• February
  • 9th
  • 2008

EPIA-SN e_powersaver

Posted by MaEl in: Bits-and-Bytes Comments (1)


after all.. i have to edit the e_powersaver.c to make it worked..

in e_powersaver.c

if (c->x86_vendor != X86_VENDOR_CENTAUR
|| c->x86 != 6 || c->x86_model != 10)

but

#cat /proc/cpuinfo
says

...
vendor_id : CentaurHauls
cpu family : 6
model : 13
model name : VIA C7 Processor 1800MHz
...

so cpu is 6 and model 13

so i edit the
if (c->x86_vendor != X86_VENDOR_CENTAUR
|| c->x86 != 6 || c->x86_model != 13)

and remove

if (current_voltage > 0x1c || max_voltage > 0x1c)
return -EINVAL;

compile the module..  and voila.. it worked!!

the speed goes down to 798Mhz for idle.. saving me another 2Watt of Energy and a little bit cooler

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One Response to “EPIA-SN e_powersaver”

  1. Nosfisk - CPU scaling finally works - blog.hest.se Says:
    April 28th, 2008 at 3:14 am

    [...] – CPU scaling finally works After following the guide on this page it seems to work like a charm. pixca.net/2008/02/09/epia-sn-e_powersaver/ It was my first linux kernel build ever ;) I just built another kernel and even that worked, with [...]

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