Hi,
the X server on RHEL 6 can go without xorg.conf while creating needed parameters for itself 'on the fly' when starts.
But you can still control you X server via custom 'xorg.conf'

e.g. my laptop:

[root@orionis ~]# ls -al /etc/X11/xorg.conf.d/xorg.conf
-rw-r--r--. 1 root root 1748 Jul 30 08:43 /etc/X11/xorg.conf.d/xorg.conf

e.g. my xorg.conf :


# Xorg configuration

Section "ServerLayout"
    Identifier     "Default Layout"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
    Option         "XkbModel" "pc105"
    Option         "XkbLayout" "us"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       28.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Viewport    0 0
        Depth       24
    EndSubSection
EndSection




also, you can use 'xinput --list' to list input devices



On 09/17/2014 01:40 PM, MAH Maccallum wrote:
Hmm! I don't appear to have an xorg.conf file anywhere (not even in backups 
from before the problems). I do have xorg.conf.d directories but they seem to 
be empty both in the current system and in the backups

Yum group list showed I did not have the Desktop Platform or KDE groups. I 
tried group install but each failed, the Desktop one with clashes on libxml and 
the KDE with a package with wrong signature. I cannot cut and paste the errors 
from this iPad so I will forward them separately

Thanks for help, Malcolm

Sent from my iPad

On 16 Sep 2014, at 21:58, "Karel Lang AFD" <[email protected]> wrote:

Hi,
to solve this, id suggest:
1. have a look what is stated in your xorg.conf file - you should have there 
something like


Section "InputDevice"
   # generated from data in "/etc/sysconfig/keyboard"
   Identifier     "Keyboard0"
   Driver         "keyboard"
   Option         "XkbLayout" "us"
   Option         "XkbModel" "pc105"
EndSection


2. log in as root at runlevel 3 and 'startx'
then switch back to console via ctrl+alt+f1 and have a look at 
/var/log/Xorg.0.log

and look for any error message
switch back to gui via ctrl-alt-f7 to try to type

3. check if you have all X server related packages installed - if you run below command 
you should get those groups installed (except kde if you dont use it) ... as a matter of 
a fact, you can try to install it and see if you can run keyboard in kde ... ( to install 
grp run 'yum groupinstall "name of grp"

yum grouplist

Desktop
Desktop Platform
General Purpose Desktop
KDE Desktop
X Window System


cheers,


On 09/16/2014 04:34 PM, MAH Maccallum wrote:
I recently had a glitch (my own fault) and had to restore/rebuild. I also 
upgraded from SL 6.1 to 6,5. After several days struggle I can now boot  up
and login using run level 3 but gnome does not seem to accept any keyboard
input, either in the password dialog box if I start at run level 5 or in any 
window or dialog box started after a startx from the run level 3 console.
I have found reports of similar problems on the web but none of the solutions 
suggested (or the exact symptoms) seem to match my problem. Our system
guru is on vacation and I have a deadline to meet so I desperately want help to 
get my
GUI back! My best guess is that some file leftover from the old installation is 
interacting badly with the new: but what? All help gratefully received!


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