Hacker News Reader

Comment by hanche | Hacker News Reader

Even a supposedly sleeping Mac will wake up from time to time, doing exactly what I don’t know. But I consistently see it in the logs.

View on HN

It will sync email and other things so that everything is already downloaded when you wake it up. See https://support.apple.com/en-gb/HT204032

> Mobile Device Management can remotely lock and wipe your Mac.

I appreciate the transparency here. Outside of API documentation, a lot of plain-language information doesn't go in-depth enough about MDM capabilities.

Ah, thanks. That jogged my memory. I did turn off power nap a long time ago, but my laptop still kept waking up at night anyhow. But I just checked, and now it seems to work as advertised.

Wouldn't it be fantastic, if Apple had an easy way to help users learn, why their mac woke up? Currently that is complex scientific work.

And it won’t do CRON because reasons

Bugs me too. Your best bet is launchd which solves the problem, but it is a bit of pain to write job definition property lists. More here: https://www.launchd.info

This is a useful library for plists, in case you're interested - https://docs.python.org/3/library/plistlib.html

> it is a bit of pain to write job definition property lists

http://launched.zerowidth.com/ makes it easier.

Ironically -- I think this bug is fixed in a like 10.15.3 or so. Eitherway a cron I set up over a year ago before I realized this bug has started mailing me since I updated to Catalina.

Yes, I know this, but when a Mac does this, it does it only to run routine Apple code, stuff that should not, under any circumstances, cause a kernel panic. And up until Catalina, that it never has, barring binary corruption or defective hardware.

In this case, the kernel panic seems to be related to the Intel Iris video driver.

Reply on news.ycombinator.com