ch22.htm

linux-unix130.linux.and.unix.ebooks130 linux and unix ebookslinuxLearning Linux - Collection of 12 E

< information for the section >

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</FONT></PRE>

<H4 ALIGN="CENTER"><A NAME="Heading8<FONT COLOR="#000077">The Pathnames</FONT></H4>

<P>There is no reason to fiddle with the standard paths as provided in the sample

<TT>XF86Config</TT> file. In fact, any Linux distribution that provides strange paths

will also have edited this section of the <TT>XF86Config.eg</TT> or the template

<TT>XF86Config</TT> file for <TT>ConfigXF86</TT>. You do have to know where these

paths are pointing to in case of difficulties.</P>

<P>Your <TT>XF86Config</TT> file should look similar to my <TT>XF86Config</TT> file,

as shown in Listing 22.1.

<H3 ALIGN="CENTER"><A NAME="Heading9<FONT COLOR="#000077">Listing 22.1. Font

paths.</FONT></H3>

<PRE><FONT COLOR="#0066FF">

#

# Multiple FontPath entries are allowed (which are concatenated together),

# as well as specifying multiple comma-separated entries in one FontPath

# command (or a combination of both methods)

#

FontPath      &quot;/usr/X11R6/lib/X11/fonts/misc/&quot;

FontPath      &quot;/usr/X11R6/lib/X11/fonts/Type1/&quot;

FontPath      &quot;/usr/X11R6/lib/X11/fonts/Speedo/&quot;

FontPath      &quot;/usr/X11R6/lib/X11/fonts/75dpi/&quot;

# FontPath    &quot;/usr/X11R6/lib/X11/fonts/100dpi/&quot;

</FONT></PRE>

<P>To see whether these lines are correct, look into each of the directories mentioned

in List- ing 22.1 to see whether they have files in them. If these directories are

empty, you do not have the fonts installed, or they might be at another location.

<H4 ALIGN="CENTER"><A NAME="Heading10<FONT COLOR="#000077">The Keyboard Section</FONT></H4>

<P>You should specify the <TT>ServerNumlock</TT> option in this section if it is

not already defined. This is an easy way to specify your keyboard for XFree86. Otherwise,

only those keyboard modifications needed for international keyboard support must

be set manually. In a typical <TT>XConfig</TT> file, this section looks like the

one shown in Listing 22.2.

<H3 ALIGN="CENTER"><A NAME="Heading11<FONT COLOR="#000077">Listing 22.2. Keyboard

selection.</FONT></H3>

<PRE><FONT COLOR="#0066FF">

#

# Keyboard and various keyboard-related parameters

#

Section &quot;Keyboard&quot;

  AutoRepeat 500 5

  ServerNumLock

#  Xleds      1 2 3

#  DontZap

#

# To set the LeftAlt to Meta, RightAlt key to ModeShift,

# RightCtl key to Compose, and ScrollLock key to ModeLock:

#

#  LeftAlt     Meta

#  RightCtl    Compose

#  ScrollLock  ModeLock

# EndSection

</FONT></PRE>

<H4 ALIGN="CENTER"><A NAME="Heading12<FONT COLOR="#000077">The Pointer Section</FONT></H4>

<P>The pointer section keyword is the name for the protocol the mouse uses. The available

protocol names are listed in the <TT>XF86Config</TT> man page.</P>

<P>The Logitech serial mouse uses several keywords. The MouseMan uses the <TT>MouseMan</TT>

keyword. The more recent Logitech serial mouse uses the <TT>Microsoft</TT> keyword.

The older Logitech serial mouse uses the <TT>Logitech</TT> keyword.</P>

<P>Any mouse connected to the PS/2 port uses the <TT>PS/2</TT> keyword even if it

is in fact a serial mouse.



