At least seen here with a 8400m (Dell Symptoms pretty straightforward - boots fine to greeter then nothing but a Desktop image & cursor, both on unity & GS. Nothing is possible once leaving the greeter. Same on current live image > 'Try Me' Works fine with Classic (No Effects) & nvidia-* drivers Seen with both rc5 & 6 https://bugs.launchpad.net/ubuntu/+s...x/+bug/1080389
Fixed here with linux-* (3.7.0-4.12), should make it into daily image in a day or so
Ubuntu Forums Code of Conduct