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== Calibration ==
<pre>
rm -f /etc/udev/rules.d/ws-calibrate.rules
reboot
</pre>
reboot
</pre>
=== Non-Weston based Graphic System ===
If the weston compositor is not running, it is necessary to run:
<pre>
export TSLIB_CALIBFILE=/usr/share/pointercal
ts_calibrate
</pre>
==== Exporting TSLIB_CALIBFILE ====
The environment variable TSLIB_CALIBFILE is used by the tslib package to indicate the location of the pointercal file. The default value for TSLIB_CALIBFILE is /etc/pointercal. If you are writing a program that uses tslib you should make sure that you export TSLIB_CALIBFILE to point to the location of your pointercal file (as indicated in the previous section), or that you place a copy of the pointercal file at the default /etc/pointercal location.
Additional information can be found int the following [http://processors.wiki.ti.com/index.php/How_to_Recalibrate_the_Touchscreen#Where_is_the_ws-calibrate.rules_file.3F page in TI wiki]
