I am relatively new to GNU/Linux and BeagleBone Black (I have only learnt about SSH and Bash about a week ago). I have a 4.3" LCD Cape (4DCAPE-43T) as well as a 7" LCD Cape (4DCAPE-70T) which I am trying to get working with the Debian 7.9 image available from http://beagleboard.org/latest-images. The LCD Capes work fine with the Debian 7.5 image (I have not yet tried the 7.8 image), but with 7.9 all I get is a cursor on a black screen. The cursor is responsive (follows touches), but nothing else is displayed on the screen. The calibration program also runs correctly on first boot by the way. I have also tried the 8.4 image but have not had any luck with it either. I have run apt-get update on 7.9 successfully, however this does not seem to have resolved anything.
Any advice will be appreciated, I am keen to learn!