Originally Posted by kovidgoyal
@pollito: Yeah the start wireless device menu entry needs to be grayed out when any device is connected, not just MTP.
Uhhh ... why? It you actually use it then it is probably started when calibre starts. Are you planning on shutting it off and restarting it? There is no problem with having the driver running when some non-wireless device is connected. The driver respects the "one device at a time" rule and won't accept wireless connections.
I do think that telling a wireless device that it cannot connect to calibre because calibre is busy servicing another device is a good idea. We will look into doing that.