With the computer in 'hard disk parking' mode as described above, I just tried a suspend/resume cycle with power plugged in throughout, and the hard disk is no longer parking. So perhaps the computer gets stuck somehow thinking it is running off batteries and keeps issuing 'hdparm -B 128' commands.
With the computer in 'hard disk parking' mode as described above, I just tried a suspend/resume cycle with power plugged in throughout, and the hard disk is no longer parking. So perhaps the computer gets stuck somehow thinking it is running off batteries and keeps issuing 'hdparm -B 128' commands.