Comment 80 for bug 28326

I've got the trouble too. I thank before that it was linked to usplash (see bug https://launchpad.net/ubuntu/+source/usplash/+bug/81474) but I don't know anymore.

The bug occurs when GDM normaly appears. The cursor "rounds" and then stops and after the sceens goes to standy mode 1 time. It goes up after a return to standy mode just after.

The bug doesn't occur each boot, and I've done a diff log that may help (when gdm went up and when it didn't).