Recently I've had a problem with updating the system: The Discovery app crashed every time I tried to update. After a couple of hours I've tried again and the app didn't crash, the update did complete. However, after rebooting and logging I get a flickering black screen (I can see the wallpaper and my icons for a moment). I took a video with my phone: https://www.youtube.com/watch?v=lUmT2wU8Sck
Originally asked by imp on Stack Exchange (superuser) (CC BY-SA 4.0).
