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MacBook 16-inch Fan Noise (2019)

discussions.apple.com

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Re: MacBook 16-inch Fan Noise (2019)

#301

Post by floatingatoll »

antalk wrote: post #282
floatingatoll wrote: post #199

I laughed at OP misspelling “fan talk” in the throwaway account’s name. Then I flagged this, because it’s the third time this past week that someone has tried to rabble-rouse about fan noise with a link to poor data and/or extensive discussion threads with terrible quality data and no summary. A meta-analysis of this discussion would have been super interesting. A link to Apple’s equivalent of a Reddit post is not, e…

LOL, no. I’ve been a HN reader for years, and this MBP fan issue is driving me nuts for a while now, I wanted it to get some attention. Then I realized I don’t remember my HN password, that’s why the new account. My name is Antal. K is the initial of my last name. Glad we cleared that up. But the last part of your message is noted, thank you. Next time I will do so.

Apologies re: name assumption. There’s always a lot of throwaway accounts with blank profiles and they’re impossible to tell from genuine content with any certainty. I’ll not comment about account names in the future, it was a bad call.

Re: MacBook 16-inch Fan Noise (2019)

#302

Post by krooj »

SkyPuncher wrote: post #274
krooj wrote: post #256

Earlier quoted context omitted.

I think the lag is common to all JetBrains IDEs: IDEA, WS, PyCharm, etc. IIRC, it's the JVM not using any acceleration for rendering and there might be another bug whereby using the integrated display and an external 4k panel at the same time causes massive lag. Try closing the lid with your 4k monitor attached and see if things speed up. In any case, I feel you on the system-wide lag. I basically just avoid using Je…

I use RubyMine and Webstorm simultaneously on a daily basis with three 1440p monitors (one of which is an ultrawide) and my laptop screen on. I have absolutely zero lag.

It’s specific to DPI scaling on 4K monitors :(

Re: MacBook 16-inch Fan Noise (2019)

#303

Post by krooj »

throw_away wrote: post #297
krooj wrote: post #256

Earlier quoted context omitted.

I think the lag is common to all JetBrains IDEs: IDEA, WS, PyCharm, etc. IIRC, it's the JVM not using any acceleration for rendering and there might be another bug whereby using the integrated display and an external 4k panel at the same time causes massive lag. Try closing the lid with your 4k monitor attached and see if things speed up. In any case, I feel you on the system-wide lag. I basically just avoid using Je…

https://youtrack.jetbrains.com/issue/JBR-526

Yup. Amazing.

Re: MacBook 16-inch Fan Noise (2019)

#304

Post by correct_horse »

filleduchaos wrote: post #293
correct_horse wrote: post #259

Earlier quoted context omitted.

Are you aware that the most expensive macbook pro costs $5900? A reasonable high-spec config costs $3800.

The original comment said a quarter of the price of the cheapest configuration, so I don't quite see how the price of the most expensive one is relevant.

whoops.

Re: MacBook 16-inch Fan Noise (2019)

#305

Post by mvkel »

gnudad wrote: post #28

This appears to be a software bug in macOS or AMD's drivers. Plugging in an external monitor at certain resolutions (1440p@60Hz in my case) will cause the AMD GPU to draw 18-20W constantly, no matter what it's doing. This causes the total system draw to increase from ~10W to ~30W. All that heat has to go somewhere. If I change the resolution of my external monitor to 1080p the AMD GPU drops to ~4W and the fans are qu…

This would explain why when an external monitor is plugged in, my battery drains despite being on a charger. When it reaches 5% battery, the CPU load goes to 800%.

The fix? Unplug the external monitor.

Re: MacBook 16-inch Fan Noise (2019)

#306

Post by ernie24 »

There's a video by Max Tech which digs deeper into the topic (along with possible fixes): https://www.youtube.com/watch?v=EkmdHVfk4XE

TL;DR: 1) It seems this is Intel's fault not Apple's 2) For fix - use TGPro (or something similar) to create your own fan speed profile (I use TGPro since many years without any issues)

Re: MacBook 16-inch Fan Noise (2019)

#308

Post by dijit »

Mandelmus wrote: post #285
dijit wrote: post #120

Earlier quoted context omitted.

Dell XPS 15's and Precisions 55xx's allow this trick. You can buy them from the manufacturer with no discrete graphics cards. I have one with a card which is physically turned off for the same trick.

Do you mean the XPS 13? I've never seen an XPS 15 in recent years without an NVIDIA card. The cheapest XPS 15 from 2019 that I can find still comes with the mobile NVIDIA GeForce GTX 1650, as does my own XPS 15 9560 from 2017.

I'm 2 days late! I'm so sorry!

If you go to dell.com and select one of the more entry level varients you can customise more things:

https://i.imgur.com/deQFdyU.png

Re: MacBook 16-inch Fan Noise (2019)

#309

Post by favadi »

mvkel wrote: post #305
gnudad wrote: post #28

This appears to be a software bug in macOS or AMD's drivers. Plugging in an external monitor at certain resolutions (1440p@60Hz in my case) will cause the AMD GPU to draw 18-20W constantly, no matter what it's doing. This causes the total system draw to increase from ~10W to ~30W. All that heat has to go somewhere. If I change the resolution of my external monitor to 1080p the AMD GPU drops to ~4W and the fans are qu…

This would explain why when an external monitor is plugged in, my battery drains despite being on a charger. When it reaches 5% battery, the CPU load goes to 800%. The fix? Unplug the external monitor.

That sounds like your laptop has a defected battery.

Re: MacBook 16-inch Fan Noise (2019)

#310

Post by muyuu »

ecliptik wrote: post #214
muyuu wrote: post #201

Earlier quoted context omitted.

I use my 2015 MBP with an external 4K monitor every day and it works like a charm. No delay, no fans going off, etc.

Does it have two GPUs it switches between? One high perf and one integrated? When I had a MBP 2015 I rarely had the fan come because it only had and and used an integrated GPU. With a 2018 MBP the fan frequently kicks on because it switches to the Radeon high perf GPU when doing things like connecting to an external monitor.

It's the maxed-out 13in. Intel Iris 1536 MB.

Not a sound.

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