Public bug reported:
HP Pavilion Gaming Laptop 15 (Ryzen 5 4600H, AMD Raven/Picasso platform)
Touchpad ACPI ID: ELAN0718 (I2C HID device), also enumerated as legacy PS/2
(ETPS/2 Elantech) via psmouse
psmouse/elantech driver loads without errors and creates input device, but
produces zero events (confirmed via evtest and raw /dev/input/eventX read)
ACPI device ELAN0718:01 exists on i2c bus (i2c-ELAN0718:01) but has no driver
bound, i2c_hid_acpi shows 0 usage
No physical I2C controller PCI device found matching this bus (only i2c_piix4
SMBus for RAM SPD)
Touchpad works fine under Windows on same hardware
Tested: i8042 params, psmouse.elantech_smbus=0, manual driver bind attempts —
none resolved it
Kernel: 7.0.0-28-generic, Ubuntu 26.04 "resolute"
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2161223
Title:
Touchpad (ELAN0718) not working on HP Pavilion Gaming Laptop 15 with
kernel 7.0.0 (Ubuntu 26.04)
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