With F18 you have to add the "serial" option if you want the settings to carry over to the installed system. We wanted to allow for using serial console for install without forcing serial boot after install. 

Please try with serial and reopen if that doesn't work.

Hello Jesse,

"serial" boot option is obsolete and has been removed.
From anaconda boot options wiki:

serial

This option was never intended for public use; it was supposed to be used to force anaconda to use /dev/ttyS0 as its console when testing it on a live machine.

Use console=ttyS0 or similar instead. See console for details.

http://wwoods.fedorapeople.org/doc/boot-options.html#_serial

Reopening the bug.

(In reply to comment #2)
> Hello Jesse,
> 
> "serial" boot option is obsolete and has been removed.
> From anaconda boot options wiki:
> 
> serial
> 
> This option was never intended for public use; it was supposed to be used to
> force anaconda to use /dev/ttyS0 as its console when testing it on a live
> machine.
> 
> Use console=ttyS0 or similar instead. See console for details.
> 
> http://wwoods.fedorapeople.org/doc/boot-options.html#_serial
> 
> Reopening the bug.

That document is a work in progress, and does not reflect the very latest changes we've made in the code.  Serial was revived, after discussion with Will Woods.

If we just key off of "console=" we don't give users a way to use serial just for install, but not post-install.  This is what the serial flag is used for now.

Closing again.  Documentation will be updated.  In fact, the Fedora wiki has been updated to reflect this information:  https://fedoraproject.org/wiki/Anaconda_Boot_Options?rd=Anaconda/Options#console

Reopening. I'm so mad, I just lost lots of time because of broken documentation!

There is a big fat warning that [1] is obsolete. The current "draft" [2] says 'serial' is obsolete.

Please fix the documentation and *then* close the bug.

[1] https://fedoraproject.org/wiki/Anaconda_Boot_Options
[2] http://wwoods.fedorapeople.org/doc/boot-options.html#_serial

Removing Beta blocker, adding CommonBugs.

It's not just the documentation, the installer prints a message on the serial console that 'serial' isn't needed, but indeed the getty on the serial console is not autoconfigured without it.

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With Fedora 20 console=ttyS0 carries over to the installed system.