the scripts are run as in comment 8 - as long as I do the
quickly unplugging and plugging.
But beside this problem of running the scripts with proper arguments
when being on main power again, the wrong initial values are set on boot
time already - on both computers I've tested it with (laptop and
desktop).
*) On the laptop (a Dell Latitude D620 with a PATA harddrive), the
initial APM_level (hdparm -B) is set to 1 - which is obviously too
aggressive.
*) On the desktop computer (HP Pavilion with two SATA harddrives), there
is no APM_level set (as it is not supported on these devices), but the
write cache is disabled and the option "Device-initiated interface power
management" is not set. The harddrives will spin down within some
minutes as soon as the system is idle. Running the /usr/lib/pm-
utils/power.d/harddrive hook manually, the write cache and "Device-
initiated interface power management" are set again.
** Changed in: pm-utils (Ubuntu)
Status: Incomplete => New
--
[maverick] HD spins down all the time on AC
https://bugs.launchpad.net/bugs/606706
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