When I wake up my macbook from sleep, the screen has a slightly white filter. The filter slowly fades away (after 5s) and the screen becomes normal again. This started about two weeks back.
Is this a cause of concern? And any way to find out what's causing this?
Model: Macbook 12" (Early 2016) 512GB
Processor: 1.2 GHz Intel Core m5
Memory: 8 GB 1867 MHz LPDDR3
Graphics: Intel HD Graphics 515 1536 MB
OS: 10.11.4
MacBook, OS X El Capitan (10.11.4)