When image data which does not satisfy set conditions is input from a device which outputs the image data, a display apparatus performs normal display. The display apparatus includes a display unit which displays an image based on the image data input from the PC, a connection control unit which executes connection control of setting transmission conditions including transmission line capacity of the image data to be output from the PC by transmitting and receiving control information to and from the PC, and an input data determination unit which determines whether or not the image data to be input from the PC satisfies the transmission conditions, after the connection control. When the image data to be input from the PC does not satisfy the transmission conditions, the connection control unit requests re-execution of the connection control with respect to the PC.