Serial console configuration 100 Serial console device name ttySN TTY device name, regular serial port usbNbXpY TTY device name, USB based hvcN Xen console ^(ttyS[0-9]+|hvc[0-9]+|usb[0-9]+b.*)$ Console baud rate 1200 2400 4800 9600 19200 38400 57600 115200 1200 1200 bps 2400 2400 bps 4800 4800 bps 9600 9600 bps 19200 19200 bps 38400 38400 bps 57600 57600 bps 115200 115200 bps ^(1200|2400|4800|9600|19200|38400|57600|115200)$ Enable screen blank powersaving on VGA console