<DL>

	<DT></DT>

</DL>





<DL>

	<DD>

<HR>

<A NAME="Heading13<FONT COLOR="#000077"><B>TIP:</B> </FONT>If you are not sure

	which kind of bus mouse you have, look at the kernel's startup messages. It identifies

	the bus mouse type. 

<HR>



</DL>





<DL>

	<DT></DT>

</DL>





<DL>

	<DD>

<HR>

<A NAME="Heading14<FONT COLOR="#000077"><B>CAUTION:</B> </FONT>Ensure that

	the kernel bus mouse driver is using the same IRQ as the bus mouse. If not, you must

	change the IRQ and rebuild the kernel. The IRQ for bus mouse devices is given in

</DL>





<DL>

	<DD><FONT COLOR="#0066FF">/usr/src/linux/include/linux/busmouse.h</FONT>

</DL>



<PRE></PRE>





<BLOCKQUOTE>

	<P>The macro <TT>MOUSE_IRQ</TT> contains this IRQ and is set to <TT>5</TT> by default.

	

<HR>





</BLOCKQUOTE>



<P>Following is a list of device names for the mouse selection:



<UL>

	<LI><TT>/dev/inportbm</TT>--Use this for the Microsoft bus mouse. Note that this

	uses the Bus Mouse protocol, not the Microsoft protocol.

	<P>

	<LI><TT>/dev/logibm</TT>--Use this for the Logitech bus mouse. Note that this uses

	the Bus Mouse protocol, not the Logitech protocol.

	<P>

	<LI><TT>/dev/psaux</TT>--Select this for a PS/2 or quick port mouse. This uses the

	PS/2 protocol.

	<P>

	<LI><TT>/dev/atibm</TT>--Use this for the ATI XL bus mouse. Note that the ATI GU

	bus mouse is a Logitech or Microsoft bus mouse, depending on the version you have.

	<P>

	<LI>Other supported mice are serial mice; therefore, the device names are the same

	as the serial devices (<TT>/dev/ttyS</TT>? or <TT>/dev/ttyS</TT>?? for Linux).

</UL>





<DL>

	<DT></DT>

</DL>





<DL>

	<DD>

<HR>

<A NAME="Heading15<FONT COLOR="#000077"><B>TIP:</B> </FONT>If you have a two-button

	mouse, you might want to emulate the third button by setting <TT>Emulate3Buttons</TT>

	in the mouse section. Emulation is accomplished by a press of both buttons simultaneously.

	Many other settings are available, but they usually are not needed. Look at the <TT>XF86Config</TT>

	man page for a list of available settings. 

<HR>



</DL>



<P>You have to select one type of mouse and its baud rate if it's serial. Note in

Listing 22.3 that I have &quot;uncommented&quot; the Microsoft mouse selection for

my mouse and the 1200-baud-rate line. You will have to uncomment the line that matches

your mouse selection. The 1200-baud rate seems to work fine with older mice, and

using the 9600 rate did not result in a speed difference for newer mice. (Actually,

the 9600 rate did not work with my mouse at all.) Your results might vary.

<H3 ALIGN="CENTER"><A NAME="Heading16<FONT COLOR="#000077">Listing 22.3. Mouse

selection.</FONT></H3>

<PRE><FONT COLOR="#0066FF">

#

Section &quot;Pointer&quot;

# Mouse definition and related parameters

#

#MouseSystems &quot;/dev/mouse&quot;

Microsoft     &quot;/dev/mouse&quot;

#MMSeries     &quot;/dev/mouse&quot;

#Logitech     &quot;/dev/mouse&quot;

#MouseMan     &quot;/dev/mouse&quot;

#Busmouse     &quot;/dev/mouse&quot;

  BaudRate    1200

#  BaudRate   9600

#  SampleRate 150

#  Emulate3Buttons

... &lt;deleted some stuff here &gt; ..

