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

Similar issue. System hangs indefinitely during shutdown or reboot, but only when some USB devices are connected (affects gamepads, mounted USB drives, and devices drawing power/charging via USB). So it can be linked to USB subsystem management in kernel 7.0.0-28-generic, like if something blocks USB shutdown or xhci driver. For me the issue is session-dependent: after logging out and shutting down from the login screen (Mint 22.3, Cinnamon 64 bit), shutdown works. Windows 10 on the same hardware shuts down correctly with the same USB devices connected. USB wakeup settings are disabled. Reverting to kernel 6.17.0-40-generic completely resolves the issue. System (after reverting to 6.17.0-40-generic): 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: MAG B650 TOMAHAWK WIFI (MS-7D75) v: 1.0 serial: <superuser required> UEFI: American Megatrends LLC. v: 1.O0 date: 06/24/2025 CPU: Info: 8-core model: AMD Ryzen 7 7800X3D bits: 64 type: MT MCP cache: L2: 8 MiB Speed (MHz): avg: 3457 min/max: 426/5053 cores: 1: 4405 2: 3585 3: 4405 4: 3728 5: 3665 6: 2983 7: 3671 8: 2983 9: 4400 10: 3598 11: 2983 12: 2983 13: 2983 14: 2983 15: 2983 16: 2983 Graphics: Device-1: AMD driver: amdgpu v: kernel Device-2: AMD Raphael driver: amdgpu v: kernel Device-3: Generalplus GENERAL WEBCAM driver: snd-usb-audio,uvcvideo type: USB 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: 1920x1080 2: 1920x1080 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 9070 (radeonsi gfx1201 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: AMD driver: snd_hda_intel Device-2: AMD Rembrandt Radeon High Definition Audio driver: snd_hda_intel Device-3: AMD Family 17h/19h HD Audio driver: snd_hda_intel Device-4: Generalplus GENERAL WEBCAM driver: snd-usb-audio,uvcvideo type: USB Device-5: Micro Star USB Audio driver: hid-generic,snd-usb-audio,usbhid type: USB API: ALSA v: k6.17.0-40-generic status: kernel-api Server-1: PipeWire v: 1.0.5 status: active Network: Device-1: Realtek RTL8125 2.5GbE driver: r8169 IF: enp14s0 state: up speed: 1000 Mbps duplex: full mac: <filter> Device-2: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter driver: mt7921e IF: wlp15s0 state: down mac: <filter> Bluetooth: Device-1: MediaTek Wireless_Device driver: btusb type: USB Report: hciconfig ID: hci0 state: up address: <filter> bt-v: 5.4 Drives: Local Storage: total: 3.64 TiB used: 605.18 GiB (16.2%) ID-1: /dev/nvme0n1 vendor: KIOXIA model: EXCERIA PLUS G4 SSD size: 931.51 GiB ID-2: /dev/sda vendor: Seagate model: ST3000DM001-1ER166 size: 2.73 TiB type: USB -- 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