After enabling FileVault with recent T2 firmware patch the loading bar looks weird like its missing pre-cached image:

enter image description here

I replaced default Mojave.heic with a test image and gray "transparent" area kept test image framed while the rest of the screen remains black after system switched to user scale. Setting Display -> Scaled back to Default returning smooth booting. Is this a design issue or missing cache?

macOS 10.14.5 (18F203)

  • Is the Brightness slider set all the way up in Displays settings? – IconDaemon May 25 '19 at 13:25
  • @IconDaemon Almost on the max. – charlie137 May 25 '19 at 14:45
  • Bump it down to half then restart to see if this shadow grey goes away. – IconDaemon May 25 '19 at 14:52
  • @IconDaemon 10%, 20%, 40% Brightness - no changes. – charlie137 May 26 '19 at 2:37

The firmware controls that rendering process and it’s by design not using the full graphics library so it’s hard to say if it’s a glitch or hardware issue or if an engineer figured the risk (or manager figured the priority/cost) to embedding more code outweighed the “let’s be pretty about everything” design goal.

Time will tell if Apple patches that or if others can reproduce it on their equivalent hardware and then you’ll know if it’s hardware defect, by design and if that design got someone to tweak the code / drivers to remediate that visual artifact.

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  • So it is the same behavior on 10.14.6 – charlie137 Jul 29 '19 at 1:18
  • Same on Catalina – charlie137 Oct 8 '19 at 20:44

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