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 phase of screen rendering, not the OS.

My understanding is that by design, the full graphics library mode isn’t enabled intentionally. Whether people label it a glitch or feature (or good / bad design) might be wading into opinion territory. I don’t know the back story on this, but it’s plausible an engineer figured the risk (or manager figured the priority/cost) to embedding more code into firmware when weighed against a “let’s be pretty about everything” design goal. We can all agree on what shipped though by inspecting the screen during updates.

We are not seeing any problem with the update at work so haven’t reported this as a problem to Apple.

  • 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
  • We’re not seeing any problem this causes @charlie137 so I’ve edited my post. I hope my answer helps you decide what to do.
    – bmike
    Nov 18 '21 at 11:52
  • I was hoping this is not intentional since that would be way too depressing. But apparently things are that bad since nothing's really changed. With freebsd extremely laptop-friendly now and "kext fiasco" - thats a no brainer)
    – charlie137
    Nov 25 '21 at 1:30

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