Disable console switching with ALT-Fn in Runlevel 3?

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att
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Disable console switching with ALT-Fn in Runlevel 3?

Post#1 by att » 31 Oct 2013, 13:11

Hello,

Is there a way to disable the console switching with ALT+F1, ALT+F2..... ALT+F6 in porteus, when I have booted to runlevel 3?
Any boot parameters that I need, or something like that?

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fanthom
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Re: Disable console switching with ALT-Fn in Runlevel 3?

Post#2 by fanthom » 31 Oct 2013, 15:11

please edit /etc/inittab and hash out all terminals except for the first one:

Code: Select all

c1::respawn:/sbin/agetty 38400 tty1 linux
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att
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Re: Disable console switching with ALT-Fn in Runlevel 3?

Post#3 by att » 05 Nov 2013, 16:47

I did edit the /etc/inittab and copied the new version into my rootcopy directory.
However, Linux DOES NOT ignore the ALT-Fn keys. I can press ALT+F2, for example, and the text screen will change. Sure, I cannot login anymore. But the keypress "ALT+F2" is still recognized and not ignored.
I want that Porteus ignores it completely.
So what to do?

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fanthom
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Re: Disable console switching with ALT-Fn in Runlevel 3?

Post#4 by fanthom » 05 Nov 2013, 21:03

please double check you inittab as everything is ok here. here is my inittab which leaves only tty1 and tty2 active (ctrl+alt+F3-F6 wont work):

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#
# inittab       This file describes how the INIT process should set up
#               the system in a certain run-level.
#
# Version:      @(#)inittab             2.04    17/05/93        MvS
#                                       2.10    02/10/95        PV
#                                       3.00    02/06/1999      PV
#                                       4.00    04/10/2002      PV
#                                      13.37    2011-03-25      PJV
#
# Author:       Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org>
# Modified by:  Patrick J. Volkerding, <volkerdi@slackware.com>
#

# These are the default runlevels in Slackware:
#   0 = halt
#   1 = single user mode
#   2 = unused (but configured the same as runlevel 3)
#   3 = multiuser mode (default Slackware runlevel)
#   4 = X11 with KDM/GDM/XDM (session managers)
#   5 = unused (but configured the same as runlevel 3)
#   6 = reboot

# Default runlevel. (Do not set to 0 or 6)
id:3:initdefault:

# System initialization (runs when system boots).
si:S:sysinit:/etc/rc.d/rc.S

# Script to run when going single user (runlevel 1).
su:1S:wait:/etc/rc.d/rc.K

# Script to run when going multi user.
rc:2345:wait:/etc/rc.d/rc.M

# What to do at the "Three Finger Salute".                                                                                                                                                                         
ca::ctrlaltdel:/sbin/shutdown -t5 -r now                                                                                                                                                                           
                                                                                                                                                                                                                   
# Runlevel 0 halts the system.                                                                                                                                                                                     
l0:0:wait:/etc/rc.d/rc.0                                                                                                                                                                                           
                                                                                                                                                                                                                   
# Runlevel 6 reboots the system.                                                                                                                                                                                   
l6:6:wait:/etc/rc.d/rc.6                                                                                                                                                                                           
                                                                                                                                                                                                                   
# What to do when power fails.                                                                                                                                                                                     
pf::powerfail:/sbin/genpowerfail start                                                                                                                                                                             
                                                                                                                                                                                                                   
# If power is back, cancel the running shutdown.                                                                                                                                                                   
pg::powerokwait:/sbin/genpowerfail stop

# These are the standard console login getties in multiuser mode:
c1:12345:respawn:/sbin/agetty --noclear 38400 tty1 linux
c2:12345:respawn:/sbin/agetty 38400 tty2 linux
#c3:12345:respawn:/sbin/agetty 38400 tty3 linux
#c4:12345:respawn:/sbin/agetty 38400 tty4 linux
#c5:12345:respawn:/sbin/agetty 38400 tty5 linux
#c6:12345:respawn:/sbin/agetty 38400 tty6 linux

# Local serial lines:
#s1:12345:respawn:/sbin/agetty -L ttyS0 9600 vt100
#s2:12345:respawn:/sbin/agetty -L ttyS1 9600 vt100

# Dialup lines:
#d1:12345:respawn:/sbin/agetty -mt60 38400,19200,9600,2400,1200 ttyS0 vt100
#d2:12345:respawn:/sbin/agetty -mt60 38400,19200,9600,2400,1200 ttyS1 vt100

# Runlevel 4 also starts /etc/rc.d/rc.4 to run a display manager for X.
# Display managers are preferred in this order:  gdm, kdm, xdm
x1:4:respawn:/etc/rc.d/rc.4

# End of /etc/inittab
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att
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Re: Disable console switching with ALT-Fn in Runlevel 3?

Post#5 by att » 06 Nov 2013, 06:25

fanthom: You are obviously in Runlevel 5 (graphical mode, KDE or whatever) since you mention CTRL+ALT+Fn.
I am in TEXTMODE, runlevel *3*, no GUI, and I can "only" use ALT+Fn, which I don't want.
Yes, I changed the inittab, but still, Porteus will not ignore when the user presses ALT+F2, for example.

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Re: Disable console switching with ALT-Fn in Runlevel 3?

Post#6 by fanthom » 06 Nov 2013, 19:33

You are obviously in Runlevel 5
nope - i tested it in runlevel 3.

btw: in Slackware runlevel 4 is for GUI and 5 is not used:

Code: Select all

#   5 = unused (but configured the same as runlevel 3)
btw2: in text mode you can also use ctrl+alt+Fn to switch to another console.
Yes, I changed the inittab, but still, Porteus will not ignore when the user presses ALT+F2, for example.
on my system nothing happens when i press ctrl+alt+F3 (or alt+F3) with inittab posted above. what happens on your system? what do you see on the screen?
Please add [Solved] to your thread title if the solution was found.

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