Public bug reported:
I was recently upgrading from Ubuntu Gnome 15.10 to 16.04 on my
ThinkPad. Before the frequency-scaling chose the minimum possible
frequency when the system was on low load. Now, when I allow the CPU to
choose anything between the lowest and highest possible frequency, it
sticks to the highest frequency for 90% of time and only occasionally
drops to the low frequency.
I can confirm (htop) that my system load is practically zero. Also the
CPU Power Manager Applet from Gnome Shell works well, because I can
force low frequency by reducing the maximum allowed frequency and can
also switch off Turbo Boost.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-generic 4.4.0.28.30
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: timeshifter 1768 F.... pulseaudio
/dev/snd/controlC1: timeshifter 1768 F.... pulseaudio
CurrentDesktop: GNOME
Date: Sat Jul 2 12:11:42 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=87cca434-274f-4464-9598-97fd7a1338fe
InstallationDate: Installed on 2016-03-19 (104 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20C0003SFR
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/usr/bin/zsh
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-28-generic
root=UUID=e52c99ea-9646-4e8a-b8ad-c47b175ac5a3 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-28-generic N/A
linux-backports-modules-4.4.0-28-generic N/A
linux-firmware 1.157.1
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-07-02 (0 days ago)
dmi.bios.date: 11/07/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: B0ET24WW (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20C0003SFR
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrB0ET24WW(1.11):bd11/07/2014:svnLENOVO:pn20C0003SFR:pvrThinkPadS1Yoga:rvnLENOVO:rn20C0003SFR:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20C0003SFR
dmi.product.version: ThinkPad S1 Yoga
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug xenial
** Attachment added: "version.log"
https://bugs.launchpad.net/bugs/1598394/+attachment/4694134/+files/version.log
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https://bugs.launchpad.net/bugs/1598394
Title:
intel_pstate has too aggressive frequency selection
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