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Re: undefined

#121

Post by Aeolun »

saagarjha wrote: post #93
eyelidlessness wrote: post #65

Earlier quoted context omitted.

This has been a known (albeit apparently not well known) issue/solution since the first USB-C macs were introduced. The cause is the placement of internals and sensors and their proximity to the ports on each side. You can “prove” (demonstrate) it without opening the case by taking a stock MBP, putting it under medium load that’s enough to generate heat without other factors, then compare fan speed and performance wi…

See, that's exactly what I'm talking about. People have looked at the sensor placement and conjectured that kernel_task CPU usage is related to it doing some sort of throttling. It's a good hypothesis! But nobody has finished the job by going through a trace and actually checking that the kernel is doing that. That's the missing portion I'm asking for.

I’m fairly certain I’ve seen an article somewhere with someone going through the trace and showing that kernel task is just spinning it’s wheels, generating artificial business to dump load.

Re: undefined

#122

Post by rdsubhas »

keymone wrote: post #120

I wonder how much of this and other thermal issues with MacBooks are just a marketing stunt to better sell m1 devices. Not that m1 needs that kind of marketing, Apple yet again set the standard for best laptop on the market, possibly for another decade, but I can totally see these anti-intel subversions being discussed somewhere deep in the catacombs of the mothership.

Are you implying that they built in artificial stunt thermal issues in those 4 year old laptops, so that they can use that as marketing to sell more m1 devices 4 years in the future?

Re: undefined

#123

Post by mdoms »

colordrops wrote: post #7

I tried this and it doesn't work. Turns out my MacBook was throttling to 30% due to overheating. This happens more frequently if you drive the GPU with an external monitor. Unfortunately the OS does nothing to notify you of overheating and throttling, which is an insanely stupid oversight by apple. I only found out because I noticed that the computer ran fine while running the AC, so I installed an app through Brew c…

I don't even use an external monitor with my work MBP despite having one available to me. If just completely destroys the computer's capabilities.

Re: undefined

#124

Post by joconde »

lelandfe wrote: post #108
WA wrote: post #105

Earlier quoted context omitted.

My MBP 16" can‘t run my LG Ultrafine 5K (sold by Apple) without fan noise. Recently I also figured out that "automatic switching of graphic mode" (enabled by default) causes noticeable input lag. If I type text, the last typed character sometimes doesn’t show until another character is typed or I have to wait up to 5 seconds(!). Turning off "automatic graphic mode switching" stopped the input lag completely, but the…

Similar feeling when I learned that my M1 Macbook doesn't support two external displays...

I like that they clearly admitted to it, so I know what I'm buying. Other products usually pretend to support anything and let me discover the issues after purchase (like an XPS 15 with a GPU that couldn't actually run games the GPU supported, because of insane thermal throttling).

Re: undefined

#125

Post by viktorcode »

tmpz22 wrote: post #15

Tinfoil hat: they knew the M1 macs would be a big draw and got intentionally soft on optimizing 2019 intel models.

You got that backwards.

MacBooks of different kinds were plagued with overheating issues for many years. I still remember daily struggle trying to keep 2011 Pro running cool. Eventually, Intel's inability to provide power efficient and performant CPUs on schedule led to Apple dedicating themselves to producing their own chip.

So, it is because of constant overheating issues we have M1 now.

Re: undefined

#126

Post by quenix »

grahamplace wrote: post #86
walrus01 wrote: post #19

I also recently discovered that something like 12% of CPU on my 2020 macbook air is used whenever I'm in a room with anything greater than perfect silence, by 'coreaudiod', because it apparently is constantly listening to the microphone built in near the keyboard and spending cpu cycles trying to filter out background noise. Apparently running the signal desktop app in the background is enough to keep coreaudiod cons…

> I also recently discovered that something like 12% of CPU on my 2020 macbook air is used whenever I'm in a room with anything greater than perfect silence, by 'coreaudiod', because it apparently is constantly listening to the microphone built in near the keyboard and spending cpu cycles trying to filter out background noise. Apparently running the signal desktop app in the background is enough to keep coreaudiod co…

I believe Hey Siri functionality is handled by lower level audio chips, not in user land. At least that’s how it’s done on the iPhone

Re: undefined

#127

Post by ithkuil »

sprite wrote: post #3

My 2019 16-inch MacBook Pro (2.3ghz i9/64gb ram) becomes unusable with 2 of the LG 5k monitors plugged in (one on each side). Worst MacBook I have ever owned.

I yet have to find a non apple laptop that can run one 5k monitor...

Re: undefined

#128

Post by rejectfinite »

Having a normal 2014 i7 4790k desktop + dedicated GPU that thread is hilarious.

Just buy/build a desktop PC and you can hook up everything. I have 3 1440p monitors with a 1070ti and its great. The fan turns off under 55C and it is under that for normal desktop usage.

I also have a Lenovo T490 from work. Using internal Intel GPU 2x 1440p monitors is fine. Dunno wtf Apple is doing.

Imagine not being able to hook up external monitors...

Pointing fans at the laptop!?

Re: undefined

#129

Post by h3mb3 »

nickporter wrote: post #41

These things usually fix performance issues for me: - Open your macbook and clean out the dust. I do it yearly. It always helps. - Keep macOS and apps (e.g. browser) up-to-date. coreaudiod high cpu was fixed for me in 11.6. - Review login items, delete what you don't need. - Reboot, with the occasional nvram, pram reset - Review activity monitor, find apps that have background processes and delete the ones you don't…

> Open your macbook and clean out the dust. I do it yearly. It always helps.

I thought you couldn't do this without special skills/tools nowadays (models from the past 4 to 5 years).

Re: undefined

#130

Post by rejectfinite »

evilduck wrote: post #64
walrus01 wrote: post #24

Earlier quoted context omitted.

yeah I just checked and the modern version of my 17 inch laptop monster, which is about 8.1 pounds, is down to 5.95 pounds in a 17 inch version with an intel 11800 something mobile CPU, and geforce 3070 in it. Probably still has a huge external power brick.

I have a 13" M1 MBA and a 16" Legion gaming laptop. They're both good computers for their own purposes but the 230 watt power supply for the Legion is almost as heavy as the MBA (2.2 vs 2.8 pounds). Carrying the computer and the charger together my Lenovo is more than 3x heavier than the MBA. Gaming laptops are just more-portable desktops to me. I would slip the M1 in a backpack without a second thought. It can even…

But people seem to use those maxed out 16" macbooks as desktops replacements anyway, always hooked up to monitors. Even though it seems like Apple is not even testing hooking up monitors.
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