[Bug 2167089] Re: ASUS TUF Gaming A15 FA506NCG intermittently fails to resume reliably from s2idle suspend on Ubuntu 26.04

** Tags added: kernel-daily-bug -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2167089 Title: ASUS TUF Gaming A15 FA506NCG intermittently fails to resume reliably from s2idle suspend on Ubuntu 26.04 Status in linux package in Ubuntu: New Bug description: I am experiencing intermittent suspend/resume failures on Ubuntu 26.04 LTS on an ASUS TUF Gaming A15 FA506NCG. Hardware: * ASUS TUF Gaming A15 FA506NCG * AMD Ryzen 7 7445HS * Integrated AMD Radeon 740M * NVIDIA GeForce RTX 3050 * Current kernel: 7.0.0-31-generic Suspend used to work reliably on this same machine. After system/kernel updates, suspend became unreliable and I eventually stopped using it because intermittent failures made it unsafe for a production/work machine. The system uses s2idle. In successful diagnostic tests, the kernel logs showed a complete suspend/resume sequence: PM: suspend entry (s2idle) ... amdgpu 0000:05:00.0: SMU is resumed successfully! ... PM: suspend exit The AMD PMC debug information after one successful manual suspend also showed: Last S0i3 Status: Success Time to S0i3: 312545 us Time in S0i3: 168579 us Time to resume from S0i3: 187317 us This indicates that the machine is capable of successfully entering and leaving S0i3/s2idle. However, suspend is not reliable in normal use. Intermittently, after suspending the notebook, the system does not return to a reliably usable state and may require a forced power-off. Because the failure is intermittent, individual manual suspend tests can succeed while normal usage later fails. The problem was observed both in normal notebook usage involving lid- close suspend and during the period when suspend was configured as the normal sleep action. Some previously collected kernel logs also contained ACPI/firmware warnings around the power-management environment, including: ACPI Error: AE_NOT_FOUND involving _SB_.PLTF.C00C through C00F and: Firmware Bug: WQ00 data block query control method not found Expected result: Suspend/resume should work reliably every time. The notebook should enter s2idle and restore the existing graphical session without freezes or requiring a forced shutdown. Actual result: Suspend/resume is intermittent. Although some cycles complete successfully according to amd_pmc and kernel logs, other real-world suspend/resume cycles make the notebook unreliable or unusable and can require forced power-off. Regression information: Suspend worked correctly on this same notebook previously. The reliability problems appeared after Ubuntu/kernel updates. I have therefore disabled automatic suspend on AC and battery as a workaround: org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type = 'nothing' org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type = 'nothing' This is a production/work notebook, so repeatedly testing unstable suspend/resume is not a practical workaround. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-31-generic 7.0.0-31.31 ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14 Uname: Linux 7.0.0-31-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: davi 5222 F.... wireplumber /dev/snd/controlC0: davi 5222 F.... wireplumber /dev/snd/controlC1: davi 5222 F.... wireplumber /dev/snd/seq: davi 5199 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Sep 11 09:16:40 2026 HibernationDevice: RESUME=UUID=f8c71c5e-b42c-447c-8bc3-ba41f79feb35 InstallationDate: Installed on 2026-06-12 (91 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: ASUSTeK COMPUTER INC. ASUS TUF Gaming A15 FA506NCG_FA506NCG ProcEnviron: LANG=pt_BR.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 nvidia-drmdrmfb 1 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-31-generic root=UUID=02541ac4-8171-4fd6-8b5a-dfae21ab0c80 ro quiet splash resume=UUID=f8c71c5e-b42c-447c-8bc3-ba41f79feb35 amdgpu.dc=1 crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/11/2026 dmi.bios.release: 5.29 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: FA506NCG.304 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: FA506NCG dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.ec.firmware.release: 3.4 dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrFA506NCG.304:bd03/11/2026:br5.29:efr3.4:svnASUSTeKCOMPUTERINC.:pnASUSTUFGamingA15FA506NCG_FA506NCG:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnFA506NCG:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaASUSTUFGamingA15: dmi.product.family: ASUS TUF Gaming A15 dmi.product.name: ASUS TUF Gaming A15 FA506NCG_FA506NCG dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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