Chosen Solution
Ok so few weeks ago I got myself a brand new m1 macbook air, it was working totally fine until suddenly the keyboard backlight started to flicker out of nowhere. *things I noticed:*flickering starts sometime(randomly) after mac goes to sleep or SHUT DOWN.stops immediately when I touch the backlight slider control from the control center and does not happen until unless mac goes to sleep(manually/automatically) or Shutdown.All keys work ,backlight auto adjusts to ambient lighting as expected, manual backlight control using the slider works as expectedif the backlight was set to a level other than 0, and the backlight was flickering during sleep/shutdown it stops immediately after I log inif backlight was set to level 0, flickering continues after I log in, but stops immediately when the slider is touched and given a manual input (including level 0)*when its flickering and the slider is not yet touched, the slider doesnt oscillate back and forth in sync with the flickering to reflect the backlight level, it stays normal.*The flickering is completely random and may randomly stop completely during sleep.what I tried doing:*Complete Mac Os reinstall after formatting everything.norton full scanInstalling mac os on an ext ssd and booting from thereNothing worked.Btw just so u know, I recently moved to an area with very high humidity.Thanks already if anyone of u read all this crap, any opinion of what could be wrong would be EXTREMELY EXTREMELY EXTREMELYYY helpful. *UPDATE 1 : I noticed that now it no longer flickers but rather just mostly stays on (with flickering happening rarely), which is even terrible coz the backlight is draining the battery during sleep *1 additional info: The 2nd day after I received the mac, I used it after workout, and I remember a tiny drop of sweat fell on the bottom left corner of the space bar key. most of it was on the key surface with a tiny amount going under, which I wiped by poking a thin piece of paper. I didnt think much of it at first but here I am after 2 weeks, so who knows (smh)
You really have no choices here! Time to find your way to an Apple Store or authorized reseller to help you.
