[Bug 518535] [NEW] After CPU throttling, frquency doesn't go more than 800Mhz

[Nicolás Lichtmaier]

Public bug reported:

When watching a movie the CPU's temperature increases. At some point I
got something like this from kernel:

CPU1: Temperature above threshold, cpu clock throttled (total events = 1)
CPU1: Temperature/speed normal

After that, CPU will never go to more than 800Mhz no matter what I do,
And scaling_max_freq in /sys shows 800000 .

ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  nick       2528 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6ffc000 irq 21'
   Mixer name	: 'SigmaTel STAC9228'
   Components	: 'HDA:83847616,1028022e,00100402'
   Controls      : 28
   Simple ctrls  : 18
Date: Sun Feb  7 17:20:43 2010
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=514c3239-8cd1-42c1-b55f-3cc6f8498d7b
MachineType: Dell Inc. XPS M1530
NonfreeKernelModules: nvidia
Package: linux-image 2.6.32.12.12
ProcCmdLine: root=UUID=1c8b6b97-3d59-4fbc-a959-b53a69e45285 ro i8042.nomux=1 e rootfstype=ext4 quiet splash
ProcEnviron:
 LANGUAGE=es_AR.UTF-8
 PATH=(custom, user)
 LANG=es_AR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-12.17-generic
Regression: Yes
RelatedPackageVersions: linux-firmware 1.29
Reproducible: Yes
SourcePackage: linux-meta
TestedUpstream: No
Uname: Linux 2.6.32-12-generic x86_64
WpaSupplicantLog:
 
dmi.bios.date: 11/19/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0D501F
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd11/19/2008:svnDellInc.:pnXPSM1530:pvr:rvnDellInc.:rn0D501F:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1530
dmi.sys.vendor: Dell Inc.

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid needs-upstream-testing regression-potential

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After CPU throttling, frquency doesn't go more than 800Mhz
https://bugs.launchpad.net/bugs/518535
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