diff options
Diffstat (limited to 'Documentation/admin-guide/serial-console.rst')
| -rw-r--r-- | Documentation/admin-guide/serial-console.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/admin-guide/serial-console.rst b/Documentation/admin-guide/serial-console.rst index 8c8b94e54e26..1609e7479249 100644 --- a/Documentation/admin-guide/serial-console.rst +++ b/Documentation/admin-guide/serial-console.rst @@ -59,7 +59,7 @@ times. In this case, there are the following two rules: the hardware is not available. The result might be surprising. For example, the following two command -lines have the same result: +lines have the same result:: console=ttyS1,9600 console=tty0 console=tty1 console=tty0 console=ttyS1,9600 console=tty1 @@ -78,7 +78,9 @@ If no console device is specified, the first device found capable of acting as a system console will be used. At this time, the system first looks for a VGA card and then for a serial port. So if you don't have a VGA card in your system the first serial port will automatically -become the console. +become the console, unless the kernel is configured with the +CONFIG_NULL_TTY_DEFAULT_CONSOLE option, then it will default to using the +ttynull device. You will need to create a new device to use ``/dev/console``. The official ``/dev/console`` is now character device 5,1. |