A/B testing can be done with live usb sticks with Ubuntu 24.04.3 (works as intended) and Ubuntu 25.04 (reported problem appears)
-- 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/2125805 Title: Ubuntu 25: xe graphics runtime suspend unsupported, causing high battery drain during s2idle Status in linux package in Ubuntu: New Bug description: Affected version: Ubuntu 25.04 Not affected: Ubuntu 24.04.3 Summary: Experiencing high s2idle battery drain; GPU runtime PM does not suspend My laptop drains ~1,3%/h during s2idle, which is unexpectedly high. The hardware is capable of reaching ~0.3%/h (tested with Ubuntu 24.04.3 live iso with 6.14.0, same BIOS/Firmware/EC) Suspected cause: GPU does not go into properly suspend (neither when display is blank nor in s2idle) Intel xe GPU runtime_status stays "unsupported" and runtime_suspended_time stays 0 during screen blank and during s2idle tests. Hardware: Lenovo ThinkPad T14s Gen6 Intel Ultra 5 228V (Lunar Lake). Hardware does not support "deep" sleep (S3) How to reproduce: Read `/sys/class/drm/card1/device/power/runtime_status` `/sys/class/drm/card1/device/power/runtime_suspended_time` sleep for 10 minutes `rtcwake -m mem -s 600` Read both parameters again runtime_status is "unsupported", should be ""active"" during normal operation and "suspend" when it is supending (e.g. blank screen or during s2idle) runtime_suspended_time is and stays 0, should increase during suspending The same bug is present on Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=2399801 ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: linux-image-6.14.0-15-generic 6.14.0-15.15 ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0 Uname: Linux 6.14.0-15-generic x86_64 NonfreeKernelModules: zfs ApportVersion: 2.32.0-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2423 F.... pipewire ubuntu 2425 F.... wireplumber /dev/snd/seq: ubuntu 2423 F.... pipewire CasperMD5CheckResult: pass CasperVersion: 25.04.1 CloudArchitecture: x86_64 CloudID: nocloud CloudName: unknown CloudPlatform: nocloud CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud) CurrentDesktop: ubuntu:GNOME Date: Fri Sep 26 20:50:43 2025 IwDevWlp0s20f3Link: Not connected. LiveMediaBuild: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3) MachineType: LENOVO 21QYS0BW00 ProcEnviron: LANG=C.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 xedrmfb ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz --- quiet splash RelatedPackageVersions: linux-restricted-modules-6.14.0-15-generic N/A linux-backports-modules-6.14.0-15-generic N/A linux-firmware 20250317.git1d4c88ee-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/28/2025 dmi.bios.release: 1.7 dmi.bios.vendor: LENOVO dmi.bios.version: N4IET21W (1.07 ) dmi.board.asset.tag: Not Available dmi.board.name: 21QYS0BW00 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.7 dmi.modalias: dmi:bvnLENOVO:bvrN4IET21W(1.07):bd07/28/2025:br1.7:efr1.7:svnLENOVO:pn21QYS0BW00:pvrThinkPadT14sGen6:rvnLENOVO:rn21QYS0BW00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21QY_BU_Think_FM_ThinkPadT14sGen6: dmi.product.family: ThinkPad T14s Gen 6 dmi.product.name: 21QYS0BW00 dmi.product.sku: LENOVO_MT_21QY_BU_Think_FM_ThinkPad T14s Gen 6 dmi.product.version: ThinkPad T14s Gen 6 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2125805/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
