So, with the help of some guides, I've built a custom Ubuntu 12.04 armhf system (using ubuntu-core as the start of the rootfs http://cdimage.ubuntu.com/ubuntu-core/r ... 4/release/ ). I've been able to get X11 up and running w/ the default fbdev drivers, but have been unable to get the vivante drivers to load. Performance, even for basic screen refreshes/scrolling is pretty terrible. I've grabbed the latest GPU drivers from Timesys: http://repository.timesys.com/buildsour ... -bin-mx6q/ Which includes both sf and hf versions (I'm using the hf of course) and I've installed them, but I get segfaults when trying to run the samples. I also checked out the UDOO wheezy drivers, but that didn't seem to work: http://sourceforge.net/projects/udooboa ... es/Debian/ I haven't poked around w/ X stuff in a long time, I've been looking at some of the recent posts http://jas-hacks.blogspot.com/ has been doing and some discussions at the Freescale Community (like https://community.freescale.com/thread/307061 ) Anyway, to make a long story short, since the UDOO kernel is compiled w/ the GPU stubs and 12.04 runs w/ X11 v1.11, there shouldn't be anything insurmountable for getting this set up right? What are the actual drivers/steps to install and activate the user-space GPU drivers in X11? Does someone from SECO/UDOO or whoever built their 12.04 image mind jumping in?