I have the same bug whith NVIDIA [GeForce GTS 450] on ubuntu 12.04 Here is my lightdm.log : http://paste.ubuntu.com/1111624/
I use Nvidia Twinview with two samsung screens, the artifacts appear on the top left of my left screen. I've got a black screen after the first log and it works nice after this.
I have the same bug whith NVIDIA [GeForce GTS 450] on ubuntu 12.04 paste.ubuntu. com/1111624/
Here is my lightdm.log : http://
I use Nvidia Twinview with two samsung screens, the artifacts appear on the top left of my left screen.
I've got a black screen after the first log and it works nice after this.