ACPI 5.0 Support In Linux: There's A Lot Left To Do

One of the areas where the Linux kernel is still catching up with compared to Windows is power management for some classes of hardware and with that the ACPI support. While there is some level of ACPI 5.0 support, other features are still being tackled for the Advanced Configuration and Power Interface.

Len Brown of Intel's Open-Source Technology Center spoke about ACPI 5.0 support on Linux in San Diego last month during the Linux Plumbers Conference.

The slides for his ACPI Linux presentation have now been uploaded, which are 49 slides that cover low-level power details and the current state of various features being supported within the mainline Linux kernel. Unfortunately, for many of these ACPI items, the Linux state is commonly "not yet implemented", "not supported yet", or are a work in progress. At least though the Linux ACPI state is constantly improving thanks to the continued contributions by Intel and others.

Those wishing to see the ACPI Linux slides from this year's conference can be found here (PDF).

There's also an LPC video of this presentation provided by Ubicast on this page.