This issue seems to be fixed with 3.0.0-13-generic-pae (Well, you probably don't need the pae but I had installed the 32-bit oneiric onto a USB-Stick on my 4GB notebook, which probably caused the -pae kernel to be installed onto the USB-Stick.) I was able to boot my Dell Mini 12 from that USB-Stick. The kernel package is version: 3.0.0-13.22 and both lightdm and compiz seam to be working well.
Thanks! PS: I'm not sure whether I should change the status to "Fix Released"... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/815000 Title: Oneiric X/LightDM doesn't start on an Intel GMA500 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/815000/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs