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Re: cpufreq directory missing on ThinkPad W520



On Thu, 04 Aug 2011, Ralf Hemmecke wrote:
> I don't know whether this mailing list here is the right place to ask, 
> but maybe you can help me finding the right place.

bugzilla.kernel.org, and the linux-acpi mailing list are probably the best
places.

> It might be a BIOS issue (I'm not 100% sure), but I think one cannot 
> require an ordinary W520 Linux user to upgrade the BIOS. Thus I am 
> looking for another route.

We do require that Linux users upgrade their BIOS for correct functionality
and full feature set when the thing is badly broken.  It can be done, and it
is easy.  More instructions on http://thinkwiki.org.

Make no mistake: the newest Lenovo laptops don't have a stable firmware set
yet, you will have to keep it up-to-date if you want it to work better.

> it seemed, it is. My computer doesn't show P-states with the "powertop" 
> program.

Check in the BIOS options, it looks like you somehow disabled them or did
something that made the BIOS hide them, it doesn't have to be a BIOS bug.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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