[Bug 472046] Re: CPU/mainboard emmit high sound-noise if the CPU is idle. On 2.6.31-14-generic with quad core intel

[LimCore]

Ok, this is the problem:

cpu whine related to c2,c3 etc cpu states (cstate / states)

http://www.inliniac.net/blog/2008/07/25/fixing-noise-on-ubuntu-hardy-804
-aka-setting-max_cstate.html


The work around is to append:
  processor.max_cstate=2
to the /boot/grub/menu.lst   line that loads your kernel  (remember to backup etc before!) example:

linux /boot/vmlinuz-2.6.31-14-generic
root=UUID=b366eab5-0f04-4e8c-9459-0ffd0e6d1b58 ro quiet splash
processor.max_cstate=2

read more:
http://ubuntuforums.org/showthread.php?p=8221309


** Changed in: linux-meta (Ubuntu)
       Status: New => Confirmed

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CPU/mainboard emmit high sound-noise if the CPU is idle. On 2.6.31-14-generic with quad core intel
https://bugs.launchpad.net/bugs/472046
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