Ubuntu
cpufreqd package

  1. Bug #422858
  2. Comment #58

Comment 58 for bug 422858

Revision history for this message
Roman Kagan (rkagan) wrote : Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

On Thu, Dec 03, 2009 at 12:25:12AM -0000, Runar Ingebrigtsen wrote:
> I have upgraded to Karmic, so here's my SSDT2 table.

Identical to mine.

> Besides, I found this forum discussing how to load custom SSDT tables for MacOS X:
>
> Stupid Question: Is this a possible approach in Grub?

In principle yes:
http://www.lesswatts.org/projects/acpi/overridingDSDT.php
but that's way too hackish.

Also, as noted at
http://episteme.arstechnica.com/eve/forums/a/tpc/f/77909774/m/840002350041?r=665000550041#665000550041,
the BIOS has problems with other P-states for this CPU (we have 800,
1066, 1333 while it should've been something like 833, 1000, 1333,
1666), so it must be doing something wrong in general.

I still believe we need to get this fixed in the BIOS. If anybody has
similar data on offtopic systems that would be a more convincing
argument for the vendor.