Debian : Touchscreen calibration

Andy Green andy at openmoko.com
Thu Aug 7 10:20:48 CEST 2008


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Somebody in the thread at some point said:
| Following the instructions at :
| http://wiki.openmoko.org/wiki/Debian#Get_touchscreen_working , I was
| able to get touchscreen to work as a mouse. But, the cursor is way off
| from where I am touching. I am guessing the calibration mentioned there
| is not accurate anymore? Has anyone managed to get it working on
Freerunner?

The instructions there are not right.  He gives canned numbers when
these vary by individual Freerunner.

You need to install tslib and its utilities (no idea what package, but
it probably is packaged), and run

ts_calibrate

when it exits after you touch the crosshairs in sequence, the magic
numbers it spits to console are the numbers you need to use for your
actual touchscreen.

- -Andy
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