This is an X11 (or lightdm, or whatever) issue, not a video driver issue. I have the exact same symptoms but I have a nVidia chipset on my laptop. I also did a complete wipe and re-install and had the identical problem when using the daily build iso for 2011-08-12. I went back to my daily build CD from 2011-07-19 and the install worked fine (i.e. not a hardware issue). Then I ran updates and after the reboot I no longer get my GUI -- same as above. When I run startx from the shell, it starts okay, but some icons are missing (whatever the bottom two on the left, above the Workspaces icon).
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/811355 Title: Oneiric won't start x on boot up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/811355/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

