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Ctrl+Alt+f1 through Ctrl+Alt+f6 will pull up terminals and Ctrl+Alt+f7 pulls up the xserver.

But Ctrl+Alt+f8 pulls a blank screen with a blinking cursor.

I can't type anything. Does this serve a purpose?

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Only virtual terminals 1 through 7 are used by default on Ubuntu. Virtual terminals beyond 7 are left unused. But if you use multiple logins using the "Switch Account" feature, then these will go from 8 onwards.

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    Is there a limit to virtual terminals? What will occur if there are more inactive user sessions than TTYs?
    – nanofarad
    Feb 8, 2013 at 23:38

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