Hello,
Do you think this is this the same issue as described in
> https://bugzilla.kernel.org/show_bug.cgi?id=214597 <https://bugzilla.kernel.org/show_bug.cgi?id=214597>? Probably not.
Isn't the interrupt described in the ACPI tables?
Probably not. I am just web developer, i am not 100% sure, but i have not seen anything usable in ACPI tables: https://mireq.linuxos.sk/kernel/p14s_gen2_amd_acpi_tables.tar.xz Most important section with SMBus is here: https://lore.kernel.org/all/CAPoEpV0ZSidL6aMXvB6LN1uS-3CUHS4ggT8RwFgmkzzCiYJ-XQ@xxxxxxxxxxxxxx/ This section looked promising: Scope (_SB.I2CB) { Device (TPNL) { Name (_HID, "XXXX0000") // _HID: Hardware ID Name (_CID, "PNP0C50" /* HID Protocol Device (I2C bus) */) // _CID: Compatible ID Name (_S0W, 0x03) // _S0W: S0 Device Wake State Name (HID2, 0x00) Name (POIO, 0x00) Name (SBFB, ResourceTemplate () { I2cSerialBusV2 (0x0000, ControllerInitiated, 0x00061A80, AddressingMode7Bit, "\\_SB.I2CB", 0x00, ResourceConsumer, _Y0C, Exclusive, ) }) Name (SBFG, ResourceTemplate () { GpioInt (Level, ActiveLow, ExclusiveAndWake, PullNone, 0x0000, "\\_SB.GPIO", 0x00, ResourceConsumer, , ) { // Pin list 0x0005 } }) CreateWordField (SBFB, \_SB.I2CB.TPNL._Y0C._ADR, BADR) // _ADR: Address CreateDWordField (SBFB, \_SB.I2CB.TPNL._Y0C._SPE, SPED) // _SPE: Speed Name (ITML, Package (0x0A) { Package (0x07) { 0x04F3, 0x2A3B, 0x10, 0x01, 0x01, "ELAN901C", 0x01 }, but method _STA returned 0x0 (device not present). There is no activity on pin 5. My device has synaptics trackpoint/touchpad, not elantech. I think, that this section is for touchscreen (not on my device). More infomations to GPIO: Following command does nothing if psmouse is loaded without synaptics_intertouch: gpiomon --num-events=1000 gpiochip0 19 After loading psmouse with intertouch it catches constantly cca 2000 changes/s. There are some changes like two rising / falling edges directly behind each other. I think, that clok is much faster, than gpiomon monitoring speed, catching communication with this command would be useless. I don't know why there is constant communication from trackpoint/touchpad to GPIO 19/20. Maybe some notification mechanism, attention, maybe something which stops after clearing some bit, i dont know. Schematic from Lenovo, documentation or anything useful wold be great, but whithout this i am just guessing. Pins 19/20 should be SCL/SDA of I2C3 (from coreboot, id don't know source of pin description: https://github.com/coreboot/coreboot/blob/cf39336ccfcc363162395bddf65113900aaf19fe/src/soc/amd/cezanne/include/soc/gpio.h#L152
