I removed the python script i wanted to autostart from rc.local ...and added it to .bashrc ...it still doesnt start the script but when i open the terminal ..the script starts on its own ..Its a python scirpt that has a gui based on Tkinter .

I changed the power supply , i am basically using a mobile charger to power the raspi B+ , and now the eGalax H/w is detected through lsusb , it does not disconnect as earlier , however the touchscreen only detects the first touch event , after that nothing happens ,another interesting thing that happens is the mouse cursor goes to left top corner on first touch , i even installed xinput_calibrator and dependencies , even while calibrating it detects only first touch , i tried using the mouse to detect the touch points , then it detects 3 touch calib points but calibration not sucessfull .