Comment 56 for bug 1070150

I'm experiencing this bug on every other boot since a few months now. At first, I was using 12.10 but last week I updated to 13.04 and the issue remains;

 - the Ubuntu boot logo shows up
 - then the screen goes black
 - a movable mouse cursor becomes visible in the center of the screen
 - a blinking cursor appears in the top left corner
 - nothing happens until I switch to a console prompt via CTRL-ALT-F1…6

With the console, I can restart lightdm and everything works fine from there on.

Lenovo Thinkpad X230 with Ubuntu 13.04 x86_64 and Kernel 3.8.0-19
lightdm 1.6.0-0ubuntu2
xorg 1:7.7+1ubuntu4