Pnp0ca0

ls /sys/bus/acpi/devices/PNP0CA0:00/ </code></pre> <h3>Driver binding</h3> <p>Usually handled by <code>industrialio</code> or platform-specific drivers:</p> <pre><code class="language-bash">cat /sys/bus/acpi/devices/PNP0CA0:00/modalias </code></pre> <h3>Read lux value (if exposed)</h3> <pre><code class="language-bash">cat /sys/bus/iio/devices/iio:device0/in_illuminance_input </code></pre> <h3>Debugging missing ALS</h3> <ul> <li>Update BIOS</li> <li>Check kernel config: <code>CONFIG_ACPI_ALS</code></li> <li>Force reload: <code>modprobe industrialio</code> and <code>modprobe acpi-als</code></li> </ul> <h3>Common issue</h3> <p>If <code>pnp0ca0</code> appears in <code>lspnp</code> but no ALS interface → ACPI firmware may not implement <code>_ALR</code> or <code>_ALI</code> methods.</p> <pre><code> ---

The PNP0CA0 device is not dangerous, but it should be installed correctly to ensure your computer runs efficiently. The easiest fix is almost always downloading the latest directly from your PC or motherboard manufacturer's website. pnp0ca0

Detects cable orientation and handles the specific logic for reversible USB-C connectors. Common Technical Contexts Common Technical Contexts – pnp0ca0 is a PnP

– pnp0ca0 is a PnP ID often associated with ambient light sensors (e.g., on some Dell laptops using hid: PNP0CA0 ). If so, content could include: Look for "Intel Chipset Device Software" or "Serial

The BIOS defines a memory region (mailbox) that the OS driver uses to send commands to the PPM.

). Look for "Intel Chipset Device Software" or "Serial IO" drivers. These packages often contain the necessary ACPI definitions to identify the UCSI device. Check for "USB Connector Manager" Drivers: