
System console blanks out but system still up
I have seen something similar to what you describe if the
windowing system is exited whilst there is still a background
process running in a windowed console window.
In this case, it recovers if you kill that process and then
/etc/telinit q
to make init respawn a ttymon (getty mode) for the console.
Finding the offending process is not easy, because 'ps' no
longer annotates it as belonging to the console when things
get into this state.
--
Andrew Gabriel
Consultant Software Engineer