This is an old revision of the document!
Serial Console speed/tty
Note -> For AstLinux 1.3.0 and later, all serial consoles are 115200 baud 8N1
.
Note -> For AstLinux 1.2.10 and earlier, all serial consoles are 19200 baud 8N1
, unless otherwise noted.
Described here is a method to change the serial console speed/tty, not only currently but also automatically after upgrades.
This applies to the board types of geni586-serial
and genx86_64-serial
.
Note: AstLinux 1.0.4 or later is required
After setting-up AstLinux and creating the persistent storage, the setconsole-speed-tty
command is used to make persistent changes to the serial console speed/tty settings.
Usage:
Usage: setconsole-speed-tty [ show|reset|help ] 9600|19200|38400|57600|115200 [ ttySn ]
To issue this command you must either SSH into the AstLinux box, or use the CLI tab in the web interface with the “CLI Proxy Server” enabled in the Network tab. Some example command arguments are:
Set console speed to 38400 baud, using default ttyS0
setconsole-speed-tty 38400
Set console speed to 115200 baud, using /dev/ttyS1
setconsole-speed-tty 115200 ttyS1
Display current settings
setconsole-speed-tty show
Reset /etc/inittab to default factory state with matching kernel console= values
setconsole-speed-tty reset
While this setconsole-speed-tty
command is mostly intended for the board type of “geni586-serial” so as to support additional hardware without requiring new board types, this command may also be useful for other board types. For example, suppose you have both Soekris net5501 (19200 baud default) and PC Engines alix (38400 baud default) hardware and want a common terminal to act as a console. The net5501 can have it's default console speed easily changed via it's BIOS to 38400 baud, and then issue setconsole-speed-tty 38400
on the net5501. Now both the net5501 and alix boxes will use serial consoles at 38400 baud.