Please test latest mainline kernel: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/
-- 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/1855178 Title: pstate Status in linux package in Ubuntu: Confirmed Bug description: LSB Release: Ubuntu 19.10 Package: linux-image-5.3.0-23-generic Hardware: System76 Galago Pro v4 (i7-8750H), Clevo-960rd (i7-9750H) Expected results: CPU should be governed by Intel P-State and should normally idle between 400 and 800 MHz when not loaded. Actual results: After update, CPU frequency remains pegged at maximum at all times. This sucks battery life and overheats the laptop. Steps to reproduce: 1. Install Ubuntu 19.10 from official media. Kernel installed will be 5.3.0-18-generic 2. Check CPU frequencies. They will typically idle around 800MHz. Loading the system will spike to max frequencies (4.5 for 9750H, 4.2 for 8750H). 3. Upgrade system. Kernel will update to 5.3.0-23-generic 4. Reboot. 5. Monitor CPU frequencies again. This time, all core will remain at max frequencies. Additional information: 1. Geekbench v4 multi-core scores are cut in half (26K vs 13K) after update. Single-core scores drop around 20%. This does not occur in 19.04 or 18.04. Confirmed on multiple 960rd systems. 2. linux-image-5.3.0-19-generic is also confirmed 3. We suspect that all kernels images after 5.3.0-18 have this bug 4. We are not sure how much hardware is affected. At present, only the 8750/9750H CPUs are confirmed. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kubuntu 2017 F.... pulseaudio /dev/snd/controlC1: kubuntu 2017 F.... pulseaudio CurrentDesktop: KDE DistroRelease: Ubuntu 19.10 InstallationDate: Installed on 2019-11-18 (16 days ago) InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: Notebook P95_96_97Ex,Rx NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-23-generic root=/dev/mapper/vgkubuntu-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7 RelatedPackageVersions: linux-restricted-modules-5.3.0-23-generic N/A linux-backports-modules-5.3.0-23-generic N/A linux-firmware 1.183.2 Tags: eoan Uname: Linux 5.3.0-23-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/01/2019 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: 1.07.13NS1 dmi.board.asset.tag: Tag 12345 dmi.board.name: P95_96_97Ex,Rx dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnINSYDECorp.:bvr1.07.13NS1:bd10/01/2019:svnNotebook:pnP95_96_97Ex,Rx:pvrNotApplicable:rvnNotebook:rnP95_96_97Ex,Rx:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: dmi.product.family: Not Applicable dmi.product.name: P95_96_97Ex,Rx dmi.product.sku: Not Applicable dmi.product.version: Not Applicable dmi.sys.vendor: Notebook --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kubuntu 1949 F.... pulseaudio /dev/snd/controlC1: kubuntu 1949 F.... pulseaudio CurrentDesktop: KDE DistroRelease: Ubuntu 19.10 InstallationDate: Installed on 2019-11-18 (16 days ago) InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: Notebook P95_96_97Ex,Rx NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-24-generic root=/dev/mapper/vgkubuntu-root ro quiet splash ProcVersionSignature: Ubuntu 5.3.0-24.26-generic 5.3.10 RelatedPackageVersions: linux-restricted-modules-5.3.0-24-generic N/A linux-backports-modules-5.3.0-24-generic N/A linux-firmware 1.183.2 Tags: eoan Uname: Linux 5.3.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/01/2019 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: 1.07.13NS1 dmi.board.asset.tag: Tag 12345 dmi.board.name: P95_96_97Ex,Rx dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnINSYDECorp.:bvr1.07.13NS1:bd10/01/2019:svnNotebook:pnP95_96_97Ex,Rx:pvrNotApplicable:rvnNotebook:rnP95_96_97Ex,Rx:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: dmi.product.family: Not Applicable dmi.product.name: P95_96_97Ex,Rx dmi.product.sku: Not Applicable dmi.product.version: Not Applicable dmi.sys.vendor: Notebook To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1855178/+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
