Hello. I have just installed an update for elementary OS Luna 64 bit. After updating and rebooting, it only shows a black screen with a login prompt. If I try to login and start the desktop via the "startx" command, it gives me a fatal server error.
My PC is a ASUS AMD A6-3400M laptop from 2011 with the propriatary AMD/ATI Radeon drivers installed from AMD's website. (The open source AMD Radeon drivers don't work property.)