I believe the noise is the micro capacitors charging/discharging. It's a
physical characteristic of the machines. It's not a kernel bug.
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Thinkpad T60 high pitch noise Ubuntu 8.10 under no load
https://bugs.launchpad.net/bugs/309493
You received this bug notification because you are a member
I have the same problem/annoyance on my laptop. I should check my brother's
computer (which is running Windows)
to see if it makes noise too.
CQ60-215DX http://reviews.cnet.com/laptops/hp-compaq-
cq60-215dx/1707-3121_7-33496182.html
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Thinkpad T60 high pitch noise Ubuntu 8.10 under no load
We are closing this bug report because it lacks the information we need
to investigate the problem, as described in the previous comments.
Please reopen it if you can give us the missing information, and don't
hesitate to submit bug reports in the future. To reopen the bug report
you can click on
Thank you for updating us. As per the Kernel Team policy, can you test
with a mainline kernel build please. Instructions are at
https://wiki.ubuntu.com/KernelTeam/MainlineBuilds - this will enable you
to be able to test the latest kernel, and if fixed, we can ascertain
what needs to be pulled in
i have a thinkpad t61, running 9.10 and this is still an issue. it's
really annoying. the fix involves adding processor.max_cstate=2 to grub
configuration. the fix, for me, seems to bring up other issues though,
including the obvious issue of power management. short answer is that it
is still a
Thank you for taking the time to report this bug and helping to make
Ubuntu better. You reported this bug a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an issue
for you. Can you try with the latest Ubuntu release? Thanks in advance.
--
Thinkpad
No that didn't do anything.
I tried using: sudo sysctl processor.max_cstate=2 and it just said
invalid key.
I know of no other way to change kernel parameters, so if anyone can
tell me how to do that?
It should also be noted that this high pitch noise only occurs when the
laptop is not plugged
Just add the parameter in /boot/grub/menu.lst. Find the section for your
kernel and add processor.max_cstate=2:
title Ubuntu jaunty (development branch), kernel 2.6.28-5-generic
uuida194e608-4679-408f-b126-d3abc31773f9
kernel /boot/vmlinuz-2.6.28-5-generic
I get the same kinda error when I add it to the grub menu.1st: Unknown
boot option 'processor.max_cstate=2': ignoring
I would bet this command might be different for my processor as I stated
it's a Core 2 Duo 2GHz in my T60. I googled the Latitude D610 and it
shows it as a Pentium M (if that's
Yes, it's a Centrino (Pentium M), and you're probably right about there
being different settings for different CPUs. Even though the workaround
eliminates the noise, the battery life is dramatically reduced as well.
I remember the noise was introduced a while back, I believe it was
around the
Another point against using a high default HZ value is laptops whose
power electronics make noise when the CPU transitions from halt to
running. Power management has to be completely disabled on these
machines in order to run with a high HZ value and no noise. from
http://kerneltrap.org/node/5430
Hello!
Thank you for reporting this issue and helping to make Ubuntu better!
Could you please tell us if Baard's suggestion has solved your issue?
Thanks in advance!
** Changed in: ubuntu
Status: New = Incomplete
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Thinkpad T60 high pitch noise Ubuntu 8.10 under no load
This also affects my Dell Latitude D610. A workaround for my laptop is
to add:
processor.max_cstate=2
as a kernel parameter. This prevents the CPU from entering the power-
saving-states that generates the noises (c3 and c4).
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Thinkpad T60 high pitch noise Ubuntu 8.10 under no load
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