If calibration must be repeated after every reboot:

Calibration is stored in the file ../elo/eloconfig. Upon reboot, the driver references this file for calibration data. If eloconfig is not found, the driver loads default calibration values.

If the eloconfig is not being created after calibration, the permissions on the ./elo folder may be incorrect. Set permissions so that everyone has Read, Write, and Execute privileges. This can be done using a file manager such as Nautilus, or in terminal mode using the chmod command (chmod 777 ./elo).

You should also assign the ./elo folder to any groups who calibrate.

NOTE: These instructions assume that the system has writable media.