Public bug reported:
Hi, I did a fresh install of Ubuntu 25.10 (questing) on my Thinkpad X13s
and the Night Light feature is not working (yet). Any help to get this
fixed will be appreciated. Thank you!
Here're basic info from the installation:
fastfetch
OS: Ubuntu Questing Quokka (development branch) aarch64
Host: 21BX0013US (ThinkPad X13s Gen 1)
Kernel: Linux 6.17.0-5-generic
Display (IVO854B): 1920x1200 @ 60 Hz (as 1280x800) in 13" [Built-in]
DE: GNOME 49.0
CPU: Qualcomm Snapdragon 8cx Gen 3 (8) @ 3.00 GHz
GPU: Qualcomm Turnip Adreno (TM) 690 [Integrated]
$ ubuntu-drivers devices
== /sys/devices/platform/interconnect-clk-virt ==
modalias : of:Ninterconnect-clk-virtT(null)Cqcom,sc8280xp-clk-virt
driver : hwe-lenovo-x13s-meta - distro free
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: linux-image-6.17.0-5-generic 6.17.0-5.5
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic aarch64
ApportVersion: 2.33.1-0ubuntu2
Architecture: arm64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: srihari 2696 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 29 21:39:04 2025
InstallationDate: Installed on 2025-09-29 (0 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Daily arm64 (20250528)
Lspci-vt:
-[0002:00]---00.0-[01-ff]----00.0 Shenzhen Unionmemory Information System
Ltd. AM630 PCIe 4.0 NVMe SSD 256GB
-[0006:00]---00.0-[01-ff]----00.0 Qualcomm Technologies, Inc QCNFA765
Wireless Network Adapter
MachineType: LENOVO 21BX0013US
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 msmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-5-generic
root=UUID=e50add26-31c1-48a9-8bbf-5309252592e8 ro clk_ignore_unused
pd_ignore_unused arm64.nopauth quiet splash console=tty0
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
vt.handoff=7
RelatedPackageVersions:
firmware-sof N/A
linux-firmware 20250901.git993ff19b-0ubuntu1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
acpidump:
dmi.bios.date: 06/09/2025
dmi.bios.release: 1.65
dmi.bios.vendor: LENOVO
dmi.bios.version: N3HET93W (1.65 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21BX0013US
dmi.board.vendor: LENOVO
dmi.board.version:
SDK0T76530 WIN
ptal����8
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.23
dmi.modalias:
dmi:bvnLENOVO:bvrN3HET93W(1.65):bd06/09/2025:br1.65:efr1.23:svnLENOVO:pn21BX0013US:pvrThinkPadX13sGen1:rvnLENOVO:rn21BX0013US:rvrSDK0T76530WINptal8:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21BX_BU_Think_FM_ThinkPadX13sGen1:
dmi.product.family: ThinkPad X13s Gen 1
dmi.product.name: 21BX0013US
dmi.product.sku: LENOVO_MT_21BX_BU_Think_FM_ThinkPad X13s Gen 1
dmi.product.version: ThinkPad X13s Gen 1
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 questing wayland-session
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https://bugs.launchpad.net/bugs/2125974
Title:
Night light is not working on Thinkpad X13s with Ubuntu 25.10
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