Touchpad gestures not working after power off, pt 2

[p-am]

See previous post for system specs.

I’ve experienced the touchpad suddenly failing to do everything but left click and move cursor once the BIOS 3.04 update was released, and then again 3 days after 3.05 was released just last week. But now, it’s happened again, and AFAICT there’s no new release to be had.

I am on 3.05:

$ sudo dnf install lshw dmidecode -y && clear && sudo dmidecode | grep -A3 'Vendor:\|Product:' && sudo lshw -C cpu | grep -A3 'product:\|vendor:'

        Vendor: INSYDE Corp.
        Version: 03.05
        Release Date: 05/23/2025
        ROM Size: 16 MB
       product: Intel(R) Core(TM) Ultra 7 155H
       vendor: Intel Corp.
       physical id: 4
       bus info: cpu@0
       version: 6.170.4

The issue is that the touchpad is detected as a generic device:

$ libinput list-devices

Device:           ImExPS/2 Generic Explorer Mouse
Kernel:           /dev/input/event3
Group:            6
Seat:             seat0, default
Capabilities:     pointer 
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: disabled
Calibration:      n/a
Scroll methods:   button
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   flat *adaptive custom
Rotation:         0.0

Based on the fact that the issue has previously resolved on updates, it really seems like not a hardware issue. Any help appreciated.

[p-am]

I just booted into the BIOS, disabled PS2 mouse emulation, booted into fedora, noticed mouse/keyboard were totally unresponsive, hard-shutoff via power button hold-down, booted into the BIOS again, turned PS2 mouse emulation back to “Auto”, then booted back into fedora and everything appears to be working including all touchpad features.

So switching PS2 emulation setting in BIOS or force shutdown did the trick.