lockscreen issue/ wake lag/ unlock black screen/ incoming call black screen(solution)

i bought a htc m7 few days back . i did not not use it on kitkat i just updated it to lollipop then i started to notice as soon as i hit power button it would not unlock immediately only the back and home button would lit on and it takes a while to display to light on, sometime it just would not lit.and when someone called me there was nothing on the screen.. i became frustrated i searched but found nothing.. only few threads on xda.. but atlast i found the solution

Solution : Just put a colorful bright wallpaper in your lockscreen and homescreen avoid black wallpaper (optional : crank up your brightness or disable auto brightness) this simple solution put an end to my frustration.. press thanks if i helped :)

from xda-developers http://ift.tt/2bV8bM5
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