Public bug reported:
After upgrading from linux-image-6.17.0-40-generic to
linux-image-7.0.0-28-generic
(HWE kernel, Ubuntu 24.04), the ScreenPad secondary display on ASUS ZenBook
UX534FAC (UX534FAC.307 BIOS) stopped being detected entirely.
- xrandr -q shows no second output at all (not even "disconnected")
- dmesg shows no attempt to initialize a second panel
- The F6 key, which normally cycles Touchpad / Off / ScreenPad modes,
only shows 2 modes (Touchpad / Off) instead of 3
- BIOS "Internal Pointing Device" option is also missing from Advanced menu
- Reverting to kernel 6.17.0-40-generic fully restores ScreenPad functionality
and the 3-mode F6 cycle
This points to a regression in asus-nb-wmi/asus-wmi between these kernel
versions.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.17.0-40-generic 6.17.0-40.40~24.04.1
ProcVersionSignature: Ubuntu 6.17.0-40.40~24.04.1-generic 6.17.13
Uname: Linux 6.17.0-40-generic x86_64
ApportVersion: 2.28.2-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: dwi 3684 F.... wireplumber
/dev/snd/seq: dwi 3679 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 20 20:55:17 2026
InstallationDate: Installed on 2025-09-16 (307 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 248a:8514 Maxxter Wireless Receiver
Bus 001 Device 003: ID 13d3:56cb IMC Networks USB2.0 HD IR UVC WebCam
Bus 001 Device 004: ID 8087:0026 Intel Corp. AX201 Bluetooth
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: ASUSTeK COMPUTER INC. ZenBook UX534FAC_UX534FA
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-40-generic
root=UUID=6db34e4f-78c8-40fe-8e23-4c1659a66e6e ro quiet splash
intel_idle.max_cstate=4 vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.17.0-40-generic N/A
linux-backports-modules-6.17.0-40-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.27
SourcePackage: linux-hwe-6.17
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/20/2020
dmi.bios.release: 5.15
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX534FAC.307
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX534FAC
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrUX534FAC.307:bd04/20/2020:br5.15:svnASUSTeKCOMPUTERINC.:pnZenBookUX534FAC_UX534FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX534FAC:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:
dmi.product.family: ZenBook
dmi.product.name: ZenBook UX534FAC_UX534FA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux-hwe-6.17 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2161351
Title:
ScreenPad on ASUS ZenBook UX534FAC broken after kernel upgrade
6.17.0-40 → 7.0.0-28
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