> I am using TI beagle-board. When I use gf-calib for calibration of my touch 
> screen, the following message displays:
> # gf-calib
> Number of layers: 3
> Resolution: 720x400, refresh = 60Hz
> layer_idx=0
> gf_cursor_set(): error = 7
> 
> I have no idea how to solve it. Any help?

Try the -D option. Also, you need to have "img.conf" under /etc/system/config, plus the img_codec so's in your library 
path.

- Malte

Afetr including img.conf and img_codec so's i am getting error as 

Number of layers: 3
Resolution: 720x400, refresh = 60Hz
layer_idx=0
img_load(target1): errno = 3
load_image2surf(): failed

Please help.