Thinkpad T60 high pitch noise Ubuntu 8.10 under no load
Affects | Status | Importance | Assigned to | Milestone | |
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linux (Ubuntu) |
Invalid
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Undecided
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Unassigned |
Bug Description
I have a Lenovo Thinkpad T60. There is a high pitch noise that comes up whenever Ubuntu 8.10 isn't under load. For example while typing this I hear it. Whenever I'm running an update, loading files, or doing something that seems to be more intensive on the system the noise goes away.
Maybe it has to do with the CPU clocking up and down? Or a problem with the RAM?
I don't think it's the hard drive as the noise definitely isn't coming from where the hard drive is located.
The CPU is an Intel Core 2 Duo, and I have heard about people suggesting it's power management, or the max_cstate settings of the CPU. Either way I only hear it in Linux.
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Workaround:
Adding processor.
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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).