The screen should have been cleared by syslinux on exit from gfxboot, which should have been almost immediately after you pressed Enter and quite a while before the system got round to displaying the splash screen. I don't know why this didn't happen in your case.
ubiquity cannot be involved here - none of its code runs until quite a bit later, and the changelog entry you found is referring to a different bit of user interface. ** Package changed: gfxboot (Ubuntu) => syslinux (Ubuntu) -- no feedback after choosing "Try Ubuntu" off Live USB https://bugs.launchpad.net/bugs/543033 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
