I cant seem to see my login screen after upgrade to 11.10. It just show the Ubuntu dots. How come?
It sounds like a missing background file. Edit
If this isn't working for you, either check that the file in question exists and has appropriate permissions, or change the image to another one. (Tip: You can get an exact image path by selecting it in Nautilus, the file manager and hitting copy. Then you can simply paste it into the file mentioned above.)