Kernel version -bone26.1
This is the latest BeagleBone kernel available via RCN's kernel build scripts (it is identical to the just committed -bone27 kernel except for the version ID of 26.1). There are lots of updates to this kernel so HDMI and USB should hopefully work a lot better.
I have forked RCN's kernel build scripts and and added the ability to pull in the Xenomai patches directly from the Xenomai git repository. The provided kernel was built with the absolute latest available version of the arm Xenomai code, which is soon to become the next Xenomai stable release (waiting mostly for updates to stabilize 3.10). This means you can now build the Xenomai patched kernel used in the MachineKit image completely from the latest source pulled directly from git using a few simple commands.
LinuxCNC Unified Build Candidate
This is the really big change. The LinuxCNC folks are working towards a 2.6 release, which is slated to include something called the "unified build". No, not that one! :) This unified build allows the same LinuxCNC binary code to run on top of different RTOS systems using a DLL layer to hide the gory details of interfacing to Xenomai, RTAI, RT_PREEMPT, or plain old Posix threads.
The current MachineKit branch of LinuxCNC is based on the 2.5 LinuxCNC code-base, and it is virtually impossible (with a reasonable amount of effort) to merge the unified build code into LinuxCNC 2.5.
Not to worry, the hard work has been done already, mostly by John Morris and Michael Haberler (THANKS!!), but the change does mean there is no easy "fast-forward" merge and the git setup is now fundamentally different. The alternate Xenomai RTOS work the MachineKit branch has been built on was happening outside the official LinuxCNC repository on a private git server run by Michael Haberler. The new unified build code is slated for inclusion into LinuxCNC 2.6, and can be found in the official LinuxCNC git repository. The official repo is also available on github, where I have cloned it and added a MachineKit-ubc branch. This branch will track the unified build branch (and the LinuxCNC 2.6 branch as it comes together) but make sure the code builds and runs on the BeagleBone. There may also be a few configuration changes specific to the arm or BeagleBone platform.
I will be keeping the MachineKit and MachineKit-ubc branches in my previous github repository up to date for a while, but these should generally be considered deprecated. If you are not using my pre-built images, please switch to using the new linuxcnc repo as soon as you can.