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>Chapter 9. Tablet PCs / Pen PCs</TD
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><H1
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><A
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></A
>9.2. Display</H1
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="mobile-guide-p4c1s1-touchscreen"
></A
>9.2.1. Touchscreen</H2
><P
>&#13; The
<A
HREF="http://www.tldp.org/HOWTO/XFree86-Touch-Screen-HOWTO.html"
TARGET="_top"
>XFree86-Touch-Screen-HOWTO</A
>
describes how to setup X11 for touchscreens. There is also a short
<A
HREF="http://tuxmobil.org/touch_laptops.html"
TARGET="_top"
>survey of Linux laptops, which feature a touchscreen and/or have a pen as an input device</A
> and a
<A
HREF="http://tuxmobil.org/tablet_unix.html"
TARGET="_top"
>survey about Linux on Tablet PCs</A
>.
</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="mobile-guide-p4c1s1-screen-rotation"
></A
>9.2.2. Screen Rotation</H2
><DIV
CLASS="sect3"
><H3
CLASS="sect3"
><A
NAME="AEN1552"
></A
>9.2.2.1. X-Windows</H3
><P
>&#13; Some XFree86 drivers support a rotation of the display content. Use this
entry in the configuration file (DEGREE can become
CW - 90 degree clockwise ,
CCW - 90 degree counterclockwise ,
UD - 180 degree upside down,
but which options actually work depends on the drivers:
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
>&#13;Option "Rotate" "DEGREE"
</PRE
></FONT
></TD
></TR
></TABLE
>
</P
><P
>&#13; From version 4.3 on
<A
HREF="http://xfree86.org/"
TARGET="_top"
>XFree86</A
> contains the RandR extension (X resize and
Rotate Extension), which makes it possible to change the display resolution
on the fly without restarting X11. The tool <B
CLASS="command"
>xrandr</B
>
supports only resolution settings but no rotation. But the Tiny-X server
by RandR developer Keith Packard (Xkdrive) implements all of the RandR
features. But this is usually not included in the major distributions.
Currently <A
HREF="http://x.org/"
TARGET="_top"
>X.Org</A
> doesn't seem to support
rotate and resize.
</P
></DIV
><DIV
CLASS="sect3"
><H3
CLASS="sect3"
><A
NAME="AEN1560"
></A
>9.2.2.2. Utilities</H3
><P
>&#13; There are some rotation utilities for Linux PDAs available, but I haven't tested them
for Tablet PCs yet. Search the
<A
HREF="http://killefiz.de/zaurus/"
TARGET="_top"
>Zaurus Software Index - ZSI</A
>.
</P
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