Hi, We are working with a new consumer laptop model which has physical volume up/down keys on the left side of the chassis. It appears that these buttons are driven by the ACPI0011 Generic Buttons Device defined in section 9.19 of the ACPI spec. The _DSD has entries for the appropriate HID codes for volume up/down which can also be seen in examples here: https://msdn.microsoft.com/en-us/windows/hardware/drivers/hid/acpi-button-device I can't see a Linux driver for this ACPI0011 interface, is one planned? Thanks Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html