Problem also exists in Kubuntu Daily 20150318 i386. Are you sure this is related to the X server? When I remove the maybe- ubiquity the problem does not disappear.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1432343 Title: Vivid Daily 20150315: Live cd does not boot in VirtualBox To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/syslinux/+bug/1432343/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs