Normally, the x.1 update fixes many of the bugs from the first release. But in Tahoe, a crop of fresh bugs have been included. Here are some of them, and how they have arisen.
clock
If you use Timers in the Clock app a lot, after a while the app may stop working and show a blank view. This is the result of a service hoarding old timers to its property list.
When the clocks went back, looking in the log for entries at 01:49:02 brought a very great surprise: in one Mac, nearly 4 million entries in a single second.
Early Macs normally had their clocks synced manually, until System 8.5 introduced support for NTP. That later switched to a proprietary service, timed, in macOS 10.13 High Sierra.
How to ensure your Mac’s clock and time is as accurate as possible, what can cause problems, and how it works using the timed daemon, as revealed in the log.
A growing list of those bugs which are fixed in macOS 11.3, and those which remain.
Big Sur has recently introduced a bug which can change the format of log datestamps, which can break Ulbow, Mints and T2M2. Here’s how to fix it.
It’s surprising that macOS can be slower to fully register the annual ‘spring forward’ change than you are walking round manually changing your clocks.
The more you look at changes to Mach Absolute Time coming in Apple Silicon Macs, the more messy they become, largely because the docs are so incomplete.
Since we switched to Intel Macs, Mach precision time has ticked away in nanoseconds. That’s won’t be true in Apple Silicon Macs, and could have strange results.
The Eclectic Light Company 