Public bug reported: Lenovo ThinkPad P16s Gen 4 AMD (model 21RX000XMX), AMD Ryzen AI 9 HX PRO 370 BIOS R2XET42W (1.22), EC R2XHT33W Ubuntu 24.04.5 LTS, kernel 6.17.0-1033-oem
Symptom: Intermittently the system fails to resume from s2idle. The power LED keeps blinking slowly (sleep) and the machine does not wake; a forced power-off is required. Observed 2026-10-16 and 2026-10-21, both times after idle-triggered suspend on battery. Other suspend cycles resume fine. Findings: - amd-s2idle (amd-debug-tools) reports: "IOMMU is misconfigured: missing MSFT0201 ACPI device" - The kernel parses IVRS and logs: "AMD-Vi: ivrs, add hid:MSFT0201, uid:1, rdevid:0x60" (0x60 = 0000:00:0c.0) but no MSFT0201 device is enumerated under /sys/bus/acpi/devices. - On a successful resume, the kernel logs repeated "AMD-Vi: Event logged [IO_PAGE_FAULT device=0000:00:0c.0 ...]" i.e. the same rdevid the IVRS assigns to MSFT0201. This matches the failure described by AMD in https://gitlab.freedesktop.org/drm/amd/-/issues/3738#note_2667140 (MSFT0201 is required for suspend to work with IOMMU enabled), which points to a BIOS ACPI table issue. Full amd-s2idle report attached. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.17.0-1033-oem 6.17.0-1033.33 ProcVersionSignature: Ubuntu 6.17.0-1033.33-oem 6.17.13 Uname: Linux 6.17.0-1033-oem x86_64 ApportVersion: 2.28.3-0ubuntu0.1 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Thu Oct 22 08:10:24 2026 InstallationDate: Installed on 2026-10-01 (21 days ago) InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215) MachineType: LENOVO 21RX000XMX ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-1033-oem root=UUID=0518bc90-e80d-42f2-9956-9619dcd571fc ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.17.0-1033-oem N/A linux-backports-modules-6.17.0-1033-oem N/A linux-firmware 20240318.git3b128b60.0ubuntu3.1 SourcePackage: linux-oem-6.17 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/07/2026 dmi.bios.release: 1.22 dmi.bios.vendor: LENOVO dmi.bios.version: R2XET42W (1.22 ) dmi.board.asset.tag: Not Available dmi.board.name: 21RX000XMX dmi.board.vendor: LENOVO dmi.board.version: SDK0T76576 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.12 dmi.modalias: dmi:bvnLENOVO:bvrR2XET42W(1.22):bd09/07/2026:br1.22:efr1.12:svnLENOVO:pn21RX000XMX:pvrThinkPadP16sGen4AMD:rvnLENOVO:rn21RX000XMX:rvrSDK0T76576WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21RX_BU_Think_FM_ThinkPadP16sGen4AMD: dmi.product.family: ThinkPad P16s Gen 4 AMD dmi.product.name: 21RX000XMX dmi.product.sku: LENOVO_MT_21RX_BU_Think_FM_ThinkPad P16s Gen 4 AMD dmi.product.version: ThinkPad P16s Gen 4 AMD dmi.sys.vendor: LENOVO ** Affects: linux-oem-6.17 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug noble suspend-resume wayland-session ** Attachment added: "amd-s2idle report" https://bugs.launchpad.net/bugs/2171838/+attachment/6011528/+files/amd-s2idle-report-2026-10-22.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2171838 Title: ThinkPad P16s Gen 4 AMD (21RX): hang on resume from s2idle – MSFT0201 referenced in IVRS but missing from DSDT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem-6.17/+bug/2171838/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
