We have the same bug in the past, it is: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2034504
-- 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/2072679 Title: Regression: unable to reach low idle states on Tiger Lake Status in linux package in Ubuntu: In Progress Status in linux source package in Noble: In Progress Status in linux source package in Oracular: In Progress Bug description: After upgrading to Ubuntu 24.04 the CPU is unable to hit lower idle states. The device is a HP Spectre x360 14 (14-ea1000) with a Tiger Lake CPU. This is a regression introduced somewhere 6.5.0-42 and 6.8.0-36. The issue is not observed when booting the same OS with 6.5.0-42. Some debug output: root@hp-spectre-x360:/sys/kernel/debug/pmc_core# cat package_cstate_show Package C2 : 36087003 Package C3 : 69314350 Package C6 : 0 Package C7 : 0 Package C8 : 0 Package C9 : 0 Package C10 : 0 $ sudo cat /sys/kernel/debug/pmc_core/substate_requirements Element | S0i2.0 | Status | pmc0: USB2PLL_OFF_STS | Required | Yes | pmc0: PCIe/USB3.1_Gen2PLL_OFF_STS | Required | | pmc0: PCIe_Gen3PLL_OFF_STS | Required | Yes | pmc0: OPIOPLL_OFF_STS | Required | Yes | pmc0: OCPLL_OFF_STS | Required | Yes | pmc0: MIPIPLL_OFF_STS | Required | Yes | pmc0: AC_Ring_Osc_OFF_STS | Required | Yes | pmc0: SATAPLL_OFF_STS | Required | Yes | pmc0: CSME_PG_STS | Required | Yes | pmc0: SATA_PG_STS | Required | Yes | pmc0: xHCI_PG_STS | Required | Yes | pmc0: UFSX2_PG_STS | Required | Yes | pmc0: OTG_PG_STS | Required | Yes | pmc0: SPA_PG_STS | Required | Yes | pmc0: SPB_PG_STS | Required | Yes | pmc0: SPC_PG_STS | Required | | pmc0: THC0_PG_STS | Required | Yes | pmc0: THC1_PG_STS | Required | Yes | pmc0: GBETSN_PG_STS | Required | Yes | pmc0: GBE_PG_STS | Required | Yes | pmc0: LPSS_PG_STS | Required | Yes | pmc0: xHCI0_D3_STS | Required | Yes | pmc0: xDCI1_D3_STS | Required | Yes | pmc0: IS_D3_STS | Required | Yes | pmc0: GBE_TSN_D3_STS | Required | Yes | pmc0: CPU_C10_REQ_STS_0 | Required | Yes | pmc0: MPHY_Core_DL_REQ_STS_16 | Required | | pmc0: Break-even_En_REQ_STS_17 | Required | Yes | pmc0: Auto-demo_En_REQ_STS_18 | Required | Yes | pmc0: Int_Timer_SS_Wake0_Pol_STS | Required | | pmc0: Int_Timer_SS_Wake1_Pol_STS | Required | | pmc0: Int_Timer_SS_Wake2_Pol_STS | Required | | pmc0: Int_Timer_SS_Wake3_Pol_STS | Required | | pmc0: Int_Timer_SS_Wake4_Pol_STS | Required | | pmc0: Int_Timer_SS_Wake5_Pol_STS | Required | | On 6.5: pmc0: MPHY_Core_DL_REQ_STS_16 | Required | | pmc0: SPC_PG_STS | Required | | pmc0: PCIe/USB3.1_Gen2PLL_OFF_STS | Required | | have status set to 'Yes' ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-38-generic 6.8.0-38.38 ProcVersionSignature: Ubuntu 6.8.0-38.38-generic 6.8.8 Uname: Linux 6.8.0-38-generic x86_64 ApportVersion: 2.28.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/seq: kstoilov 2634 F.... pipewire /dev/snd/controlC0: kstoilov 2634 F.... pipewire kstoilov 2641 F.... wireplumber CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Jul 10 21:26:37 2024 InstallationDate: Installed on 2023-05-04 (433 days ago) InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223) MachineType: HP HP Spectre x360 Convertible 14-ea1xxx ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-38-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.8.0-38-generic N/A linux-backports-modules-6.8.0-38-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.1 SourcePackage: linux UpgradeStatus: Upgraded to noble on 2024-07-07 (3 days ago) dmi.bios.date: 04/03/2024 dmi.bios.release: 15.33 dmi.bios.vendor: AMI dmi.bios.version: F.33 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 89DB dmi.board.vendor: HP dmi.board.version: 40.65 dmi.chassis.type: 31 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.ec.firmware.release: 40.65 dmi.modalias: dmi:bvnAMI:bvrF.33:bd04/03/2024:br15.33:efr40.65:svnHP:pnHPSpectrex360Convertible14-ea1xxx:pvr:rvnHP:rn89DB:rvr40.65:cvnHP:ct31:cvrChassisVersion:sku457Q6AVT#ABA: dmi.product.family: 103C_5335KV HP Spectre dmi.product.name: HP Spectre x360 Convertible 14-ea1xxx dmi.product.sku: 457Q6AVT#ABA dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2072679/+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
