I have a Dell Insprion 1420 (Core 2 Duo @ 1.8GHz), and the battery has recently died. Because of this, the CPUs have been downclocked to the minimum frequency, 800 MHz.
I have tried the workaround described in bug #706089 (Frequency scaling doesn't work in current kernels) and on various pages around the web, namely, adding the processor.ignore_ppc=1 directive to grub. However, it does not have any effect: my CPUs are still running at 800 MHz. The bios limits (/system/cpu/cpu*/cpufreq/bios_limit) are set to 1801000, so that should not be a problem.
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AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu11
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: savior 2055 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe9fc000 irq 47'
Mixer name : 'SigmaTel STAC9228'
Components : 'HDA:83847616,102801f3,00100201 HDA:14f12c06,14f1000f,00100000'
Controls : 27
Simple ctrls : 18
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=28678d84-b482-4854-be94-d70d135f8e49
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: Dell Inc. Inspiron 1420
Package: linux-image-3.2.0-27-generic 3.2.0-27.43
PackageArchitecture: i386
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-27-generic root=UUID=0d9644af-92d9-40d2-9bb7-c95186b58565 ro quiet splash processor.ignore_ppc=1 vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
RelatedPackageVersions:
linux-restricted-modules-3.2.0-27-generic N/A
linux-backports-modules-3.2.0-27-generic N/A
linux-firmware 1.79
Tags: precise running-unity
Uname: Linux 3.2.0-27-generic i686
UpgradeStatus: Upgraded to precise on 2012-05-03 (83 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 08/15/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0DT492
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA02:bd08/15/2007:svnDellInc.:pnInspiron1420:pvr:rvnDellInc.:rn0DT492:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1420
dmi.sys.vendor: Dell Inc.
apport information