[Bug 2161289] Re: Kernel 7.0.0-28-generic: system hangs on shutdown/reboot on ThinkPad T14 Gen 2 AMD

Same Issue here systemd[1]: Reached target final.target - Late Shutdown Services. systemd[1]: systemd-poweroff.service: Deactivated successfully. systemd[1]: Finished systemd-poweroff.service - System Power Off. systemd[1]: Reached target poweroff.target - System Power Off. systemd[1]: Shutting down. But system hangs, tower leds stay on and fans spin, no video output, requiring to hold the power button for five seconds. System: Kernel: 6.17.0-40-generic arch: x86_64 bits: 64 Desktop: Cinnamon v: 6.6.9 Distro: Linux Mint 22.3 Zena Machine: Type: Desktop Mobo: Micro-Star model: B760 GAMING PLUS WIFI (MS-7D98) v: 3.0 serial: <superuser required> UEFI: American Megatrends LLC. v: H.A0 date: 09/30/2024 CPU: Info: 10-core (6-mt/4-st) model: 12th Gen Intel Core i5-12600K bits: 64 type: MST AMCP cache: L2: 9.5 MiB Speed (MHz): avg: 802 min/max: 800/4900:3600 cores: 1: 800 2: 800 3: 799 4: 800 5: 800 6: 800 7: 800 8: 800 9: 800 10: 800 11: 800 12: 839 13: 800 14: 800 15: 800 16: 800 Graphics: Device-1: AMD Navi 32 [Radeon RX 7700 XT / 7800 XT] driver: amdgpu v: kernel Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X: loaded: amdgpu dri: radeonsi gpu: amdgpu resolution: 1: 2560x1440 2: 1920x1080~144Hz API: EGL v: 1.5 drivers: kms_swrast,radeonsi,swrast platforms: gbm,x11,surfaceless,device API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.2.8-0ubuntu0.24.04.2 renderer: AMD Radeon RX 7700 XT (radeonsi navi32 LLVM 20.1.2 DRM 3.64 6.17.0-40-generic) API: Vulkan v: 1.3.275 drivers: N/A surfaces: xcb,xlib Audio: Device-1: Intel Raptor Lake High Definition Audio driver: snd_hda_intel Device-2: AMD Navi 31 HDMI/DP Audio driver: snd_hda_intel API: ALSA v: k6.17.0-40-generic status: kernel-api Server-1: PipeWire v: 1.0.5 status: active Network: Device-1: Intel Raptor Lake-S PCH CNVi WiFi driver: iwlwifi IF: wlo1 state: down mac: <filter> Device-2: Realtek RTL8125 2.5GbE driver: r8169 IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: <filter> Bluetooth: Device-1: Intel AX211 Bluetooth driver: btusb type: USB Report: hciconfig ID: hci0 state: up address: <filter> bt-v: 5.3 Drives: Local Storage: total: 931.51 GiB used: 30.82 GiB (3.3%) ID-1: /dev/nvme0n1 vendor: Western Digital model: WD BLACK SN850X 1000GB size: 931.51 GiB Partition: ID-1: / size: 91.64 GiB used: 30.79 GiB (33.6%) fs: ext4 dev: /dev/nvme0n1p5 ID-2: /boot/efi size: 196 MiB used: 37.8 MiB (19.3%) fs: vfat dev: /dev/nvme0n1p1 Swap: ID-1: swap-1 type: file size: 2 GiB used: 0 KiB (0.0%) file: /swapfile Sensors: System Temperatures: cpu: 48.0 C mobo: N/A gpu: amdgpu temp: 57.0 C Fan Speeds (rpm): N/A gpu: amdgpu fan: 476 Info: Memory: total: 32 GiB note: est. available: 31.12 GiB used: 4.64 GiB (14.9%) Processes: 423 Uptime: 19m Shell: Bash inxi: 3.3.34 Fixed by switching back to Kernel 6.17.0-40. -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161289 Title: Kernel 7.0.0-28-generic: system hangs on shutdown/reboot on ThinkPad T14 Gen 2 AMD Status in linux package in Ubuntu: Confirmed Bug description: ## Summary On Ubuntu 26.04 LTS, kernel 7.0.0-28-generic fails to shutdown or reboot properly on ThinkPad T14 Gen 2 (Ryzen 5 Pro). System reaches final.target, black screen, but power LED stays on indefinitely. ## Affected Hardware - ThinkPad T14 Gen 2 (Type 20UF) - AMD Ryzen 5 Pro 5650U - Integrated AMD Vega Graphics (amdgpu) ## Affected Kernel - 7.0.0-28-generic: FAILS - 7.0.0-27-generic: WORKS ## Steps to Reproduce 1. Boot kernel 7.0.0-28 2. Attempt shutdown or reboot via UI or CLI 3. System hangs with black screen, power LED remains on 4. Requires force power-off ## Root Cause systemd successfully reaches shutdown.target and final.target (journalctl confirms all services stopped cleanly). System hangs at kernel ACPI power management stage, likely amdgpu driver regression in 7.0.0-28. ## Workaround Downgrade to kernel 7.0.0-27-generic. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-27-generic 7.0.0-27.27 ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6 Uname: Linux 7.0.0-27-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckMismatches: ./boot/grub/grub.cfg CasperMD5CheckResult: fail CurrentDesktop: ubuntu:GNOME Date: Mon Jul 20 00:18:57 2026 InstallationDate: Installed on 2026-05-08 (72 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: LENOVO 20XLS0T500 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-kitty XDG_RUNTIME_DIR=<set> ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-27-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro pcie_aspm=off pci=noaer acpi=debug crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/16/2026 dmi.bios.release: 1.34 dmi.bios.vendor: LENOVO dmi.bios.version: R1MET64W (1.34 ) dmi.board.asset.tag: Not Available dmi.board.name: 20XLS0T500 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.34 dmi.modalias: dmi:bvnLENOVO:bvrR1MET64W(1.34):bd04/16/2026:br1.34:efr1.34:svnLENOVO:pn20XLS0T500:pvrThinkPadT14Gen2a:rvnLENOVO:rn20XLS0T500:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20XL_BU_Think_FM_ThinkPadT14Gen2a:pfaThinkPadT14Gen2a: dmi.product.family: ThinkPad T14 Gen 2a dmi.product.name: 20XLS0T500 dmi.product.sku: LENOVO_MT_20XL_BU_Think_FM_ThinkPad T14 Gen 2a dmi.product.version: ThinkPad T14 Gen 2a dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161289/+subscriptions