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This is why a "universal" port was a bad idea. Just because a cable looks like it'll fit doesn't mean it will work. Charging ports have fundamentally different

This is why a "universal" port was a bad idea. Just because a cable looks like it'll fit doesn't mean it will work. Charging ports have fundamentally different requirements from data ports and display ports. I miss MagSafe. Also, if the overheating issues are true then macOS should issue a warning when charging from an unsuitable port.

cosmie 6y ago
> Also, if the overheating issues are true then macOS should issue a warning when charging from an unsuitable port. It doesn't seem to be an issue with the port being unsuitable - the SE post mentions[1] that the right side similarly increases in temperature significantly when in use. It just doesn't trigger the same throttling behavior. Looking at an iFixit teardown[2], the ssd chips are located next to the left thunderbolt controller. I wonder if that may be why temperature spikes on the left side trigger more aggressive temperature management than spikes on the right. [1] Quote: Note that high temperature on the right side appears to be ignored by the OS. Plugging everything into the two right ports instead of the left raised the Right temperatures to over 100 degrees, without the fans coming on. [2] https://www.ifixit.com/Teardown/MacBook+Pro+15-Inch+Touch+Bar+2019+Teardown/123653 https://www.ifixit.com/Teardown/MacBook+Pro+15-Inch+Touch+Ba...
kalleboo 6y ago
I had the same issue with a MagSafe 2012 MBPr (throttling when charging). It's just a lack of adequate heat dissipation in Apple's laptops, and with the USB-C ones you suddenly get around it by plugging in on the right side where there aren't enough temperature sensors for it to properly throttle.
gruturo 6y ago
The concept of a universal port was perfectly fine, it's just the implementation that is flawed. And before USB-C and Thunderbolt, "Just because a cable looks like it'll fit" DID mean it will work, at least for what an end-user would have been likely to face.

cosmie 6y ago

> Also, if the overheating issues are true then macOS should issue a warning when charging from an unsuitable port. It doesn't seem to be an issue with the port being unsuitable - the SE post mentions[1] that the right side similarly increases in temperature significantly when in use. It just doesn't trigger the same throttling behavior. Looking at an iFixit teardown[2], the ssd chips are located next to the left thunderbolt controller. I wonder if that may be why temperature spikes on the left side trigger more aggressive temperature management than spikes on the right. [1] Quote: Note that high temperature on the right side appears to be ignored by the OS. Plugging everything into the two right ports instead of the left raised the Right temperatures to over 100 degrees, without the fans coming on. [2] https://www.ifixit.com/Teardown/MacBook+Pro+15-Inch+Touch+Bar+2019+Teardown/123653 https://www.ifixit.com/Teardown/MacBook+Pro+15-Inch+Touch+Ba...

kalleboo 6y ago

I had the same issue with a MagSafe 2012 MBPr (throttling when charging). It's just a lack of adequate heat dissipation in Apple's laptops, and with the USB-C ones you suddenly get around it by plugging in on the right side where there aren't enough temperature sensors for it to properly throttle.

gruturo 6y ago

The concept of a universal port was perfectly fine, it's just the implementation that is flawed. And before USB-C and Thunderbolt, "Just because a cable looks like it'll fit" DID mean it will work, at least for what an end-user would have been likely to face.