Re: Enabling xdm in sysinst breaks console login?

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

On Sat, Jun 08, 2019 at 19:36:52 -0500, John D. Baker wrote:

> On Sat, 8 Jun 2019, David Brownlee wrote:
> 
> > That looks to be it - now I recall I set console off and constty on to
> > DTRT with or without wscons.
> 
> I've been wondering what the "constty" device was all about.

The thread is here:

http://mail-index.netbsd.org/tech-kern/2003/10/03/0008.html

TL;DR

| Subject: On /dev/console, /dev/constty and the TIOCCONS ioctl
| To: None <tech-kern%netbsd.org@localhost>
| From: David Laight <david%l8s.co.uk@localhost>
| List: tech-kern
| Date: 10/03/2003 21:05:06 
|
| I've committed changes today that add a /dev/constty device, and changed
| /etc/ttys so that getty (and hence any console login session) use it
| instead of /etc/console. init also uses it for single user mode.
[...]
| The only difference between /dev/console and /dev/constty is that output
| to the latter is not intercepted by the TIOCCONS ioctl.
| 
| I made the change because I want to capture kernel messages generated
| while sysinst is running in order to stop them 'messing up' the screen.
| 
| It also makes it possible to log in on the 'console' while xconsole
| (or similar) is running - a problem someone else mentioned yesterday.
[...]

-uwe