[ltp] Voltage Scaling on X40

Lars Otten linux-thinkpad@linux-thinkpad.org
Mon, 31 Oct 2005 12:37:45 +0100


On 31.10.2005 10:52, Marcus Hagn wrote:
> http://www.thinkwiki.org/wiki/Pentium_M_undervolting_and_underclocking
>
> Now I want this also in Linux (of course:). Does anybody know if
> there is a user space tool to change the voltages? Or as a second best
> option, has anyone done a patch like the one in thinkwiki.org for a
> X40 (Pentium-M 738, 1.4GHz).

There has recently been some discussion on the Gentoo forums:
http://forums.gentoo.org/viewtopic-t-341298.html

The result is a kernel patch that can be found here:
http://gentoo-wiki.com/HOWTO_Undervolt_a_Pentium_M_CPU

I haven't tried it myself but it's reported to work ;)

HTH,
/Lars