[ltp] Noisy fan on T42

[Alejandro Bonilla]

Hi,

Alexandru D. Salcianu wrote:

>Hello!
>
>I have an IBM ThinkPad T42 2373-6VU, 1.7GHz Centrino, ATI Radeon 7500,
>running Fedora Core 3, kernel 2.6.10-1.766_FC3, Xorg 6.8.1.
>
>My (huge) problem is that the fan is always on in Linux, at full
>speed, even when I don't run anything ;( I've even changed the BIOS
>settings such that the processor always runs at min speed (600Mhz) and
>the noise from the fan is unchanged ...
>
>  
>
http://www.xs4all.nl/~bsamwel/laptop_mode/

>Looking at previous posts on this list, I understand that the problem
>is not the CPU, but the video card.  I've edited my xorg.cong file to
>turn on the DynamicClocks option of the Radeon driver:
>
>Section "Device"
>        Identifier  "Videocard0"
>        Driver      "radeon"
>        Option      "DynamicClocks" "True"
>        VendorName  "Videocard vendor"
>        BoardName   "ATI Radeon Mobility 7500"
>EndSection
>
>The option is correctly processed by Xorg, as indicated by Xorg.0.log:
>
>(**) RADEON(0): Option "DynamicClocks" "True"
>
>Still, the fan is still on, with no change whatsoever.
>
>Is there any known solution to the noisy T42 fan problem?
>
>Also, do you know any way of measuring the GPU clockspeed?  (to test
>whether the DynamicClocks setting has any effect).
>
>Thanks,
>
>Alex
>
>PS: I strongly believe the hardware is OK.  I even had an IBM
>technician replace my fan, so the current one is brand new.  The fan
>works as expected in Windows, operating at a very low level most of
>the time.
>  
>