Sorry to dig up a dead corpse of a thread, but it never got answered and I have the same problem, only different
No, really it's the same, except not on rebot. My screen goes blue all of its own, when the phone - Lenovo K910 dual sim, running CM 12.1 - is sitting in the desk doing nothing. The first time it happened was when I got an SMS, now it's AFAICT completely random. The screen then goes black sometimes and the blue LED comes on; sometimes it just stays blue. When I force restart, the phone usually wakes up OK, though at the very beginning, yesterday, there were graphical glitches on the screen (coloured bars, different levels of brightness, graphical corruption like you get on your PC when the GPU or memory are dying/glitching.
Since yesterday it has happened about a dozen times. It's got to the point where I am unable to trust the phone (will it throw a fit just as my employer calls me with something important?) and buying a replacement is not something I planned to do for another year, so it'd put a dent in my savings. Can anyone shed any light on this, please? Preferably backed with experience, because in terms of wild guesses I'm Noah's least favourite neighbour (flooded to hell, I mean
Thanks in advance!