hyprland tablet crash reproducing

README.md

How to run

• install libevdev: pip install libevdev

• open rnote (or xournal++)

• run python ./run.py

• Cursor should move the the rnote window and the rnote window will be killed.

  • If the cursor doesn't end up on the rnote window, tweak the ABS_X and ABS_Y values in the code until you hit the right spot.

• If you get a permission error try running as root. It needs write access to /dev/uinput to send the input events

run.py

import libevdev
import time

def create_local_device():
    """
    Create a virtual input device on this host that has the same
    characteristics as a Wacom tablet.

    Returns:
        virtual input device
    """
    import libevdev
    device = libevdev.Device()

    # Set device properties to emulate those of Wacom tablets
    device.name = 'reMarkable pen'

    device.id = {
        'bustype': 0x03, # usb
        'vendor': 0x056a, # wacom
        'product': 0,
        'version': 54
    }

    # Enable buttons supported by the digitizer
    device.enable(libevdev.EV_KEY.BTN_TOOL_PEN)
    device.enable(libevdev.EV_KEY.BTN_TOOL_RUBBER)
    device.enable(libevdev.EV_KEY.BTN_TOUCH)
    device.enable(libevdev.EV_KEY.BTN_STYLUS)
    device.enable(libevdev.EV_KEY.BTN_STYLUS2)
    device.enable(libevdev.EV_KEY.BTN_0)
    device.enable(libevdev.EV_KEY.BTN_1)
    device.enable(libevdev.EV_KEY.BTN_2)

    inputs = (
        # touch inputs
        (libevdev.EV_ABS.ABS_MT_POSITION_X,  0,    20967,   100),
        (libevdev.EV_ABS.ABS_MT_POSITION_Y,  0,    15725,  100),
        (libevdev.EV_ABS.ABS_MT_PRESSURE,    0,    4095,   None),
        (libevdev.EV_ABS.ABS_MT_TOUCH_MAJOR, 0,    255,   None),
        (libevdev.EV_ABS.ABS_MT_TOUCH_MINOR, 0,    255,   None),
        (libevdev.EV_ABS.ABS_MT_ORIENTATION, -127, 127,   None),
        (libevdev.EV_ABS.ABS_MT_SLOT,        0,    31,    None),
        (libevdev.EV_ABS.ABS_MT_TOOL_TYPE,   0,    1,     None),
        (libevdev.EV_ABS.ABS_MT_TRACKING_ID, 0,    65535, None),

        # pen inputs
        (libevdev.EV_ABS.ABS_X,        0,     20967,  100), # cyttps5_mt driver
        (libevdev.EV_ABS.ABS_Y,        0,     15725,  100), # cyttsp5_mt
        (libevdev.EV_ABS.ABS_PRESSURE, 0,     4095,   None),
        (libevdev.EV_ABS.ABS_DISTANCE, 0,     255,    None),
        (libevdev.EV_ABS.ABS_TILT_X,   -6400, 6400,   6400),
        (libevdev.EV_ABS.ABS_TILT_Y,   -6400, 6400,   6400)
    )

    for code, minimum, maximum, resolution in inputs:
        device.enable(
            code,
            libevdev.InputAbsInfo(
                minimum=minimum, maximum=maximum, resolution=resolution
            )
        )

    return device.create_uinput_device()

def main():
    local_device = create_local_device()
    
    events = [
        [1, 320, 1], # BTN TOOL PEN
        [3, 0, 4974], # ABS_X , between 0 and 20967
        [3, 1, 6869], # ABS_Y, between 0 and 15725
        [3, 24, 1973], # ABS_PRESSURE
        [0, 0, 0], # SYN
    ]

    for rawev in events:
        print(f"sending event: {rawev}")
        e_bit = libevdev.evbit(rawev[0], rawev[1])
        e = libevdev.InputEvent(e_bit, value=rawev[2]) 
        local_device.send_events([e])
        time.sleep(0.1)

if __name__ == '__main__':
    main()