Comment 473 for bug 59695

I would recommend taking a look at bug 89269. The real problem, at least for me, is that the hdparm settings that are supposed to take place in power.sh when you have LAPTOP_MODE_ENABLED actually only take place when you change power sources, not when you resume from a suspend. See Valentin Neacsu's most recent comment in bug 89269 for a workaround that fixes the problem for me.