Public bug reported:
After the automated package updates on May 16th, which installed kernel
linux-image-6.8.0-117-generic, the native Night Light feature stopped
working completely across my triple-monitor setup.
The Settings -> Displays panel displays the error: "Night light
unavailable this could be the result of the graphics driver being used,
or the desktop being used remotely."
System details:
OS: Ubuntu 24.04 LTS
Session Type: Wayland (XDG_SESSION_TYPE=wayland)
GPU: NVIDIA GeForce GTX 1660 SUPER (using proprietary nvidia driver)
Displays: 3 monitors connected
NVIDIA DRM Modeset: Active
(/sys/module/nvidia_drm/parameters/modeset returns Y)
Steps to reproduce:
Boot into Ubuntu using kernel 6.8.0-117-generic with three active
monitors on an NVIDIA GPU under a Wayland session.
Open Settings -> Displays -> Night Light.
Expected result: Night Light toggle should be interactive and apply color
temperature adjustments across all active monitors.
Actual result: Night Light is completely greyed out with a generic
driver/remote desktop warning banner.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-117-generic 6.8.0-117.117
ProcVersionSignature: Ubuntu 6.8.0-117.117-generic 6.8.12
Uname: Linux 6.8.0-117-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: denis 8164 F.... wireplumber
/dev/snd/controlC1: denis 8164 F.... wireplumber
/dev/snd/controlC0: denis 8164 F.... wireplumber
/dev/snd/seq: denis 8159 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun May 17 22:54:15 2026
InstallationDate: Installed on 2023-01-27 (1206 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64
(20220809.1)
MachineType: ASUS System Product Name
ProcFB: 0 simpledrmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-117-generic
root=UUID=8e8587e3-29b6-4c96-af18-62f6e0c08779 ro quiet splash
nvidia-drm.modeset=1 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.8.0-117-generic N/A
linux-backports-modules-6.8.0-117-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.27
SourcePackage: linux
UpgradeStatus: Upgraded to noble on 2024-08-31 (624 days ago)
dmi.bios.date: 10/27/2022
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2806
dmi.board.asset.tag: Default string
dmi.board.name: PRIME B550M-A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2806:bd10/27/2022:br5.17:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEB550M-A:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: ASUS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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https://bugs.launchpad.net/bugs/2152858
Title:
Night Light broken / greyed out on triple-monitor NVIDIA setup after
upgrade to kernel 6.8.0-117-generic
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