apport information ** Tags added: apport-collected resolute
** Description changed: After upgrading to Ubuntu 26.04 LTS (kernel 7.0.0-38-generic), the system fails to enter a proper low-power state on suspend. The display turns off but the fans keep running, indicating the hardware is not actually suspended. On wake, the system does not resume — a long-press of the power button (hard reset) is the only way to recover. This makes quick suspend/unsuspend cycles impossible without losing work. OS: Ubuntu 26.04 LTS "Resolute Raccoon" Kernel: 7.0.0-38-generic Suspend method: s2idle (confirmed via cat /sys/power/mem_sleep) Motherboard: MSI MS-7C95 CPU/GPU: AMD Cezanne (Radeon Vega Mobile, amdgpu driver) BIOS: 2.N0 (09/02/2025) Steps to reproduce: - Suspend the system (systemctl suspend or close lid). - Display turns off; fans continue running (system is not in a low-power state). - Attempt to wake (power button / open lid). - System does not wake — no response. - Only recovery: hold power button until forced shutdown, then power on again. - Expected behaviour: - System enters a genuine low-power state (fans stop or near-stop) and resumes normally on power button / lid open. Regression: This did not occur before the upgrade to Ubuntu 26.04 LTS. It appeared immediately after the update. + --- + ProblemType: Bug + ApportVersion: 2.34.1-0ubuntu0.1 + Architecture: amd64 + CasperMD5CheckResult: pass + CurrentDesktop: ubuntu:GNOME + DistroRelease: Ubuntu 26.04 + InstallationDate: Installed on 2026-01-16 (273 days ago) + InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1) + MachineType: Micro-Star International Co., Ltd. MS-7C95 + Package: linux (not installed) + ProcEnviron: + LANG=en_US.UTF-8 + PATH=(custom, no user) + SHELL=/bin/bash + TERM=xterm-256color + ProcFB: 0 amdgpudrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic root=UUID=2daee46f-556e-459d-9573-2ebe6cbe5c31 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M + ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14 + RfKill: + + Tags: resolute + Uname: Linux 7.0.0-38-generic x86_64 + UpgradeStatus: Upgraded to resolute on 2026-10-02 (14 days ago) + UserGroups: N/A + _MarkForUpload: True + dmi.bios.date: 09/02/2025 + dmi.bios.release: 5.17 + dmi.bios.vendor: American Megatrends International, LLC. + dmi.bios.version: 2.N0 + dmi.board.asset.tag: To be filled by O.E.M. + dmi.board.name: B550M PRO-VDH (MS-7C95) + dmi.board.vendor: Micro-Star International Co., Ltd. + dmi.board.version: 1.0 + dmi.chassis.asset.tag: To be filled by O.E.M. + dmi.chassis.type: 3 + dmi.chassis.vendor: Micro-Star International Co., Ltd. + dmi.chassis.version: 1.0 + dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr2.N0:bd09/02/2025:br5.17:svnMicro-StarInternationalCo.,Ltd.:pnMS-7C95:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnB550MPRO-VDH(MS-7C95):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.: + dmi.product.family: To be filled by O.E.M. + dmi.product.name: MS-7C95 + dmi.product.sku: To be filled by O.E.M. + dmi.product.version: 1.0 + dmi.sys.vendor: Micro-Star International Co., Ltd. ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/2170836/+attachment/6009757/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2170836 Title: Suspend Incomplete and Hard Reset Required To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2170836/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
