Public bug reported:
After upgrading to Ubuntu 26.04 LTS (kernel 7.0.0-38-generic), the
system fails to enter a proper low-power state on suspend. The display
turns off but the fans keep running, indicating the hardware is not
actually suspended. On wake, the system does not resume — a long-press
of the power button (hard reset) is the only way to recover. This makes
quick suspend/unsuspend cycles impossible without losing work.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 14 22:25:37 2026
InstallationDate: Installed on 2026-01-16 (271 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
MachineType: Micro-Star International Co., Ltd. MS-7C95
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic
root=UUID=2daee46f-556e-459d-9573-2ebe6cbe5c31 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-10-02 (12 days ago)
dmi.bios.date: 09/02/2025
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 2.N0
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B550M PRO-VDH (MS-7C95)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr2.N0:bd09/02/2025:br5.17:svnMicro-StarInternationalCo.,Ltd.:pnMS-7C95:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnB550MPRO-VDH(MS-7C95):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7C95
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2170835
Title:
[s2idle] Suspend incomplete (fans remain on) and resume fails — hard
reset required — AMD Cezanne APU / MSI MS-7C95
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