"The organisers of the Linux Plumbers Conference (LPC) 2012, which was held at the end of August in San Diego, have released videos, notes and presentation slides from the conference presentations. The talks are primarily concerned with Linux software that deals with the interaction between hardware and the user interface." Source:LPC videos on Linux & UEFI, ARM and ACPI 5.0
Linux Plumbers 2012 Slides & Videos Now Available