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>2. Why This HOWTO Is Obsolete</H1
><P
>For 4.0.0 and later versions of XFree86, you no longer have to
generate modelines at all under most circumstances. Instead they are
computed internally by the server at startup time, based on the
resolution you specify in the Modes part of the Screen section part of
your XFree86 configuration file and the monitor capabilities your X
server gets via an EDID query to the monitor. </P
><P
>To change your screen resolution and color depth, simply edit or
create a Display section describing it. Here is a sample Screen
description from the X configuration file of my laptop:</P
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> Section "Screen"
Identifier "Screen0"
Device "ATI Rage Mobility"
Monitor "Monitor0"
DefaultDepth 16
Subsection "Display"
Depth 16
Modes "1024x768"
EndSubsection
EndSection
</PRE
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>All you will usually need to do is change the numbers in the
Mode entry. X will do the rest. If you specify an impossible
resolution, it will fall back to the closest approximation that the EDID
data from the monitor says it can support.</P
><P
>Therefore, the information in the remainder of this HOWTO is
useful only if (a) you have an old, pre-EDID monitor, or (b) your
graphics-card driver doesn't support querying the monitor, or (c) you
are running an old version of XFree86 (in which case, you should
fix your problem by upgrading), or (d) your monitor/card combination
can support a resolution above 1920 x 1440 or below 640 x 480, which
is the range over which XFree86 has canned modelines.</P
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