** Description changed: Environment: - Distribution: Ubuntu 24.04 LTS + Distribution: Ubuntu 24.04 LTS - Hardware: Lenovo ThinkPad X13 Gen 2a + Hardware: Lenovo ThinkPad X13 Gen 2a - Kernel version working: 6.8.0-139-generic + Kernel version working: 6.8.0-138-generic - Kernel versions affected: 6.8.0-140-generic, 6.8.0-142-generic + Kernel versions affected: 6.8.0-139-generic, 6.8.0-142-generic Summary: - Since upgrading to kernel 6.8.0-140-generic, the system no longer wakes up from suspend/sleep mode. The issue persists on newer versions such as 6.8.0-142-generic. Rolling back to kernel 6.8.0-139-generic completely restores normal suspend/resume behavior. + Since upgrading to kernel 6.8.0-139-generic, the system no longer wakes up from suspend/sleep mode. The issue persists on newer versions such as 6.8.0-142-generic. Rolling back to kernel 6.8.0-138-generic completely restores normal suspend/resume behavior. Steps to reproduce: - Boot into kernel 6.8.0-140-generic (or 6.8.0-142-generic). + Boot into kernel 6.8.0-139-generic (or 6.8.0-142-generic). - Suspend the laptop (either via system menu or closing the lid). + Suspend the laptop (either via system menu or closing the lid). - Attempt to wake the system (pressing a key, power button, or opening + Attempt to wake the system (pressing a key, power button, or opening the lid). Expected result: The system resumes normally, powers the display back on, and unlocks the session. Actual result: The system fails to wake up (black screen, system unresponsive / frozen). A hard power reset is required to restart the machine. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-138-generic 6.8.0-138.138 ProcVersionSignature: Ubuntu 6.8.0-138.138-generic 6.8.12 Uname: Linux 6.8.0-138-generic x86_64 ApportVersion: 2.28.3-0ubuntu0.1 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Sep 23 10:34:41 2026 InstallationDate: Installed on 2023-06-16 (1195 days ago) InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223) MachineType: LENOVO 20XHCTO1WW ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-138-generic root=UUID=fd87738e-56db-4061-b211-191c4dda66e2 ro quiet splash amdgpu.dcdebugmask=0x10 vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: - linux-restricted-modules-6.8.0-138-generic N/A - linux-backports-modules-6.8.0-138-generic N/A - linux-firmware 20240318.git3b128b60.0ubuntu3.1 + linux-restricted-modules-6.8.0-138-generic N/A + linux-backports-modules-6.8.0-138-generic N/A + linux-firmware 20240318.git3b128b60.0ubuntu3.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/16/2026 dmi.bios.release: 1.37 dmi.bios.vendor: LENOVO dmi.bios.version: R1NET67W (1.37) dmi.board.asset.tag: Not Available dmi.board.name: 20XHCTO1WW 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: 1.37 dmi.modalias: dmi:bvnLENOVO:bvrR1NET67W(1.37):bd04/16/2026:br1.37:efr1.37:svnLENOVO:pn20XHCTO1WW:pvrThinkPadX13Gen2a:rvnLENOVO:rn20XHCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20XH_BU_Think_FM_ThinkPadX13Gen2a: dmi.product.family: ThinkPad X13 Gen 2a dmi.product.name: 20XHCTO1WW dmi.product.sku: LENOVO_MT_20XH_BU_Think_FM_ThinkPad X13 Gen 2a dmi.product.version: ThinkPad X13 Gen 2a dmi.sys.vendor: LENOVO
** Summary changed: - [Regression] System fails to resume from suspend on ThinkPad X13 Gen 2a starting with kernel 6.8.0-140-generic + [Regression] System fails to resume from suspend on ThinkPad X13 Gen 2a starting with kernel 6.8.0-139-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2168016 Title: [Regression] System fails to resume from suspend on ThinkPad X13 Gen 2a starting with kernel 6.8.0-139-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2168016/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
