This maybe because you are not handling. You need to check which USB event you are getting when the computer is going to sleep. Once you know the event, you need to stop the streaming/GPIF state machie (basically you need to call the appStotp function which we have created in FX3/CX3 examples. You may then put the device to suspend mode with a wakeup source. After the wakeup is triggred, you need to do a channel reset and start streaming again.
hello ni shant aditya: hello to explana the phenomena- i press the reset device button ,and the stream continues