Re: setting cpu speed on crusoe

From: Pavel Machek (
Date: Sat Feb 10 2001 - 16:48:55 EST


> Junichi Morita and I have worked out how to access the crusoe
> "longrun" settings on the crusoe based VAIO. This allows you to enable
> power saving mode and slow the cpu down. It should help battery life a
> lot.

There is no documentation? I thought transmeta is linux-friendly
company ;-).


> the following will enable power saving and set the cpu to the slowest
> speed:
> setpci -s 0:0.0 a8.b=11
> and this will restore you to max speed:
> setpci -s 0:0.0 a8.b=0e
> the bits are:
> LRON bit0: long run "on" - I'm not really sure what this does

Did you try just asking linus?

> LRRV bit1-3: cpu speed
> LREN bit4: seems to enable variable speed

I'm "In my country we have almost anarchy and I don't care."
Panos Katsaloulis describing me w.r.t. patents at
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This archive was generated by hypermail 2b29 : Thu Feb 15 2001 - 21:00:16 EST