Public bug reported:
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.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2167089
Title:
ASUS TUF Gaming A15 FA506NCG intermittently fails to resume reliably
from s2idle suspend on Ubuntu 26.04
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