http://www.thevarguy.com – If you want to use Ubuntu Linux on your tablet, you’re in luck — if you happen to own a Google (NASDAQ: GOOG) Nexus 7, at least. That device, which Canonical has targeted as a proving ground for Ubuntu on mobile devices, can now run the operating system. Here are the details, and some thoughts on Canonical’s approach to conquering the mobile world. As we noted earlier, Canonical has committed to a strong focus on putting Ubuntu on tablets, smartphones, TVs and other emerging hardware devices. And with the development cycle for the next Ubuntu release, version 13.04, starting (IT news)