1. 2013-04-29 [3] [ibm-acpi-devel] regulate backlight on X230 and T430 works incorrectly ibm-acpi-dev Igor Gnatenko 2. 2013-04-22 [2] [ibm-acpi-devel] thinkpad_acpi: unhandled HKEY event 0x6050 ibm-acpi-dev Henrique de Moraes Ho