CPU frequency scaling does not work

[John.Michael.Kane]

Does not scale the cpu at all under dapper 64bit version. cpu runs at full speed..

[gunksta (gunksta)]

According to the gnome-cpufreq applet, my processor is scaling, but here's some dmesg goodness for the confirm:

[380400.252216] powernow-k8: transition frequency failed
[380401.263839] powernow-k8: ignoring illegal change in lo freq table-2 to 0x2
[380401.264106] powernow-k8: transition frequency failed

It says that a lot.

[Hannes Ovrén (kigurai)]

My processor (Turion64 MT-30 on a ASUS A6 laptop) runs in fullspeed as well on all kernels except 2.6.15-19-386, where it does work without problems. I have tried the k7 kernel and 386 kernel from -18 to -21, and 2.6.15-19-386 is the only kernel where the CPU is not running at contant full speed, heating my laptop to 70 degrees, which is bad.

[NDEE (ndee703)]

Can confirm this with the latest 2.6.15-25, whereas it works well with 2.6.15-23 on a Compaq NX8220 with Centrino.

[Ondřej Nový (onovy)]

this is kernel related, not gnome applet

[Matti Lindell (mlind)]

Probably related/duplicate of #34641

[Matti Lindell (mlind)]

Lol, I meant https://launchpad.net/distros/ubuntu/+source/linux-source-2.6.15/+bug/36014