I double-checked the BIOS on my ASUS TUF Gaming A15 (FA506NFR) — there are no visible GPU/MUX or graphics configuration settings, so the integrated AMD GPU cannot be manually enabled or switched. The system only shows standard power and boot options, no “Hybrid” or “Discrete GPU” toggle.
As requested, I tested again with amd_iommu=off added to the kernel command line. Here are the steps and commands I followed: sudo nano /etc/default/grub # Changed this line: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" # To this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amd_iommu=off" sudo update-grub sudo reboot amd-s2idle test result file attached -------------------------------------------------------------- for missing AMD GPU PCI I didn't touch the BIOS, it's a new laptop, installed windows at first then installed ubuntu with dual boot. for confirmation do you want me to run "reset BIOS defaults" and text again ? for windows sleep works with noted things, (keyboard light pulses, fan randomly runs on too high speed for long periods). I will look for SleepStudy and Armoury Crate in next comment. thanks ** Attachment added: "amd-s2idle-report-2025-10-08.txt" https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.14/+bug/2126897/+attachment/5916489/+files/amd-s2idle-report-2025-10-08.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.14 in Ubuntu. https://bugs.launchpad.net/bugs/2126897 Title: Asus TUF Gaming A15 (FA506NFR) fails to wake from suspend — stuck on black screen (Ubuntu 24.04.3, kernel 6.14.0-33) Status in linux-hwe-6.14 package in Ubuntu: New Bug description: On my Asus TUF Gaming A15 FA506NFR laptop (AMD Ryzen CPU), Ubuntu 24.04.3 LTS cannot wake up properly after suspend. When resuming from sleep, the screen remains black and the system becomes unresponsive, requiring a hard reboot. Steps to reproduce: 1- Close the lid or choose “Suspend” from the power menu. 2- Wait until the system fully sleeps. 3- Try to wake using keyboard, touchpad, or power button. 4- The fans spin up but the screen stays off and system doesn’t respond. Expected: System should resume from suspend normally. Actual: Black screen, no response, hard power-off needed. Debugging tried: 1- Verified current sleep mode → cat /sys/power/mem_sleep → output: [s2idle] 2- Tried adding kernel parameter: mem_sleep_default=deep → no effect 3- BIOS version: FA506NFR.304 (Jan 2025) 4- Kernel version: 6.14.0-33-generic 5- Ubuntu version: 24.04.3 LTS 6- Secure Boot: Enabled (also tested disabled → no change) 7- NVIDIA drivers uninstalled → issue persists (so unrelated to GPU) 8- BIOS doesn’t expose S3 sleep option. Additional info: This seems related to ACPI / s2idle sleep mode on Ryzen laptops. Many Asus TUF users report identical issues — forcing “deep” mode (S3) is ignored. Please advise if S3 is blocked at firmware level or requires kernel parameter updates. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.14.0-33-generic 6.14.0-33.33~24.04.1 ProcVersionSignature: Ubuntu 6.14.0-33.33~24.04.1-generic 6.14.11 Uname: Linux 6.14.0-33-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: osamahayyan 2449 F.... wireplumber /dev/snd/controlC0: osamahayyan 2449 F.... wireplumber /dev/snd/seq: osamahayyan 2445 F.... pipewire CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Oct 6 07:23:24 2025 InstallationDate: Installed on 2025-10-03 (3 days ago) InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215) MachineType: ASUSTeK COMPUTER INC. ASUS TUF Gaming A15 FA506NFR_FA506NFR ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 nvidia-drmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-33-generic root=UUID=e0a7e552-bf80-46ab-bf36-bca547f4a73b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.14.0-33-generic N/A linux-backports-modules-6.14.0-33-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.17 SourcePackage: linux-hwe-6.14 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/08/2025 dmi.bios.release: 5.24 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: FA506NFR.304 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: FA506NFR 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.:bvrFA506NFR.304:bd01/08/2025:br5.24:efr3.4:svnASUSTeKCOMPUTERINC.:pnASUSTUFGamingA15FA506NFR_FA506NFR:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnFA506NFR:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku: dmi.product.family: ASUS TUF Gaming A15 dmi.product.name: ASUS TUF Gaming A15 FA506NFR_FA506NFR dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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