Battery mode:
[code]alessio@alessio-ubuntu:~$ sudo hdparm -I /dev/sda | grep "Advanced power 
management level"
        Advanced power management level: 127[/code]
Adapter mode:
[code]alessio@alessio-ubuntu:~$ sudo hdparm -I /dev/sda | grep "Advanced power 
management level"
        Advanced power management level: 254[/code]

I can hear that bad noise every... I think 20-30 seconds.

I attach the file requested by Fabio Marconi.


** Attachment added: "kern.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/795760/+attachment/3084146/+files/kern.log

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Title:
  HDD clicking sound on netbook

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