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 -- 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 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
