📄 143-145.html

📁 linux-unix130.linux.and.unix.ebooks130 linux and unix ebookslinuxLearning Linux - Collection of 12 E
💻 HTML
字号:
<HTML>

<HEAD>

<TITLE>Linux Configuration and Installation:Installing and Configuring XFree86</TITLE>

<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
<SCRIPT>
<!--
function displayWindow(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width +
',height=' + height + ',resizable=1,scrollbars=yes');
}
//-->
</SCRIPT>
</HEAD>

 -->




<!--ISBN=1558285660//-->

<!--TITLE=Linux Configuration and Installation//-->

<!--AUTHOR=Patrick Volkerding//-->

<!--AUTHOR=Kevin Reichard//-->

<!--AUTHOR=Eric Foster//-->

<!--PUBLISHER=IDG Books Worldwide, Inc.//-->

<!--IMPRINT=M & T Books//-->

<!--CHAPTER=3//-->

<!--PAGES=143-145//-->

<!--UNASSIGNED1//-->

<!--UNASSIGNED2//-->



<CENTER>

<TABLE BORDER>

<TR>

<TD><A HREF="139-143.html">Previous</A></TD>

<TD><A HREF="../ewtoc.html">Table of Contents</A></TD>

<TD><A HREF="145-148.html">Next</A></TD>

</TR>

</TABLE>

</CENTER>

<P><BR></P>

<P><FONT SIZE="+1"><B>Probing for Dot Clocks</B></FONT></P>

<P>The XFree86 X server has a special <B>probeonly</B> mode that outputs values from the <B>XF86Config</B> file and values it detects. You need to run X in this mode to see if things are going to work and to see if it detects any problems.</P>

<P>Run the command line:</P>

<!-- CODE SNIP //-->

<PRE>

  X -probeonly

</PRE>

<!-- END CODE SNIP //-->

<P>when your system has no extra load on it. Stop any unneeded programs before running this, as any extra system load may influence the timings X obtains.

</P>

<P>The following command runs X in <B>probeonly</B> mode and sends the output to the file named <B>/tmp/x.values</B>:</P>

<!-- CODE SNIP //-->

<PRE>

  X -probeonly &gt; /tmp/x.values 2&gt;&#38;1

</PRE>

<!-- END CODE SNIP //-->

<P>Be sure to run <B>X</B> from the console. Don&#146;t try to run <B>X</B> if you&#146;re already running <B>X</B>.</P>

<P>If you have some dot clocks in the <B>XF86Config</B> file, then <B>X -probeonly</B> won&#146;t try to detect new ones. Because of this, the first time you run X this way, you should comment out the clocks in your <B>XF86Config</B> file. After you run X in <B>probeonly</B> mode, you can add the clocks to the <B>XF86Config</B> file and try it again, seeing if things still seem to work.</P>

<P>You can then look at the file <B>/tmp/x.values</B>, which should contain something like the following:</P>

<!-- CODE //-->

<PRE>

  XFree86 Version 3.1.1 / X Window System

  (protocol Version 11, revision 0, vendor release 6000)

  Operating System: Linux

  Configured drivers:

     S3: accelerated server for S3 graphics adapters (Patchlevel 0)

         mmio_928, s3_generic

  (using VT number 7)



  XF86Config: /usr/X11R6/lib/X11/XF86Config

  (**) stands for supplied, (-) stands for probed/default values

  (**) Mouse: type: Microsoft, device: /dev/ttyS0, baudrate: 1200

  (**) S3: Graphics device ID: "Actix GE32&#43; 2MB"

  (**) S3: Monitor ID: "NEC MultiSync XE17"

  (**) FontPath set to

  "/usr/X11R6/lib/X11/fonts/misc/,/usr/X11R6/lib/X11/fonts/Type1/,/usr/X1

  1R6/lib/X11/fonts/Speedo/,/usr/X11R6/lib/X11/fonts/75dpi/,/usr/X11R6/li

  b/X11/fonts/100dpi/"

