Missing devices and incorrect usage pages with ZSA Moonlander

[netthier]

Note: The linux-static-hidraw backend is not affected by this issue.

let api = HidApi::new().unwrap();

dbg!(
    api
        .device_list()
        .filter(|e| is_my_device(e))
        .map(|e| (e.clone(), e.usage_page(), e.usage()))
        .collect::<Vec<_>>());

where is_my_device compares the PID and VID to that of my Moonlander keyboard. The output is 4 times exactly the following:

    (
        HidDeviceInfo {
            vendor_id: 12951,
            product_id: 6505,
        },
        0,
        0,
    ),

Notably, both the usage page and usage are 0.

Running comparable code in with Python's hid results in the following output:

Python 3.10.4 (main, Mar 23 2022, 23:05:40) [GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import hid
>>> print("\n\n".join(str(i) for i in hid.enumerate()))
{'path': b'/dev/hidraw6', 'vendor_id': 12951, 'product_id': 6505, 'serial_number': '', 'release_number': 1, 'manufacturer_string': 'ZSA', 'product_string': 'Moonlander Mark I', 'usage_page': 65376, 'usage': 97, 'interface_number': 1}

{'path': b'/dev/hidraw5', 'vendor_id': 12951, 'product_id': 6505, 'serial_number': '', 'release_number': 1, 'manufacturer_string': 'ZSA', 'product_string': 'Moonlander Mark I', 'usage_page': 1, 'usage': 2, 'interface_number': 2}

{'path': b'/dev/hidraw5', 'vendor_id': 12951, 'product_id': 6505, 'serial_number': '', 'release_number': 1, 'manufacturer_string': 'ZSA', 'product_string': 'Moonlander Mark I', 'usage_page': 1, 'usage': 1, 'interface_number': 2}

{'path': b'/dev/hidraw4', 'vendor_id': 12951, 'product_id': 6505, 'serial_number': '', 'release_number': 1, 'manufacturer_string': 'ZSA', 'product_string': 'Moonlander Mark I', 'usage_page': 1, 'usage': 128, 'interface_number': 3}

{'path': b'/dev/hidraw4', 'vendor_id': 12951, 'product_id': 6505, 'serial_number': '', 'release_number': 1, 'manufacturer_string': 'ZSA', 'product_string': 'Moonlander Mark I', 'usage_page': 12, 'usage': 1, 'interface_number': 3}

{'path': b'/dev/hidraw4', 'vendor_id': 12951, 'product_id': 6505, 'serial_number': '', 'release_number': 1, 'manufacturer_string': 'ZSA', 'product_string': 'Moonlander Mark I', 'usage_page': 1, 'usage': 6, 'interface_number': 3}

With 7 instead of 4 devices found, and all with non-zero usage pages and usages.

Am I using the Rust API incorrectly here? My goal is to read from and write to the first device in the Python enumeration, which corresponds to QMK's raw HID feature.

[ruabmbua]

Problem was solved by switching to the linux-static-hidraw backend.