This was a fresh install, not an upgrade. I have applied all updates made available since the installation, but performance has not changed.
I have not installed any other linux on this laptop. For comparison purposes, I booted it from a 17.04 (Artful) live USB, which has kernel 4.13.0-16. It doesn't feel faster, but of course there are many factors involved ... When running Artful, /proc/cpuinfo displays "cpu MHz : 2000.000" for all 8 CPU's, and never varies. When running c-ray, all 8 CPUs are 50%--75% used, but the fans never spin up. "cpupower frequency-info" reports "current CPU frequency: 400 MHz (asserted by call to kernel)", which contradicts /proc/cpuinfo. I will try an upstream kernel tomorrow. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1769236 Title: CPU frequency stuck at minimum value Status in linux package in Ubuntu: Incomplete Bug description: I installed the Kubuntu variant of Ubuntu 18.04 on a new HP Spectre 13 laptop. Performance is poor. The CPU (an i7-8550U) is running at 400MHz, and never speeds up, even when running some of the Phoronix Test Suite benchmarks. I can use cpupower to switch to the "performance" cpufreq governor, but cannot change the frequency with either governor. Here is the output of some experiments I ran while Phoronix's c-ray test was running. ______________ gjditchf@copperplate:/var/log$ cat /proc/cpuinfo | grep MHz cpu MHz : 400.008 cpu MHz : 400.002 cpu MHz : 400.002 cpu MHz : 400.003 cpu MHz : 400.005 cpu MHz : 400.003 cpu MHz : 400.001 cpu MHz : 400.004 gjditchf@copperplate:/var/log$ cpupower frequency-info analyzing CPU 0: driver: intel_pstate CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: Cannot determine or is not supported. hardware limits: 400 MHz - 4.00 GHz available cpufreq governors: performance powersave current policy: frequency should be within 400 MHz and 1.60 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency: Unable to call hardware current CPU frequency: 400 MHz (asserted by call to kernel) boost state support: Supported: yes Active: yes gjditchf@copperplate:/var/log$ sudo cpupower frequency-set -f 1.60GHz Setting cpu: 0 Error setting new values. Common errors: - Do you have proper administration rights? (super-user?) - Is the governor you requested available and modprobed? - Trying to set an invalid policy? - Trying to set a specific frequency, but userspace governor is not available, for example because of hardware which cannot be set to a specific frequency or because the userspace governor isn't loaded? ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-20-generic 4.15.0-20.21 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: KDE Date: Fri May 4 12:57:25 2018 InstallationDate: Installed on 2018-04-28 (6 days ago) InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: linux-signed UpgradeStatus: No upgrade log present (probably fresh install) --- ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gjditchf 1190 F.... pulseaudio CurrentDesktop: KDE DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2018-04-28 (10 days ago) InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bus 001 Device 003: ID 0bda:564e Realtek Semiconductor Corp. Bus 001 Device 002: ID 0bda:564f Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: HP HP Spectre Laptop 13-af0xx Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic root=UUID=ab54f00a-7dd6-4d75-a664-682f777c841c ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 RelatedPackageVersions: linux-restricted-modules-4.15.0-20-generic N/A linux-backports-modules-4.15.0-20-generic N/A linux-firmware 1.173 Tags: bionic Uname: Linux 4.15.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin monotone plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/13/2017 dmi.bios.vendor: Insyde dmi.bios.version: F.06 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 83A2 dmi.board.vendor: HP dmi.board.version: 55.24 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.06:bd10/13/2017:svnHP:pnHPSpectreLaptop13-af0xx:pvrType1ProductConfigId:rvnHP:rn83A2:rvr55.24:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Spectre dmi.product.name: HP Spectre Laptop 13-af0xx dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1769236/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
