Public bug reported:
In Kernel 6.14 the ambient light sensor on the Macbook Pro 11,5 (2015
15" A1398) model works as expected
In Kernel 6.17 the ambient light sensor no longer works
This appears to be a regression
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: xorg (not installed)
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Nov 14 14:41:30 2025
InstallationDate: Installed on 2025-09-06 (70 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
XDG_RUNTIME_DIR=<set>
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to questing on 2025-09-25 (50 days ago)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing wayland-session
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https://bugs.launchpad.net/bugs/2131555
Title:
Ambient Light sensor regression
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