See: http://www.gskill.us/forum/showthread.php?t=13415
After following the instructions from the RAM support tech:
- Change CPU bus to 233 from 200
- Change CPU multiplier to restore stock clock (actually a slight overclock)
- Change DRAM voltage from 1.5 to 1.6
- Increase CPU-NB voltage by 0.1V to 1.225v
- Manually input RAM timings
The BIOS reports everything took, but Ubuntu 14.04 is reporting a CPU
processor speed of 2.8 Ghz and RAM speed of 1600 Mhz
See any of the Phoronix benchmarks posted there for evidence.
As far as I can tell, the CPU is running at the higher clock, but Ubuntu
is mis-reporting.
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
** Tags added: apport-collected cpufreq cpufreq-info cpuinfo dmidecode
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/379873
Title:
CPU Frequency Scaling Monitor reports incorrect CPU speeds when
overclocked
Status in linux package in Ubuntu:
Confirmed
Bug description:
The reported frequencies of an overclocked Core 2 Duo are incorrect.
Benchmarking and performance testing can confirm that the CPU is
running at the overclocked speeds, but the values reported through
cpuinfo are the standard stock speeds.
CPU has been overclocked from stock 3.00GHz to 3.60GHz. This can be
confirmed through dmidecode (output attached). The issue is that
cpuinfo (and related utilities) all report the stock CPU speeds
instead. This is only a visual/reporting issue. The CPU is still
throttling correctly, and the speed is correct as per the overclocking
ratio.
i.e. (tested and confirmed in benchmarks & Bogomips)
Reported 2.00Ghz = (3.6/3.0 * 2.0) = 2.40GHz True Clock Speed
Reported 3.00Ghz = (3.6/3.0 * 3.0) = 3.60GHz True Clock Speed
There are a few reports of this in the Ubuntu forums, however no
resolution had been found. I have updated the BIOS on my motherboard
(ASUS P5Q) to the latest available, with no changes. All other BIOS
options are per standard - allowing CPU throttling/etc.
Bug #132403 makes reference to this similar issue, but this is not a
BIOS problem, only a reporting problem.
Compare:
cat /proc/cpuinfo
cpufreq-info
dmidecode --type processor
Only dmidecode is reporting the correct CPU speed as set in the BIOS.
Regards,
Robert.
---
Architecture: amd64
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: nvidia
Package: cpufrequtils 006-2
PackageArchitecture: amd64
ProcEnviron:
LANG=en_NZ.utf8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-24.38-generic 2.6.32.15+drm33.5
Tags: lucid
Uname: Linux 2.6.32-24-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers
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