Recently my touchpad has stopped working. All I did was repartition my drive. After that it seems like the touchpad is not even detected as some device. It works fine in BIOS/UEFI and Live USB and is not disabled in BIOS.
I tried different Kernels 5.10, 5.13 (currently using), 5.14
libinput debug-events
-event2 DEVICE_ADDED Power Button seat0 default group1 cap:k
-event0 DEVICE_ADDED Power Button seat0 default group2 cap:k
-event1 DEVICE_ADDED Lid Switch seat0 default group3 cap:S
-event14 DEVICE_ADDED Logitech Advanced Corded Mouse M500s seat0 default group4 cap:p left scroll-nat scroll-button
-event15 DEVICE_ADDED Logitech Advanced Corded Mouse M500s Keyboard seat0 default group4 cap:kp scroll-nat
-event5 DEVICE_ADDED DELL DELL USB Keyboard seat0 default group5 cap:k
-event7 DEVICE_ADDED USB2.0 HD UVC WebCam: USB2.0 HD seat0 default group6 cap:k
-event6 DEVICE_ADDED Asus WMI hotkeys seat0 default group7 cap:k
-event3 DEVICE_ADDED AT Translated Set 2 keyboard seat0 default group8 cap:k
dmesg | egrep '(hid|i2c|elan)'
[ 0.550069] hid: raw HID events driver (C) Jiri Kosina
[ 2.380196] i2c i2c-0: 2/4 memory slots populated (from DMI)
[ 2.381312] i2c i2c-0: Successfully instantiated SPD at 0x52
[ 2.860526] hid-generic 0003:413C:2005.0001: input,hidraw0: USB HID v1.10 Keyboard [DELL DELL USB Keyboard] on usb-0000:00:14.0-5/input0
[ 2.860586] usbcore: registered new interface driver usbhid
[ 2.860589] usbhid: USB HID core driver
[ 28.003139] hid-generic 0003:046D:C093.0002: input,hidraw1: USB HID v1.11 Mouse [Logitech Advanced Corded Mouse M500s] on usb-0000:00:14.0-4/input0
[ 28.060508] hid-generic 0003:046D:C093.0003: input,hiddev96,hidraw2: USB HID v1.11 Keyboard [Logitech Advanced Corded Mouse M500s] on usb-0000:00:14.0-4/input1
cat /sys/bus/i2c/devices/*/name
dummy
dummy
ee1004
SMBus I801 adapter at efa0
Synopsys DesignWare I2C adapter
i915 gmbus dpb
i915 gmbus dpc
i915 gmbus misc
i915 gmbus dpd
AUX A/DDI A/PHY A
NVIDIA i2c adapter 1 at 1:00.0
NVIDIA i2c adapter 2 at 1:00.0