linux.txt

Linux Notes
===========
Steven K. Baum
v0.1, 2014-07-14
:doctype: book
:toc:
:icons:

:numbered!:

[preface]

X11
---

http://fedoraproject.org/wiki/How_to_create_xorg.conf[+http://fedoraproject.org/wiki/How_to_create_xorg.conf+]

RPM Files
~~~~~~~~~

The X11 server distribution is packaged in RPM files of
the form:

+xorg-x11-server-*+

xorg.conf
~~~~~~~~~

Fedora releases since Fedora 10 do not create a +/etc/X11/xorg.conf+ file, used
to configure the X server, by default. The X configuration is automatically
determined each time X is started. In most cases, this works well and there is
no need to manually specify X configuration information. 
If you need to make manual changes to X configuration for any reason, you will
first need to create a /etc/X11/xorg.conf file. 

You can create a basic xorg.conf using the X executable itself. As root run: 

+Xorg :1 -configure+

which will create the file:

+/root/xorg.conf.new+

which can then be copied to the correct location via:

+cp /root/xorg.conf.new /etc/X11/xorg.conf+


xrandr
~~~~~~

This is used to set the size, orientation and/or  reflection  of  the
outputs for a screen. It can also set the screen size.
If  invoked  without any option, it will dump the state of the outputs,
showing the existing modes for each of them, with a '+' after the
preferred modes and a '*' after the current mode.
A sample output of invoking +xrandr+ without options is:

-----
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
DVI-0 disconnected (normal left inverted right x axis y axis)
DIN disconnected (normal left inverted right x axis y axis)
DVI-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y
axis) 700mm x 390mm
   1920x1080     60.00*+  60.00    50.00    59.94    24.00    23.98  
   1920x1080i    60.00    50.00    59.94  
   1280x720      60.00    50.00    59.94  
   1440x576i     50.00  
   1024x768      75.08    70.07    60.00  
   800x600       72.19    75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08
-----