EndSection

</FONT></PRE>

<H4 ALIGN="CENTER"><A NAME="Heading17<FONT COLOR="#000077">The Server Section</FONT></H4>

<P>If you want to identify the chip set your graphics card uses, run SuperProbe,

a program that comes with XFree86 and is capable of identifying a wide range of graphics

hardware. Note that SuperProbe can probe far more hardware than XFree86 supports.</P>

<P>Listing 22.4 shows a plain setting for a 640x480 monitor for X with a virtual

space of 800x600. A virtual space is an area where the display portion of your monitor

is mapped onto. Your monitor is a window into this space.

<H3 ALIGN="CENTER"><A NAME="Heading18<FONT COLOR="#000077">Listing 22.4. Server

selection.</FONT></H3>

<PRE><FONT COLOR="#0066FF">

#

# First the 8-bit color SVGA driver

#

vga256



#

# To disable SpeedUp, use NoSpeedUp

#

#  NoSpeedUp

#  Virtual    1152 900



  # Virtual   800 600

  Virtual     640 480

  ViewPort      0 0

  # Modes             &quot;640x480&quot; &quot;800x600&quot; &quot;1024x768&quot;

  # Modes             &quot;640x480&quot; &quot;800x600&quot;

  Modes               &quot;640x480&quot;



#

# Next the 1-bit mono SVGA driver

#

vga2



  Virtual     800 600

  ViewPort      0 0

  Modes               &quot;640x480&quot;

  # Modes        &quot;800x600&quot; &quot;640x480&quot;

</FONT></PRE>

<H4 ALIGN="CENTER"><A NAME="Heading19<FONT COLOR="#000077">Setting Up Video

Modes</FONT></H4>

<P>This is the hardest part. If your monitor is not in the database, choose the generic

modes (VGA and 640x480) and start making your own modes from there. The <TT>VideoModes.doc</TT>

file in <TT>/usr/lib/X11/docs</TT> is a very detailed document on how monitors work.

It should help you determine which parameters you need for this section.



<DL>

	<DT></DT>

</DL>





<DL>

	<DD>

<HR>

<A NAME="Heading20<FONT COLOR="#000077"><B>NOTE:</B> </FONT>I know that this

	entire chapter is full of warnings, but don't be alarmed. Just be careful and read

	the instructions for each step before taking it. 

<HR>



</DL>



<P>The <TT>xvidtune</TT> program is a neat utility to tune video modes. The modes

listed after running this utility might not work in all cases. You still have to

check the mode data against your monitor's data sheet and specifications before actually

testing the mode. The first line of the tuning mode's screen gives you information

on the specifications of the mode. You have to continuously check that these values

are within your monitor's capabilities before testing that mode.</P>

<P>See Listing 22.5 for the common video modes for XFree86.

<H3 ALIGN="CENTER"><A NAME="Heading21<FONT COLOR="#000077">Listing 22.5. Common

video modes.</FONT></H3>

<PRE><FONT COLOR="#0066FF">

Section &quot;Device&quot;

    Identifier &quot;Generic VGA&quot;

    VendorName &quot;Unknown&quot;

    BoardName &quot;Unknown&quot;

    ChipSet &quot;generic&quot;

#   VideoRam 256

#   Clocks 25.2 28.3

EndSection



# **********************************************************************

# Screen sections

# **********************************************************************



# The colour SVGA server



Section &quot;Screen&quot;

    Driver     &quot;svga&quot;

    Device     &quot;Generic SVGA&quot;

    Monitor    &quot;Generic Monitor&quot;

    Subsection     &quot;Display&quot;

        Depth      8

        Modes     &quot;640x480&quot;

        ViewPort   0 0

        Virtual    800 600

    EndSubsection

EndSection



# The 16-colour VGA server



Section &quot;Screen&quot;

    Driver     &quot;vga16&quot;

    Device     &quot;Generic VGA&quot;

    Monitor    &quot;Generic Monitor&quot;

    Subsection &quot;Display&quot;

        Modes      &quot;640x480&quot;

        ViewPort    0 0

        Virtual     800 600