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Posts: 6
Registered: ‎12-23-2008
Location: NC
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Accepted Solution

x300 + CPU whine + Linux + how to disable C4 state

[ Edited ]

Hi,

 

I also have this annoying CPU whine occurance when my CPU changes to C4.

As I have Linux running on my x300 (Ubuntu 8.10) deactivating Power-Management in bios is not an option because then I cannot adjust the display-brightness with the function-buttons anymore. 

Is it possible to deactivate C4 with a shell script? 

 

EDIT/ I had to reinstall gnome-power-manager after deactivating power-mgmt in bios, adjusting brightness now works again. 

Yet, my question still remains. 

 

Thanks in advance

Message Edited by Tackelton on 12-23-2008 08:23 AM
Lenovo ThinkPad X300 N1214GE - SL7100 3GB/64GB 13"WXGA+ X3100
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Posts: 6
Registered: ‎12-23-2008
Location: NC
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Re: x300 + CPU whine + Linux + how to disable C4 state

Issue solved.

 

Here is how to do it:

 

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

 

 

Lenovo ThinkPad X300 N1214GE - SL7100 3GB/64GB 13"WXGA+ X3100