Some Googlebooks OLED screens can’t display true black, but a fix is coming

TL;DR Some Googlebooks owners are reporting that their OLED displays show dark gray instead of true black once Googlebook OS loads. The issue appears across multiple Acer and Lenovo models, and the presence of proper blacks during boot/setup points to a software-related problem. Google says its engineering team has identified the root cause and is working to get a fix out very soon.