For completeness, this is the X.org log (from a clean boot of a lucid beta-2 live system). It shows that it tries to settle for a 1024x768 resolution for both screens, but for some reason the external one stays blank. It might be because xrandr decides to only show the internal one by default, or the non-native resolution somehow conflicts with KMS/the plymouth transition patch, etc.
For completeness, this is the X.org log (from a clean boot of a lucid beta-2 live system). It shows that it tries to settle for a 1024x768 resolution for both screens, but for some reason the external one stays blank. It might be because xrandr decides to only show the internal one by default, or the non-native resolution somehow conflicts with KMS/the plymouth transition patch, etc.