I can confirm that I see no more hdparm invocations after specifying "nohdparm". Proving that the bug now no longer appears under any circumstances is kind of tricky for a sporadic problem, but I tried dozens of power adapter state changes and a couple of suspend/resume cycles and have not seen the issue surfacing again.
I can confirm that I see no more hdparm invocations after specifying "nohdparm". Proving that the bug now no longer appears under any circumstances is kind of tricky for a sporadic problem, but I tried dozens of power adapter state changes and a couple of suspend/resume cycles and have not seen the issue surfacing again.