Public bug reported:
Title: ASUS TUF Gaming A15 FA507XU suspend/resume regression on Ubuntu
26.04 kernel 7.0.0-15, works with 6.17.0-23
Summary
A suspend/resume regression is present after upgrading this ASUS TUF Gaming A15
FA507XU system to Ubuntu 26.04 LTS. With the Ubuntu 26.04 kernel
7.0.0-15-generic, suspend either fails to resume reliably or the machine
appears to remain active/hot with fans running. Booting the older
6.17.0-23-generic kernel is a usable workaround.
System
- Distribution: Ubuntu 26.04 LTS (resolute)
- Machine: ASUSTeK COMPUTER INC. ASUS TUF Gaming A15 FA507XU_FA507XU
- BIOS: FA507XU.314, 04/16/2024
- Current workaround kernel: 6.17.0-23-generic
- Problem kernel observed after upgrade: 7.0.0-15-generic
- Sleep mode: s2idle
Hardware
- AMD Phoenix iGPU: 1002:15bf, driver amdgpu
- NVIDIA RTX 4050 Laptop GPU: 10de:28e1, driver nvidia 595.58.03
- Wi-Fi: MediaTek MT7921 14c3:7961, driver mt7921e
- NVMe: Micron 2400
Observed behavior
After the upgrade to Ubuntu 26.04, suspend/resume on the new kernel
7.0.0-15-generic is unreliable. The laptop may not wake correctly, or it
appears to remain warm with fans active around sleep attempts. On the old
6.17.0-23-generic kernel, the system can suspend and resume more reliably after
disabling noisy wake sources.
Important log pattern from successful old-kernel workaround test
- 18:14:28 PM: suspend entry (s2idle)
- 18:41:32 System returned from sleep operation 'suspend'
- 18:41:32 PM: suspend exit
Relevant log excerpt
```text
May 16 18:14:24 systemd-logind: Power key pressed short.
May 16 18:14:24 systemd-logind: The system will suspend now!
May 16 18:14:26 systemd: Starting nvidia-suspend.service - NVIDIA system
suspend actions...
May 16 18:14:28 systemd: Finished nvidia-suspend.service - NVIDIA system
suspend actions.
May 16 18:14:28 systemd-sleep: Performing sleep operation 'suspend'...
May 16 18:14:28 kernel: PM: suspend entry (s2idle)
May 16 18:41:32 systemd-sleep: System returned from sleep operation 'suspend'.
May 16 18:41:32 kernel: amdgpu 0000:65:00.0: amdgpu: SMU is resumed
successfully!
May 16 18:41:32 kernel: PM: suspend exit
May 16 18:41:33 systemd: Finished nvidia-resume.service - NVIDIA system resume
actions.
```
Workarounds tried
- Removed stale custom GRUB mem_sleep_default=deep override. The machine still
uses s2idle.
- Enabled NVIDIA S0ix power management with NVreg_EnableS0ixPowerManagement=1.
- Tried amdgpu.dcdebugmask=0x10; no useful improvement, reverted.
- Booted old kernel 6.17.0-23-generic and made it default temporarily.
- Disabled noisy wake sources for USB/Thunderbolt/Wi-Fi/touchpad/AC wake; this
improves old-kernel sleep behavior.
Expected behavior
Suspend should enter a low-power state and resume reliably on the current
Ubuntu 26.04 kernel without requiring an older kernel workaround.
Actual behavior
The current 26.04 kernel 7.0.0-15-generic has unreliable suspend/resume on this
ASUS FA507XU hybrid AMD/NVIDIA laptop. The older 6.17.0-23-generic kernel works
better.
Regression
Yes. The issue appeared after moving to Ubuntu 26.04/current kernel. Older
kernel 6.17.0-23-generic is a workaround.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-15-generic 7.0.0-15.15
ProcVersionSignature: Ubuntu 6.17.0-23.23-generic 6.17.13
Uname: Linux 6.17.0-23-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CRDA:
global
country UZ: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat May 16 18:50:44 2026
HibernationDevice: RESUME=UUID=cf49bef0-c037-4ffc-9372-b23883b71855
resume_offset=19507200
InstallationDate: Installed on 2025-12-25 (142 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: ASUSTeK COMPUTER INC. ASUS TUF Gaming A15 FA507XU_FA507XU
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-23-generic
root=UUID=cf49bef0-c037-4ffc-9372-b23883b71855 ro quiet splash
resume=UUID=cf49bef0-c037-4ffc-9372-b23883b71855 resume_offset=19507200
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-05-15 (1 days ago)
dmi.bios.date: 04/16/2024
dmi.bios.release: 5.29
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: FA507XU.314
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: FA507XU
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: 3.9
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrFA507XU.314:bd04/16/2024:br5.29:efr3.9:svnASUSTeKCOMPUTERINC.:pnASUSTUFGamingA15FA507XU_FA507XU:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnFA507XU:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:
dmi.product.family: ASUS TUF Gaming A15
dmi.product.name: ASUS TUF Gaming A15 FA507XU_FA507XU
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug hw-specific kernel-bug nvidia regression-release
resolute suspend-resume wayland-session
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https://bugs.launchpad.net/bugs/2152776
Title:
ASUS TUF Gaming A15 FA507XU suspend/resume regression on Ubuntu 26.04
kernel 7.0.0-15, works with 6.17.0-23
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