i have this problem with kernel 4.0-rc6 and a amd c-60 (there is a bug
on the kernel.org bugzilla somewhere but i lost it) , ive attached a
log of turbostat running and this is the cpufreq-info output of one
core:
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 4294.55 ms.
hardware limits: 800 MHz - 1000 MHz
available frequency steps: 1000 MHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 800 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz (asserted by call to hardware).
cpufreq stats: 1000 MHz:5,31%, 800 MHz:94,69% (27776)
** Attachment added: "turbostat.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877877/+attachment/4364377/+files/turbostat.log
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https://bugs.launchpad.net/bugs/877877
Title:
AMD Turbo Core not working on 11.10
Status in linux package in Ubuntu:
Triaged
Bug description:
The kernel says:
$ dmesg | grep powernow
[ 1.877385] powernow-k8: Found 1 AMD Phenom(tm) II X6 1100T Processor (6
cpu cores) (version 2.20.00)
[ 1.877398] powernow-k8: Core Performance Boosting: on.
[ 1.877423] powernow-k8: 0 : pstate 0 (3300 MHz)
[ 1.877424] powernow-k8: 1 : pstate 1 (2500 MHz)
[ 1.877425] powernow-k8: 2 : pstate 2 (1700 MHz)
[ 1.877426] powernow-k8: 3 : pstate 3 (800 MHz)
But when I'm running a singe threaded application, cpuinfo says:
$ cat /proc/cpuinfo | grep MHz
cpu MHz : 800.000
cpu MHz : 3300.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
when I should be getting a boost to 3700MHz.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-generic 3.0.0.12.14
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: andrew 1687 F.... pulseaudio
/dev/snd/controlC0: andrew 1687 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
Mixer name : 'Realtek ALC889A'
Components : 'HDA:10ec0885,1458a102,00100101'
Controls : 41
Simple ctrls : 23
Card1.Amixer.info:
Card hw:1 'REC'/'Roland UA-30 (44100Hz, Analog REC) at usb-0000:00:12.2-4.4,
full speed'
Mixer name : 'USB Mixer'
Components : 'USB0582:0006'
Controls : 5
Simple ctrls : 4
Date: Wed Oct 19 00:10:33 2011
HibernationDevice: RESUME=UUID=24678a6c-8273-4e5b-ab43-a38d55e7455c
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. GA-MA785GM-US2H
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic
root=UUID=a5fa7ee5-ecfa-45f8-89a7-5b5e1c12d067 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.0.0-12-generic N/A
linux-backports-modules-3.0.0-12-generic N/A
linux-firmware 1.60
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/08/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F12a
dmi.board.name: GA-MA785GM-US2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrF12a:bd07/08/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA785GM-US2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA785GM-US2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA785GM-US2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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