  (-) S3: card type: ISA

  (-) S3: chipset:   928, rev E or above

  (-) S3: chipset driver: mmio_928

  (**) S3: videoram:  1024k

  (**) S3: Ramdac type: att20c490

  (-) S3: Ramdac speed: 110

  (-) S3: clocks:  25.24  28.32  39.99   0.00  50.13  77.02  37.35  44.89

  (-) S3: clocks:  90.11 119.98  80.30  31.50 110.16  65.08  75.17  94.68

  (-) S3: Maximum allowed dot-clock: 110.000 MHz

  (**) S3: Mode "1024x768": mode clock =  81.000, clock used =  80.300

  (**) S3: Mode "800x600": mode clock =  50.000, clock used =  50.130

  (**) S3: Mode "640x480": mode clock =  31.000, clock used =  31.500

  (-) S3: Using 6 bits per RGB value

  (**) S3: Virtual resolution set to 1024x768

</PRE>

<!-- END CODE //-->

<P>Note that many of these values come from our <B>XF86Config</B> file.</P>

<P>Now, add the clocks to the Device section of your <B>XF86Config</B> file. Note that each time we ran <B>X -probeonly</B>, it returned slightly different clock values. For example, in this run, we got the following clock values (formatted for the <B>XF86Config</B> file):</P>

<!-- CODE SNIP //-->

<PRE>

  Clocks  25.24  28.32  39.99   0.00  50.13  77.02  37.35  44.89

  Clocks  90.11 119.98  80.30  31.50 110.16  65.08  75.17  94.68

</PRE>

<!-- END CODE SNIP //-->

<P>From the <B>AccelCards</B> file, we found these clocks&#151;close, but not exact:</P>

<!-- CODE SNIP //-->

<PRE>

  Clocks 25 28 40 72 50 77 36 45

  Clocks 90 120 80 32 110 65 75 95

</PRE>

<!-- END CODE SNIP //-->

<H4 ALIGN="LEFT"><A NAME="Heading20"></A><FONT COLOR="#000077">Testing Your Configuration</FONT></H4>

<P>Now you&#146;re ready to start X and see if things work. Type in the following command and see if things start up:

</P>

<!-- CODE SNIP //-->

<PRE>

     startx

</PRE>

<!-- END CODE SNIP //-->

<P>The <B>startx</B> shell script is the official way to start X from a user account.</P>

<H3><A NAME="Heading21"></A><FONT COLOR="#000077">Starting X</FONT></H3>

<P>The <B>startx</B> script runs the <B>xinit</B> program, which does two things: runs the X server (the program named <B>X</B>) and then runs the commands in the <B>.xinitrc</B> file in your home directory. These commands should set up the X applications you want launched on startup. If there&#146;s no <B>.xinitrc</B> file in your home directory, then <B>xinit</B> runs a default script. The system default <B>.xinitrc</B> file is <B>/usr/lib/X11/xinit/xinitrc.fvwm</B> (no dot).</P>

<P>The best way to start out with X is&#151;once you verify your <B>XF86Config</B> file&#151;to copy the system <B>.xinitrc</B> into your home directory and then edit this file. Most of the <B>.xinitrc</B> file comes from the standard XFree86 installation for Linux; it looks for certain files, few of which will actually exist, and it executes programs using those files it finds. The section at the end is where you&#146;ll set up the X applications you want started when X starts.</P><P><BR></P>

<CENTER>

<TABLE BORDER>

<TR>

<TD><A HREF="139-143.html">Previous</A></TD>

<TD><A HREF="../ewtoc.html">Table of Contents</A></TD>

<TD><A HREF="145-148.html">Next</A></TD>

</TR>

</TABLE>

</CENTER>





</td>
</tr>
</table>

<!-- begin footer information -->





</body></html>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -