Acpi Cpl0002 2 Amp-daba3ff Amp-0 Driver -

If you recently updated your BIOS and the sound disappeared, or if you cannot find the driver anywhere, check your BIOS settings (usually by tapping F2 or Del during boot). Ensure that "Onboard Audio" or "Internal Speaker" is enabled. In some cases, updating your BIOS to the latest version will automatically resolve "Unknown Device" errors for ACPI components. Summary of the "AMP-DABA3FF" Hardware Cirrus Logic Function: Smart Audio Amplifier

Based on community bug reports (Ubuntu, Arch, Fedora forums) and kernel mailing lists, the acpi cpl0002 device is most commonly found on: acpi cpl0002 2 amp-daba3ff amp-0 driver

When installing Linux on a laptop known to use CPL0002 (e.g., recent Lenovo, Dell, HP), take these proactive steps: If you recently updated your BIOS and the