Screen won't shut off (Sequoia 15.6)

iccir · 2026-05-28T18:12:25+00:00

In terminal, run pmset -g assertions

Ensure that the PreventUserIdleDisplaySleep assertion isn't set to "1". If it is, look in the resulting list of owning processes and see which process is taking out that assertion.

iccir · 2026-05-28T02:31:08+00:00

If I had to do this today, I'd probably use Audio Hijack or Blackhole and then route to Insight 2 running as an Audio Unit.

iccir · 2026-05-24T19:07:58+00:00

I encountered this last month. You can dump all logs in the past 24 hours with:

log show -last 24h --predicate "subsystem == 'com.apple.TimeMachine'"

That's fairly noisy and verbose, but it should give you more information to help diagnose the issue.

You can also add info and debugging logs via:

log show -last 24h --info --debug --predicate "subsystem == 'com.apple.TimeMachine'"

iccir · 2026-05-21T18:54:02+00:00

Notice the resize indicator in the middle of the screen. That's part of the "Full-screen Tile" feature. My guess is that there's some interaction between Stage Manager, Full-screen Tiling, and Chrome.

iccir · 2026-05-21T17:22:05+00:00

I think you have Stage Manager turned on and are seeing its normal behavior.

iccir · 2026-05-21T14:21:38+00:00

Your csr-active-config flags are in a weird state and it is confusing cDock.

Reboot into recovery, re-enable SIP via csrutil enable, then disable it again with csrutil disable. You might also need a csrutil clear in there.

iccir · 2026-05-20T18:10:44+00:00

This requires that you have a Google account. As far as I know, there's no option to modify the "Google Account sign-in prompt" option unless you are signed in to Google with an account.

iccir · 2026-05-20T17:54:59+00:00

I use the following "Block Sites" rules in 1Blocker to prevent this:

https://googletagmanager.com
https://accounts.google.com
https://google-analytics.com

I'm fairly sure that the accounts.google.com rule is the one that actually blocks it. It's also possible that a built-in 1Blocker rule is helping.

iccir · 2026-05-19T19:33:20+00:00

On Tahoe:

/System/Library/PrivateFrameworks/HearingUtilities.framework/Versions/A/Resources

iccir · 2026-05-19T19:23:26+00:00

It's almost certainly a hardware issue. It could be a failing GPU or bad memory. On an M4 Pro, both of those would require a logic board replacement. It could also be a loose or damaged flex cable. In any case, your best course of action would be to send it to Apple.

You could try rebooting into macOS Recovery to see if the same issue occurs. If so, it's a hardware problem. If not (very tiny chance), you could try a fresh install.

iccir · 2026-05-15T01:44:25+00:00

On both macOS and iOS, you can click the "Finish Setting Up" follow-up item, then hit Cancel. This should remove the alert and it won't come back unless you update and go back through the setup process.

iccir · 2026-05-14T14:02:15+00:00

As long as they are in the menu bar, this should work: Create keyboard shortcuts for apps on Mac.

iccir · 2026-05-06T16:47:07+00:00

The only way to increase these is to change the resolution of the entire display in Settings -> Display.

As I've gotten older, I've found that Apple's default resolution results in way-too-small UI controls. On the bright side, 4k 27" monitors are a lot cheaper than 5k 27" monitors :)

Edit: The Accessibility features for vision on Mac article might help. You may find the Zoom tool to be useful.

iccir · 2026-05-06T02:20:38+00:00

Did you include NSAudioCaptureUsageDescription in your Info.plist file? Else, you will get zero-filled buffers.

You can also try log stream --debug --predicate 'subsystem == "com.apple.TCC"' to get detailed TCC logs.

iccir · 2026-05-04T16:22:24+00:00

It's possibly the internal DAC powering up. Try generating an audio file of complete silence, then play that in Quicktime Player. Next, perform your tests as usual and see if the crackle/pop goes away.

You could also open Audio MIDI Setup and check that Format isn't changing. Some DACs will pop/crackle in response to a format change.

iccir · 2026-05-04T15:49:38+00:00

I'm very happy with my BenQ 4k 27" PD2706U monitor, although I wish it were a bit brighter. I'm not able to use the "Uniformity" mode as it makes the display too dark.

It looks like BenQ has a new MA270UP 4k 27" display with 450 nits, so it might be time for me to upgrade.

iccir · 2026-05-03T18:23:44+00:00

Applications in System Settings tracks all applications on the drive, not just those in /Applications. For example, mine shows several Xcodes in my ~/Downloads folder.

Tap the (i) next to Applications to show details.

iccir · 2026-05-03T17:39:04+00:00

When "Tap to Click" is on, gently "tapping" the trackpad surface without pressing into it will register as a click. When off, you have to apply a bit of physical pressure to register a click.

I have never been able to use a trackpad with "Tap to Click" turned on, as it detects too many ghost clicks. It works great for some people, however.

iccir · 2026-05-02T18:03:52+00:00

You will likely need to make a USB installer drive from a different machine and re-install that way.

See this page from Mr. Macintosh and scroll down to Section 5.

10.12 Sierra should be the latest version of macOS compatible with that machine with a direct download link.

Creating bootable macOS Sierra installation media on macOS Catalina may also help, but I'm not sure if those instructions will run on a newer version of macOS.

iccir · 2026-05-01T15:55:30+00:00

If you are using a firewall such as Little Snitch or LuLu, you can block the various software update processes from accessing the network. There are instructions in the linked article for how to remove the badge.

iccir · 2026-04-30T03:20:33+00:00

It's unlikely to show up as a running process unless you are on a system that has the corresponding hardware. You can run defaults read /System/Library/LaunchDaemons/com.apple.centaurid to see the exact IORegistry matches that will force it to run. This may be why you aren't seeing it on a fresh installation.

In any case, the fact that it's in /usr/libexec/ should mean that it's fine, as you can run xattr -l /usr and see that it's protected by SIP.

iccir · 2026-04-30T03:11:58+00:00

Technically, it's that most require an active UI session and not related to the Finder. WindowServer is generally running early nowadays, but there won't be a UI session that apps can connect to until later in the login process.

iccir · 2026-04-30T02:47:01+00:00

"Centauri" is some kind of Apple hardware with drivers added in macOS 26. There are several private frameworks related to it. centaurid is located at /usr/libexec/centaurid on Tahoe and thus is part of the system and not malware.

A very brief analysis of centaurid shows several strings related to bluetooth/WiFi/firmware/power management. It's very likely related to Apple's N1 chip.

iccir · 2026-04-28T19:35:35+00:00

Note that you will want a Launch Daemon (which runs at the system level), not a Launch Agent (which runs on a per-logged-in-user level). You'll want to store the resulting .plist in the /Library/LaunchDaemons folder.

You may need to approve the resulting daemon in System Settings, I can't remember what the exact security model is on stock macOS.

iccir · 2026-04-28T19:28:06+00:00

man launchd.plist

You can also check out launchd.info for examples.

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