Public bug reported:
Laptop: MSI Prestige 14H B12UCX
BIOS: E14F1IMS.11E (also reproduced on E14F1IMS.117)
OS: Ubuntu 26.04.1 LTS, kernel 7.0.0-38-generic (also 7.0.0-30)
Touchpad: Synaptics I2C-HID, MSNB0001:00 06CB:CEBD, i2c_designware.0 (PCI
00:15.0)
GPU: Intel Iris Xe + NVIDIA RTX 2050 (proprietary driver 595)
Problem:
The touchpad works for a few seconds after boot, then stops responding.
It briefly works again after plugging/unplugging the charger or opening a fresh
terminal, then stops again.
The same touchpad works fine in Windows 11 on this laptop (dual boot).
Behaviour by graphics mode (prime-select):
- on-demand: works for a few seconds, then dies
- intel (dGPU off): touchpad completely dead
- nvidia (dGPU always on): touchpad stays alive (only workaround found)
Observations when the touchpad is dead:
- The kernel and libinput still list the touchpad device
- No events from libinput debug-events
- /proc/interrupts: the MSNB0001:00 IRQ count does not increase when touching
the pad
- Reading /dev/hidraw0 returns no data
- No errors in dmesg at boot (hid-multitouch binds normally)
- Unbind/bind of i2c_hid_acpi fails after it dies:
"tigerlake-pinctrl INTC1055:00: pin 62 cannot be used as IRQ"
"i2c_hid_acpi i2c-MSNB0001:00: Could not register for MSNB0001:00 interrupt"
Things that did NOT help:
- BIOS update to E14F1IMS.11E
- Forcing runtime PM to "on" for the I2C device, i2c_designware.0 and PCI
00:15.0
- CPU load, and disabling deep C-states (cpuidle state2+)
- Reloading i2c_hid_acpi / hid_multitouch modules
Similar reports on this model: touchpad dying after ~5-15 seconds on
openSUSE, Mint, Fedora and Ubuntu.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lmnotsmurfing 3694 F.... pipewire
lmnotsmurfing 3702 F.... wireplumber
/dev/snd/seq: lmnotsmurfing 3694 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 25 20:33:13 2026
InstallationDate: Installed on 2026-10-23 (2 days ago)
InstallationMedia: Ubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64
(20260826)
MachineType: Micro-Star International Co., Ltd. Prestige 14H B12UCX
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic
root=UUID=c916bbf7-72f4-43fc-96a4-d7d7bf356842 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/28/2024
dmi.bios.release: 1.30
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: E14F1IMS.11E
dmi.board.asset.tag: Default string
dmi.board.name: MS-14F1
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrE14F1IMS.11E:bd03/28/2024:br1.30:svnMicro-StarInternationalCo.,Ltd.:pnPrestige14HB12UCX:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-14F1:rvrREV1.0:cvnMicro-StarInternationalCo.,Ltd.:ct10:cvrN/A:sku14F1.1:pfaPrestige:
dmi.product.family: Prestige
dmi.product.name: Prestige 14H B12UCX
dmi.product.sku: 14F1.1
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2172182
Title:
MSI Prestige 14H B12UCX: I2C-HID touchpad (MSNB0001:00 06CB:CEBD)
stops after a few seconds; only stays alive with NVIDIA dGPU forced on
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2172182/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
