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Apple’s latest Macs still suffer from the same audio flaws

lundi 27 mai 2019, 12:57 , par Create Digital Music
Apple has unveiled new MacBook Pro models. But that machine still includes the troubled T2 security chip used on all Macs from 2018 onward – and there’s no complete fix yet for the audio problems it can cause. So what should you do?
The big news last week was that Apple had a big spec bump on its top-of-range 15″ MacBook Pro – a speedy 6-core entry level, plus for the first time 8-core CPUs in the Apple notebooks. Apple even touts the ability to run more instances of plug-ins like Alchemy in Logic Pro, so they do have the music market in mind – at least as far as what they put in the press release. The 13″ MacBook Pro gets a more modest update. The Verge breaks down the changes.
These changes are unlikely to inspire PC users, who already had access to these chips. But they’re big news on the Mac side.
The thing is, while CPU and disk performance do aid audio, we’re far more reliant on stability – CPU horsepower is nice to have, but rock-solid audio performance is essential. And that’s where the Mac continues to completely unravel.
There is no reported change on the new MacBook Pro to the T2 security chipset that is the cause of these problems. It’s therefore safe to assume that they will inherit these same issues, barring a fix from Apple.
Security and audio have clashed, it seems, since the T2’s introduction across the Apple computer line in 2018.
No, it’s still (mostly) not fixed
The T2 security chip continues to wreak havoc with audio performance – and the 2019 MacBook Pro, like all Macs since a 2018 revision, continues to use it and inherit its audio stability issues.
Even after a recent OS update that “addressed” performance, we are still hearing widespread reports that the new Macs exhibit this issue. And normally when I say I’m “hearing” them, I mean people are writing to tell me about it. In the case of the T2 issues, I actually keep literally hearing it. You’ll go to a concert or festival, and listen to one MacBook Pro after another glitching with the issue. You’ll sit for a meeting and hear it going on in the background.
Given that it’s widespread but not universal, it remains unclear why some people are having the issue and others not. (Just as with any reliability issue, someone will always chime in and say “but I’m not having any trouble.” Um, good for you?) The only way to solve it for now appears to be to add a Thunderbolt hub and connect USB audio devices to that – avoiding the internal sound system or connecting USB audio interfaces directly.
Here’s the initial report from February:
Apple’s latest Macs have a serious audio glitching bug

In March, I wrote about 10.14.4 update:
Apple ships update it says addresses USB audio issues on recent Macs

But 10.14.4 for most users I’ve spoken to reduces but doesn’t fix the problem.
One workaround (and again, this is on 10.14.4) is to manually script an override:

@cdmblogs R.E. 2018 MBP glitching – I've been using this script to offload timed with SIP disabled and not had any problems with glitching since: sudo launchctl unload /System/Library/LaunchDaemons/com.apple.timed.plist
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