00-INDEX - This file acer-wmi.txt - information on the Acer Laptop WMI Extras driver. laptop-mode.txt - how to conserve battery power using laptop-mode. sony-laptop.txt - Sony Notebook Control Driver (SNC) Readme. sonypi.txt - info on Linux Sony Programmable I/O Device support. thinkpad-acpi.txt - information on the (IBM and Lenovo) ThinkPad ACPI Extras driver.