[Bug 519142] Re: ThinkPad T43 CPU scaling (ondemand/fixed/..) not working correctly - Ubuntu 9.10/10.4 (stock & mainline)

[Alex Tomic]

Hello,

These scaling problems are plaguing me on my Thinkpad T43 as well. The
behaviour is very difficult to predict; sometimes it will scale fine on
AC and battery power after a fresh boot, then begin to have problems on
battery. Now it is failing to scale at all, even on AC power, on fresh
boot.

My exact model is a 2668WMY, with a single core processor. (CPU details
below)

I've also given the 2.6.32-22 phc kernel a try, and while it appeared to
be helping at first, I'm now back to the unpredictable behaviour. I
compiled and loaded the phc-intel module, and whlie I can now make the
voltage adjustments, there's no help on the CPU scaling front.

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 13
model name	: Intel(R) Pentium(R) M processor 2.00GHz
stepping	: 8
cpu MHz		: 800.000

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ThinkPad T43 CPU scaling (ondemand/fixed/..) not working correctly - Ubuntu 9.10/10.4 (stock & mainline)
https://bugs.launchpad.net/bugs/519142
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