I have TP-LINK WN725N Wi-Fi usb card.
I use the newest rasbian whezzy 3.18 2015-05-05. When I plug TP-Link while PI works with the desktop mode PI at once reboots itself and loads command line successfully.
Next I start desktop mode (startx) then display/monitor gets black and PI works and works endlessly without effect.
I have 5.2V / 2A power supply so it is more than recommended.
What is wrong? How can I get desktop mode with TP-LINK WN725N connected to the PI?