I have an application running on ubuntu 14.04(on an intel nuc) which responds to udev events. I have found using udeavadm monitor that there are lengthy lags in the events being sent. For instance if I repeatedly remove and reinsert the USB eventually the events will stop. After a wait (+- 30s) the events appear. I have tested using USB 2.0 and the problem cannot be replicated. I have goggled quiet extensively, yet I cannot find any information (specifically on the lag). Any insight greatly appreciated.