[karmic] Touch Screen Calibration

Wolfgang yellowbird at gmx.at
Sat Nov 14 12:08:01 UTC 2009


I experienced the same problems on an Gigabyte T1028X Netbook: 
calibration works but is lost after next reboot.
What I found out about it:

The calibration software writes a file /etc/evtouch/config with the 
calibration data. When looking in the logfile /var/log/Xorg.0.log it 
seems that the driver does not use this configuration data, because 
there were other values for MinX, MaxX etc. mentioned as there are in 
the config file.

There is a startup-script /etc/init.d/xserver-xorg-input-evtouch.
This script does not really load a daemon but sets only the 
configuration data for the evtouch driver from the config file when 
called with parameter "start" or no parameter. Other values (restart, 
reload, stop) have no effect.
During startup the script is called from the symlink 
/etc/rc2.d/S25xserver-xorg-input-evtouch. It seems that at this time the 
evtouch-driver is not running, and so the value setting does not work.

I renamed the link to /etc/rc2.d/S99xserver-xorg-input-evtouch so that 
it will be started at a later time during boot, and then the calibration 
data was recognized.

I'm not sure if this is the right solution or if it works under all 
circumstances, but you can give it a try.

Wolfgang





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