This should blank the console after 5 minutes, but is only working until the next reboot.
If this is wanted permanently add "consoleblank=5" to the kernel command line, i.e., open "/etc/default/grub" and add "consoleblank=300" (time in seconds) to the GRUB_CMDLINE_LINUX property, e.g.:
Code:
GRUB_CMDLINE_LINUX="consoleblank=300"
Then run "update-grub" to apply the new config for the next boot.