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Since Fedora 9, the init process is managed by upstart. To get a serial console with a login prompt the old method doesn’t work anymore. The old method is to add the following line into /etc/inittab:

s0:3:respawn:/sbin/agetty -L 115200 ttyS0 vt100

This spawns a agetty for the ttyS0 in runlevel 3. The new method is event based where all event description files are inside /etc/event.d/. For a normal Fedora installation the file “serial” will be called from a udev event. If udev is not running and doesn’t generate events the following method will work. The spawned agetty should be for a ttyS0 so we name the file ttyS0. The content for the same behaviour as above looks like:

# ttyS0 - agetty
start on stopped rc3

respawn
exec /sbin/agetty -L 115200 ttyS0 vt100

UPDATE: fedora 17 including grub2

edit /etc/sysconfig/grub:
 GRUB_TERMINAL="serial console"
 GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1"
 GRUB_CMDLINE_LINUX="... console=ttyS0,115200"
generate grub-config
 grub2-mkconfig -o /etc/grub2.cfg

This entry was posted on Thursday, November 6th, 2008 at 14:06 and is filed under Linux, Uncategorized.You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.