Public bug reported:
The Ubuntu 26.04 and its flavors miss the ACPI Lid open/close event. As
a result, the note PC cannot suspend when lid is closed.
I expect PC suspend when the lid is closed.
## Hardware and distro
Hardware : Fujitsu FMV Lifebook U9312
Distro which reproduce the problem:
- Ubuntu 26.04 ( Live CD )
- Kubuntu 26.04 ( Installed & Live CD )
- Lubuntu 26.04 ( Live CD )
Distro which works without problem:
- Ubuntu 25.10 ( Live CD )
- Kubuntu 25.10 ( Live CD )
## Investigation
I have investigated message logs of several layer on Ubuntu 26.04 and 25.10.
This investigation is done with Live CD.
| Log | Ubuntu 25.10 | Ubuntu 26.04 |
|----------------------------|---------------------|---------------------|
| dmesg | Lid switch detected | Lid switch detected |
| acpi_listen | Lid events detected | Events NOT detected |
| journald -u systemd-logind | Lid events detected | Events NOT detected |
While the Lid switch is detected, Ubuntu 26.04 doesn't listen to the
ACPI Lid event.
## Extra information
ubuntu@ubuntu:~$ lsb_release -rd
Description: Ubuntu 26.04 LTS
Release: 26.04
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: pm-utils 1.4.1-21build1
ProcVersionSignature: Ubuntu 7.0.0-14.14-generic 7.0.0
Uname: Linux 7.0.0-14-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 26.04.2
CloudArchitecture: x86_64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud)
CurrentDesktop: ubuntu:GNOME
Date: Mon May 18 06:01:44 2026
LiveMediaBuild: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
PackageArchitecture: all
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: pm-utils
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: pm-utils (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2152876
Title:
Ubuntu 26.04 misses the ACPI Lid event
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