Public bug reported:
The OS has misconfigured/identified the CPU so utilities for managing
cpu scalling show inappropriate results.
Currently my system is showing the CPU running at 57% of max speed or
3.6 GHz despite the CPU being a 3.1 GHz cpu. I have the motherboard
doing automated overclocking so this the observed speed is probably
accurate.
root@desk:/sys/devices/cpu# grep . /sys/devices/system/cpu/cpu0/cpufreq/*
/sys/devices/system/cpu/cpu0/cpufreq/affected_cpus:0
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:3279370
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq:6300000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq:1600000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency:4294967295
/sys/devices/system/cpu/cpu0/cpufreq/related_cpus:0
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors:performance
powersave
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq:3433764
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver:intel_pstate
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:performance
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq:6300000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq:1600000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed:<unsupported>
root@desk:/sys/devices/cpu# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 42
Model name: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
Stepping: 7
CPU MHz: 3586.267
CPU max MHz: 6300.0000
CPU min MHz: 1600.0000
BogoMIPS: 6387.46
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 6144K
NUMA node0 CPU(s): 0-3
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est
tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer
aes xsave avx lahf_lm epb tpr_shadow vnmi flexpriority ept vpid xsaveopt dtherm
ida arat pln pts
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: ubuntu-release-upgrader-core 1:16.10.10
ProcVersionSignature: Ubuntu 4.8.0-49.52-generic 4.8.17
Uname: Linux 4.8.0-49-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CrashDB: ubuntu
Date: Tue Apr 25 12:26:11 2017
InstallationDate: Installed on 2017-03-15 (41 days ago)
InstallationMedia: Ubuntu-MATE 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_US
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade yakkety
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https://bugs.launchpad.net/bugs/1686180
Title:
CPU frequency is configured incorrectly
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