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>X.org/XFree86 Video Timings HOWTO</TITLE
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><DIV
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><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
><A
NAME="AEN2"
></A
>X.org/XFree86 Video Timings HOWTO</H1
><H3
CLASS="author"
><A
NAME="AEN4"
>Eric Steven Raymond</A
></H3
><DIV
CLASS="affiliation"
><SPAN
CLASS="orgname"
><A
HREF="http://www.catb.org/~esr/"
TARGET="_top"
>&#13; Thyrsus Enterprises</A
><BR></SPAN
><DIV
CLASS="address"
><P
CLASS="address"
><br>
&nbsp;&nbsp;&nbsp;&nbsp;<TT
CLASS="email"
>&#60;<A
HREF="mailto:esr@thyrsus.com"
>esr@thyrsus.com</A
>&#62;</TT
><br>
&nbsp;&nbsp;&nbsp;&nbsp;</P
></DIV
></DIV
><P
CLASS="copyright"
><A
HREF="ln16.html"
>Copyright</A
> &copy; 2000 Eric S. Raymond</P
><DIV
CLASS="revhistory"
><TABLE
WIDTH="100%"
BORDER="0"
><TR
><TH
ALIGN="LEFT"
VALIGN="TOP"
COLSPAN="3"
><B
>Revision History</B
></TH
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.6</TD
><TD
ALIGN="LEFT"
>2013-09-22</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>Ten years after: minor updates for X.org. kvideogen and xf86setup are
dead, read-edid has a new home page.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.5</TD
><TD
ALIGN="LEFT"
>2003-09-28</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>License changed to Creative Commons.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.4</TD
><TD
ALIGN="LEFT"
>2004-10-14</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>URL fixes.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.3</TD
><TD
ALIGN="LEFT"
>2003-02-22</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>URL fixes.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.2</TD
><TD
ALIGN="LEFT"
>2002-02-03</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>Minor corrections about mode line autogeneration.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.1</TD
><TD
ALIGN="LEFT"
>2001-10-29</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>Note that VESA modes top out at 1920x1440.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 6.0</TD
><TD
ALIGN="LEFT"
>2001-08-09</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>Clearer explanation of DDC and EDID. This HOWTO is now
basically obsolete.</TD
></TR
><TR
><TD
ALIGN="LEFT"
>Revision 5.0</TD
><TD
ALIGN="LEFT"
>2000-08-22</TD
><TD
ALIGN="LEFT"
>Revised by: esr</TD
></TR
><TR
><TD
ALIGN="LEFT"
COLSPAN="3"
>First DocBook version.</TD
></TR
></TABLE
></DIV
><DIV
><DIV
CLASS="abstract"
><A
NAME="AEN61"
></A
><P
></P
><P
><EM
>This HOWTO is effectively obsolete, and
has been so since 2003. Current versions of X compute optimal
modelines from EDID information returned by your monitor. In addition,
many of the constraints and caveats in this document applied to CRTs
but no longer apply to digital flatscreens.</EM
></P
><P
>How to compose a mode line for your card/monitor combination
under X.org (originally
written for its ancestor
XFree86).
X distributions now include good facilities for configuring most
standard combinations; this document is mainly useful if you are
tuning a custom mode line for an ultra-high-performance monitor or
very unusual hardware. It may also help you in using
<SPAN
CLASS="application"
>xvidtune</SPAN
> to tweak a standard mode that is
not quite right for your monitor.</P
><P
></P
></DIV
></DIV
><HR></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>1. <A
HREF="disclaimer.html"
>Disclaimer</A
></DT
><DT
>2. <A
HREF="obsolete.html"
>Why This HOWTO Is Obsolete</A
></DT
><DT
>3. <A
HREF="introduction.html"
>Introduction</A
></DT
><DT
>4. <A
HREF="tools.html"
>Tools for Automatic Computation</A
></DT
><DT
>5. <A
HREF="video.html"
>How Video Displays Work</A
></DT
><DT
>6. <A
HREF="basic.html"
>Basic Things to Know about your Display and Adapter</A
></DT
><DD
><DL
><DT
>6.1. <A
HREF="basic.html#AEN140"
>The monitor sync frequencies</A
></DT
><DT
>6.2. <A
HREF="basic.html#AEN151"
>The monitor's video bandwidth</A
></DT
><DT
>6.3. <A
HREF="basic.html#AEN160"
>The card's dot clock</A
></DT
><DT
>6.4. <A
HREF="basic.html#AEN176"
>What these basic statistics control</A
></DT
></DL
></DD
><DT
>7. <A
HREF="specs.html"
>Interpreting the Basic Specifications</A
></DT
><DD
><DL
><DT
>7.1. <A
HREF="specs.html#AEN216"
>About Bandwidth</A
></DT
><DT
>7.2. <A
HREF="specs.html#AEN223"
>Sync Frequencies and the Refresh Rate:</A
></DT
></DL
></DD
><DT
>8. <A
HREF="tradeoffs.html"
>Tradeoffs in Configuring your System</A
></DT
><DT
>9. <A
HREF="sizes.html"
>Memory Requirements</A
></DT
><DT
>10. <A
HREF="framesizes.html"
>Computing Frame Sizes</A
></DT
><DT
>11. <A
HREF="magic.html"
>Black Magic and Sync Pulses</A
></DT
><DD
><DL
><DT
>11.1. <A
HREF="magic.html#AEN280"
>Horizontal Sync:</A
></DT
><DT
>11.2. <A
HREF="magic.html#AEN313"
>Vertical Sync:</A
></DT
></DL
></DD
><DT
>12. <A
HREF="synth.html"
>Putting it All Together</A
></DT
><DT
>13. <A
HREF="overd.html"
>Overdriving Your Monitor</A
></DT
><DT
>14. <A
HREF="inter.html"
>Using Interlaced Modes</A
></DT
><DT
>15. <A
HREF="answe.html"
>Questions and Answers</A
></DT
><DT
>16. <A
HREF="fixes.html"
>Fixing Problems with the Image.</A
></DT
><DD
><DL
><DT
>16.1. <A
HREF="fixes.html#AEN443"
>The image is displaced to the left or right</A
></DT
><DT
>16.2. <A
HREF="fixes.html#AEN447"
>The image is displaced up or down</A
></DT
><DT
>16.3. <A
HREF="fixes.html#AEN451"
>The image is too large both horizontally and vertically</A
></DT
><DT
>16.4. <A
HREF="fixes.html#AEN454"
>The image is too wide (too narrow) horizontally</A
></DT
><DT
>16.5. <A
HREF="fixes.html#AEN457"
>The image is too deep (too shallow) vertically</A
></DT
></DL
></DD
><DT
>17. <A
HREF="cplot.html"
>Plotting Monitor Capabilities</A
></DT
><DT
>18. <A
HREF="credits.html"
>Credits</A
></DT
></DL
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