Public bug reported: Set the storage to VMD (RAID ON) in BIOS, the cstate be PC3 only.
Check /sys/kernel/debug/pmc_core/package_cstate_show by # watch -n 2 cat /sys/kernel/debug/pmc_core/package_cstate_show root@ubuntu-Precision-3571:/home/ubuntu# cat /sys/kernel/debug/pmc_core/package_cstate_show Package C2 : 75232020 Package C3 : 20028303 Package C6 : 0 Package C7 : 0 Package C8 : 0 Package C9 : 0 Package C10 : 0 ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-25-generic 5.15.0-25.25 ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30 Uname: Linux 5.15.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu80 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1100 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Apr 11 14:36:46 2022 InstallationDate: Installed on 2022-03-29 (12 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20220326) MachineType: Dell Inc. Precision 3571 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-25-generic root=UUID=d8676815-7d4e-4d79-8ba8-66c3cfae6575 ro intel_iommu=on quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-25-generic N/A linux-backports-modules-5.15.0-25-generic N/A linux-firmware 20220329.git681281e4-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/25/2022 dmi.bios.release: 1.1 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.2 dmi.board.name: 0PY010 dmi.board.vendor: Dell Inc. dmi.board.version: D00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.1.2:bd02/25/2022:br1.1:svnDellInc.:pnPrecision3571:pvr:rvnDellInc.:rn0PY010:rvrD00:cvnDellInc.:ct10:cvr:sku0B10: dmi.product.family: Precision dmi.product.name: Precision 3571 dmi.product.sku: 0B10 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug jammy wayland-session -- 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/1968525 Title: Can reach PC3 only when storage in VMD (RAID ON) mode Status in linux package in Ubuntu: New Bug description: Set the storage to VMD (RAID ON) in BIOS, the cstate be PC3 only. Check /sys/kernel/debug/pmc_core/package_cstate_show by # watch -n 2 cat /sys/kernel/debug/pmc_core/package_cstate_show root@ubuntu-Precision-3571:/home/ubuntu# cat /sys/kernel/debug/pmc_core/package_cstate_show Package C2 : 75232020 Package C3 : 20028303 Package C6 : 0 Package C7 : 0 Package C8 : 0 Package C9 : 0 Package C10 : 0 ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-25-generic 5.15.0-25.25 ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30 Uname: Linux 5.15.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu80 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1100 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Apr 11 14:36:46 2022 InstallationDate: Installed on 2022-03-29 (12 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20220326) MachineType: Dell Inc. Precision 3571 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-25-generic root=UUID=d8676815-7d4e-4d79-8ba8-66c3cfae6575 ro intel_iommu=on quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-25-generic N/A linux-backports-modules-5.15.0-25-generic N/A linux-firmware 20220329.git681281e4-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/25/2022 dmi.bios.release: 1.1 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.2 dmi.board.name: 0PY010 dmi.board.vendor: Dell Inc. dmi.board.version: D00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.1.2:bd02/25/2022:br1.1:svnDellInc.:pnPrecision3571:pvr:rvnDellInc.:rn0PY010:rvrD00:cvnDellInc.:ct10:cvr:sku0B10: dmi.product.family: Precision dmi.product.name: Precision 3571 dmi.product.sku: 0B10 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1968525/+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