I have trouble figuring how to use the intel integrated chip on my retina 15". However, it is a lead that 13.04 works now for Apple Macbookpro retina 15 the base unti.
Ubuntu 13.04 Daily Build Macbook Pro Retina documentation and install guide () Ubuntu 13.04, 3.8 kernel supports Macbookpro retina now as well, I suppose. That lead to very flaky wifi and even USB wifi sticks didn't work as reliable as on any other Linux box I tested them. I didn't investigate yet, but the default kernel options may play a role: e.g., initially, I started from the kernel config of the 12.04 Ubuntu kernel and just used the defaults for any of the numerous newly introduced config options in the more recent linux kernel versions. After suspend/resume a 'iwlist scan' and at the worst a 'rmmod b43/modprobe b43/iwlist scan' does the trick.