Comment 494 for bug 59695

I find it strange that so many people say there is no possible workaround for their system. If you can stop the problem by applying hdparm -B 255 (or 254) yourself, then the only remaining problem is to make sure that is always applied (particularly after a suspend). If that is the problem, then see the tail comments of bug 89269.

Or are there some drives where even hdparm -B 255/254 does not prevent the parking?

Seems to me the only difference between a "broken" and "non-broken" drive is the default value of this setting, and whether or not it goes back to the default (and hence needs to be changed again by Ubuntu) after a suspend (or reboot).