Hello Anna,
Thank you for your comment,
Note that we do not have any announcements yet regarding ActivInspire in Ubuntu 14.04 (so it is officially not supported), however our latest ActivDriver 5.10 works with 14.04. The calibration should therefore work if you have the latest installed.
If you would like to contact Promethean Technical Support directly by filling in the contact form on the below link: http://goo.gl/j3AT8S
We will be happy to provide the files for the ActivDriver.
When you fill in your form, please quote the reference number that I have created for yourself which is 00441286.
Thank you
Haymo