My monitor has an Analogical connection. First I install windows 7, then I install Ubuntu 11.10, when this installation finish I restarted the PC.
Any time there I turn on the PC I see the BIOS configuration (Windows appears with the same, this is normal), then appear Loading system
and 3 seconds later (with no boot-loader) I get this message on the monitor:
Signal out of range
92KHz - 58Hz
Because I don't see anything in the screen I wait around 10 seconds and then appears Ubuntu. To boot Windows I must press 5 or more times the down arrow key and Enter
This message appears in different location, as when I press Ctrl+Alt+F1 (opening a TTY) this message appears again, then I press Ctrl+Alt+F7 and appears my desktop with graphic problems.
So I think the problem is due to the graphics drivers.