Does anybody experienced this problem on Thinkpad E560? Whenever I use it, whether in battery or via AC adapter, the screen flashes randomly. It flashes like when our eyes are blinking. When I use my computer, it occurs 2-4 times. It doesn't affect what I'm doing but the thing is this is very annoying.
I tried the following solution: changed the refresh rate to 60 Hz and disabled refresh rate switching in the intel graphic driver. It solve the flashing when switching from battery to AC adapter (when plugging in or disconnecting the charger) but the flashing that I experienced when using my computer.
Anybody who knows solution to this problem? I'm using Windows 7 pre-installed OS with integrated graphics driver.
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