[arch-general] harddisk suspending far to often

[G. Schlisio]

Am 07.12.2012 01:49, schrieb Calvin Morrison:
> On 6 December 2012 17:05, G. Schlisio <g.schlisio at dukun.de> wrote:
>
>> Am 06.12.2012 21:07, schrieb Jonathan Steel:
>>
>>   On Thu, Dec 06, 2012 at 10:59:27AM +0100, G. Schlisio wrote:
>>>> after updating my laptop today [0] (no testing enabled) i notice
>>>>> that my harddisk keeps spinning down and up every 10 seconds or
>>>>> so.
>>>>> might this be related to the update or where can i stop this?
>>>>>
>>>> somehow it resolved itself today. now hdd is running continuously again.
>>>>
>>> If it happens again, you can check this with:
>>>
>>> hdparm -B /dev/sdx
>>>
>>> If it's spinning down too often, try:
>>>
>>> hdparm -B 254 /dev/sdx
>>>
>>>   thank you for your advice.
>> hdparm -B /device returns 254 to me now, thats quire expected, because now
>> everything works fine.
>>
>> i wonder, how/whether it could have been altered yesterday.
>> do programs like powertop touch those values?
>>
> If you are messing around with powertop, yes I think that could have been
> it. Usually powertop can adjust hd settings
>
i uninstalled powertop after my last post, but yesterday it happend 
again. when i checked the APM level it was set to 1.
i only experience this after suspend to ram.
how can i get to know, why this is happening, and maybe stop it?