After upgrading to 12.4, my 2021 16-inch MacBook Pro w/M1 Pro CPU now doesn't charge from any USB-C ports. My usual USB-C charger stopped working and the MBP doesn't make a beep or indicate any reaction to the charger. I've tried another charger and cable that I know work. It will charge from the 140w supplied charger but not from USB-C?
MacBook Pro 16″, macOS 12.4
I have the same issue too. I have MBP 16 Pro Max. Which chip do you guys have? Pro or Max?
For my instance, normally it'll happen after I folded down the screen (without powering down), and re-open the screen. Both sides of USB-C ports will stop functioning. From what I read, there is no manual SMC or PRAM reset on these M1 machines. So I shutdown, power off the laptop completely. Close the screen and wait for at least 1 minute. Re-open the screen and ports are back to normal. But it happens daily so it's very annoying.
That was the same experience I had. MagSafe worked fine yet USB-C didn't. I tried multiple chargers and cables with no joy. Then the problem went away and to my knowledge, I didn't do anything to fix it beyond multiple restarts.
Using early 12.x the USB-C charging worked fine but stopped working with 12.2 or 12.3. I don't remember which. Then I haven't seen the problem resurface.
Also, my "new" MBP went tango uniform and Apple had to basically replace all the electronics inside after 9 months of use. Before Monterey, I was experiencing a panic every morning when I first opened the lid. What I had found was that charging with the USB-C and closing the lid "sleep" caused a panic after a few minutes of charging. I have no idea if my later motherboard failure was tied to earlier panics using USB-C charging but it was interesting to note.
Also can't charging with USB-C ThunderBolt connection, with the original adapter and cable.
Using Mac M1 Max, MacOs 12.4.
Restart can fix the issue randomly, but the issue comes back hours later.
Have you reported it to Apple? The more who report, the better the chance of an acknowledgment.
That was the first thing I tried. Now I'm on my 3rd set of USB-C PD charger and cable to now find that it is charging? I've got to grab my first 2 sets of chargers and cables to retry but at this point my 65w USB-C PD charger is outputting 49.2 watts to the MBP. Possibly I was too quick to say the sky is falling but I have been using the original USB-C charger since I got the MBP back in November and after swapping it for a new 100w USB-C cable and charger it didn't work either. Stuff happens I guess.
I think I found the solution! At least this method has worked for me and now my MBP is having normally like it did before the update. I found the solution from this website: https://www.gottabemobile.com/how-to-fix-bad-macos-monterey-battery-life/
Specifically, this method:
"Reset PRAM and NVRAM
You will need to set up speaker, screen resolution and some other settings after you do this, but there’s a chance it alleviates your issues. Here’s how to do this:
If you have the 2016 MacBook Pro or newer you need to hold these keys as soon as you turn your MacBook Pro on and hold them for 20 seconds."
Yep, this is actually so brutal. People are complaining about it on other forums as well. My 2021 16" M1 Max was working perfectly fine until it updated to 12.4 this morning. Now the USB port on the right side is completely non-functional. Also the USB ports on the left side don't function if my computer falls asleep and I wake it up. Now, every time my computer wakes up, I need to unplug the USB cable and plug it back in to get my external monitor to work.
Restarting the computer works sometimes, but after a few minutes/1 hour the usb ports start failing again. Really hope Apple addresses these posts and takes it seriously. I rely on all my usb ports for 2 external monitors and charging devices. Now I can't do that
Same here. Restart helps for a while then problem returns. Tried using the original charger and magsafe cable but still have the problem. Problem started after upgrade to 12.4.
Can't reset NVRAM or SMC like another person mentioned b/c M1 Macbook Pro.
"Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life. For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can
be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles."
https://batteryuniversity.com/article/**-808-how-to-prolong-lithium-based-batteries
If you do the research, you will find that only charging a Li-Ion battery to 80% and never letting it drop below 40% will double the life of most batteries.
Are you sure that your battery doesn't go above 80%? I don't have the docs from Apple in front of me but if I remember correctly, the laptop when left on and charging will charge to 80% until it thinks you are going to use it and then it charges the battery to 100%. That's from memory but I'm pretty sure correct. If you notice in the quote above, dropping the maximum cell voltage by 0.1 volts (1/10th of a volt) will double the number of cycles. There are numerous articles on extending the life of a lithium-ion battery by not fully charging it. If I get enough life out of my battery at 80% then why go to 100%?
I forget the name of the program but there is one that will stop charging when the battery hits a certain level. The only problem is that you can't let the computer go to sleep as once it is asleep it's not running and can't check the voltage. So you have to keep it from powering down.
It's one thing on my older laptops that I can change the battery easily but my 2021 16-inch MBP has to be torn apart as the battery is glued in and if I can avoid spending $250 for a battery and not have it gutted, it seems like a reasonable plan to me.
But the bottom line is that you can do whatever you want with your computer. After all it's your money. This is only my opinion.
Yes, I'm sure my battery doesn't go above 80%. When I first got it, it was at 100% for the first week. Then it showed a notice that it is rarely (as in never) used on battery and Optimized Battery Charging was being implemented. Now, my battery remains at 80% and that's as its designed to be and what is best for the health of the battery long term.
You are not correct that you can't let the device go to sleep. My device sleeps when not in use. Yet Optimized Battery Charging accounts for this and keeps the battery at the 80% charge level.
The page you reference about charging to 100% when you need it is for those people who use their laptop on battery and charge. Like an iPhone. When you use your iPhone out on the real world during the day, then plug it in to charge at night, it learns when you get up in the morning and take it off the charger. It will charge it to 100% as you would need a full charge to get through the day.
If you don't use your laptop on battery, there is no reason for the battery to charge to 100% and indeed mine does not charge to 100%.
It's a known problem or at least experienced by a lot of people. It seems to fix itself from my experience?
You might try turning the USB-C connector upside down to see if that helps or use a different charging cable.
What I found was that if I plugged in the charger and closed the lid and then opened the lid after 15-20 minutes it had panic'd. For me it seemed to be USB-C charging plus lid down or going to sleep. Recently Apple had to replace all of the electronic guts including the lid tilt switch and I'm not sure if that had anything to do with my problem. The repair was due to my MBP constantly rebooting and then failing to boot. At this point I don't know if any of the problems are/were related to USB-C charging. It has been charging off the USB-C port for a couple of weeks after the repair without an issue.
If optimized battery charging isn't working on your MBP, you need to have it serviced. Have you checked to ensure optimized battery charging is turned on?
And that's a choice you need to make. As I said, I'd be working with Apple on this, not complaining on a user to user only forum. But perhaps that's just me.
Thanks for the suggestion. I filed a report also.
Funny that the dropdown list for operating system versions doesn't have 12.4 yet! LOL
After the initial problem, my MBP seems to be working fine. I haven't experienced any of the other issues noted in this thread. FWIW I've turned off the battery learning option and never charge my MBP to over 80% to maximize battery life and reduce the cycle count. I use a timer to only allow the charger to work for a few minutes to top up the battery to 70-80%. I received my unit on release day and the battery still shows 100% capacity after 8 months of use.
Good luck figuring it out. I had the USB-C charging issue for one day and then it started working. I haven't experienced it again and have no idea how or if I fixed it.
I always charge with a 65-watt PD USB-C charger on a timer switch to avoid over charging the battery. I typically keep my battery between 70-80% max and my battery app is still showing 100% capacity after about 8 months of use on my 16-Inch 2021 MBP w/M1 Pro cpu.
The Monterey 12.4 Broke USB-C Charging
