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Apple Computing Products:
macOS - Notebook Hardware
2021 MBP 16-inch Crashes While Asleep w/USB Charging
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<blockquote data-quote="MacInWin" data-source="post: 1898376" data-attributes="member: 396914"><p>Sorry you took it that way. I did not intend to imply the problem was generated by you. All I meant to say was that by doing what you are doing the problem is manifesting. If you were to leave it on mains, not on a timer, it might not crash.</p><p></p><p>There is an issue with some of the new M1 Macs that if you plug it into mains when the machine is not booted it will cycle the power on and off, over and over, but never actually charge the battery. The workaround to that is to boot the machine, then connect power, then you can shut it down again and the cycling doesn't start. That bug may be a part of your problem, but it doesn't generate a crash report because it's not crashing, just not connecting to mains. I don't know what Apple plans to do about it, if anything. I'm traveling, but plan to contact Apple when I get home next week to see what they have to say. The issue has been reported in several sites, but none mention crashes, and my Mac doesn't crash at all, so the two items may or may not be related.</p><p></p><p>One final thought.</p><p></p><p>You have now disclosed three items that you didn't mention before:</p><p></p><p>1. You are an electrical engineer.</p><p>2. You have searched the Internet for the failure message in the crash report. </p><p>3. You have contacted Apple.</p><p></p><p>Those three items make a HUGE difference in how I would have approached this issue from the beginning. I took the time to talk about the smart battery management because I thought from your posts you were unaware of the advancement in battery management from Apple. I would not have done that if you had mentioned those three things. </p><p></p><p>It's interesting in that if you look at System Preferences/Battery and Usage History, you can watch the smart technology holding the battery below 100% (after it learns your routine) and then suddenly pushing the battery to top off just before it "expects" you to start using it. You can turn that function off, if you prefer to self manage, in System Preferences/Battery/Battery by checking/de-checking the "Optimize battery charging" option. In fact, if you want to continue to self-manage that manually, I would recommend turning it off so that you aren't "competing" for battery management.</p><p></p><p>My next recommendation was going to be to call Apple, but you say you've done that, so I'll drop out of this thread. Best of luck with the problem.</p></blockquote><p></p>
[QUOTE="MacInWin, post: 1898376, member: 396914"] Sorry you took it that way. I did not intend to imply the problem was generated by you. All I meant to say was that by doing what you are doing the problem is manifesting. If you were to leave it on mains, not on a timer, it might not crash. There is an issue with some of the new M1 Macs that if you plug it into mains when the machine is not booted it will cycle the power on and off, over and over, but never actually charge the battery. The workaround to that is to boot the machine, then connect power, then you can shut it down again and the cycling doesn't start. That bug may be a part of your problem, but it doesn't generate a crash report because it's not crashing, just not connecting to mains. I don't know what Apple plans to do about it, if anything. I'm traveling, but plan to contact Apple when I get home next week to see what they have to say. The issue has been reported in several sites, but none mention crashes, and my Mac doesn't crash at all, so the two items may or may not be related. One final thought. You have now disclosed three items that you didn't mention before: 1. You are an electrical engineer. 2. You have searched the Internet for the failure message in the crash report. 3. You have contacted Apple. Those three items make a HUGE difference in how I would have approached this issue from the beginning. I took the time to talk about the smart battery management because I thought from your posts you were unaware of the advancement in battery management from Apple. I would not have done that if you had mentioned those three things. It's interesting in that if you look at System Preferences/Battery and Usage History, you can watch the smart technology holding the battery below 100% (after it learns your routine) and then suddenly pushing the battery to top off just before it "expects" you to start using it. You can turn that function off, if you prefer to self manage, in System Preferences/Battery/Battery by checking/de-checking the "Optimize battery charging" option. In fact, if you want to continue to self-manage that manually, I would recommend turning it off so that you aren't "competing" for battery management. My next recommendation was going to be to call Apple, but you say you've done that, so I'll drop out of this thread. Best of luck with the problem. [/QUOTE]
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Apple Computing Products:
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2021 MBP 16-inch Crashes While Asleep w/USB Charging
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