Bug 755003

Summary:	No serial console getty when used with console=ttyS0 console=tty0
Product:	[Fedora] Fedora	Reporter:	Jan ONDREJ <ondrejj>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	16	CC:	johannbg, lpoetter, metherid, mschmidt, notting, philipp, plautrba, systemd-maint
Target Milestone:	---
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Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2012-01-02 14:00:03 UTC	Type:	---
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jan ONDREJ 2011-11-18 14:40:13 UTC

Description of problem:
When starting system with this order of consoles:
  console=ttyS0 console=tty0
I plan to use both VGA and serial consoles on my system. Problems running other combination of console settings is described in bug#652215 (which started with Fedora 14).
But if console=ttyS0 is not default console (last kernel parameter), systemd doesn't start getty service on this console. Please update autodetection or make at least some workaround to overwrite this setting.

Version-Release number of selected component (if applicable):
systemd-37-3.fc16.x86_64

How reproducible:
always

Steps to Reproduce:
1. boot kernel with: nomodeset console=ttyS0 console=tty0
  
Actual results:
no getty on serial console

Expected results:
login: prompt on serial console

Comment 1 Michal Schmidt 2011-11-18 16:38:06 UTC

A workaround is:
ln -s /lib/systemd/systemd/serial-getty@.service /etc/systemd/system/getty.target.wants/serial-getty

Comment 2 Jan ONDREJ 2011-11-18 19:13:10 UTC

(In reply to comment #1)
> A workaround is:
> ln -s /lib/systemd/systemd/serial-getty@.service
> /etc/systemd/system/getty.target.wants/serial-getty

Doesn't work. Even if "login:" prompt is displayed, I can't type my login/password. When typing "root" it presses enters and ends with "Login incorrect". :-(

Fedora release 16 (Verne)
Kernel 3.1.1-1.fc16.x86_64 on an x86_64 (ttyS0)

fedora-16 login: root
Heslo: 
Login incorrect

login: 
Heslo: 
Login incorrect

First time login is accepted, but password is entered after first char is pressed. Looks like agetty process works well, but when login is started, it is sharing /dev/ttyS0 with another process. lsof doesn't say anything interesant for me.

Comment 3 Michal Schmidt 2011-11-18 22:04:01 UTC

That's likely not a systemd bug, but plymouth doing funky stuff with the terminal settings. See https://bugzilla.redhat.com/show_bug.cgi?id=691374#c4 for a workaround.

Comment 4 Michal Schmidt 2012-01-02 14:00:03 UTC

(In reply to comment #0)
> But if console=ttyS0 is not default console (last kernel parameter), systemd
> doesn't start getty service on this console. Please update autodetection or
> make at least some workaround to overwrite this setting.

So this is expected behaviour. Only the last console= gets a serial getty spawned automatically by systemd.

That leaves us with the issue of broken serial console settings, which is a plymouth bug.

*** This bug has been marked as a duplicate of bug 691374 ***