Dell d620,Intel 945GM graphics, using b43 proprietary wlan driver, all else standard.
After wake from suspend a black screen is displayed with a selection cursor (white arrow). 13.04 was working fine on resume, this error has only occurred after upgrade install to 13.10. Occasionally the screen will "wake-up" correctly, and less often it will wake after several minutes of the black screen with white cursor. More often though the only thing that works is hard reboot. Also alternate terminals seem to be unavailable using the alt-fx keys.
I'm suspecting an X11 issue, but can't find any errors in logs that seem relevant. I've worked with several other distros, but this is my first "production" experience with Ubuntu. Any clue or troubleshooting steps welcome.