Ubuntu 12.10 : CPU governor is on performance mode making laptop with high temperature

[Hatem MASMOUDI]

Start a laptop, the cpu covernor is on performance mode making laptop with high temperature.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: upower 0.9.17-1build1
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Thu Nov 8 21:14:47 2012
InstallationDate: Installed on 2012-11-07 (1 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: upower
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Gábor Szécsi (deje07)]

When running on AC, the CPU governor is always set to "performance".
In previous Ubuntu editions (I can't remember exactly) the gonvernor was always set to "performance" after boot/login, but was switched to "ondemand" after a minute or so (to speed up login speed as much as possible). But in 12.10 the setting stays at "performance".