My system is OS X Yosemite. When I connect MBP to a monitor, the monitor shows no signal error and the MacBook screen also becomes black. Disconnecting will not make the MacBook screen normal again. I have to force it to shut down and restart. I also don't have the "detect display" option in system preference -> display. Does anyone have the same problem?
MacBook Pro 13-inch, Mid 2012. Processor: 2.5 GHz Intel Core i5. Memory 4GB 1600 MHz DDR3. Graphics Intel HD Graphics 4000 1024 MB. The cable is VGA-mini displayport (not Apple brand, but worked fine with projectors before). The monitor is AOC E2752VH (model #: 270LM00004)