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Bug Desktops (Apple) Portables (Apple) Software Apple

Apple's Newest Macs Seem To Have a Serious Audio Bug (thurrott.com) 144

An anonymous reader writes: Apple's new Mac products might have a serious audio glitch for professional users. The company's newest Mac products with its T2 security chip suffer from a software-related bug that leads to issues with audio performance. The issue seemingly affects devices with the T2 chip -- that includes the iMac Pro, Mac Mini 2018, MacBook Air 2018, and MacBook Pro 2018. Although Apple's T2 chip is designed to offer improved security, it's affecting users in the pro audio industry.

As CDM reports, there is a bug in macOS that leads to dropouts and glitches in audio whenever a Mac automatically updates its system clock through the system time daemon. Users have been reporting the issue across a bunch of different pro audio forums for months, and it seems like the issue has never been acknowledged by Cupertino. The issue here is pretty simple to understand, as explained by a DJ software developer on Reddit: whenever the system time daemon automatically updates the system time, it somehow sends a 'pause-audio-engine' message to the kernel, leading to dropouts and glitches in audio.

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Apple's Newest Macs Seem To Have a Serious Audio Bug

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  • by ctilsie242 ( 4841247 ) on Tuesday February 19, 2019 @01:40PM (#58146116)

    Because the T2 chip blocks access to the internal SSD when the security level is set to off, making it impractical to install Linux or another OS when Apple starts supporting that laptop, that is a deal killer for me

    Disclaimer: I could be wrong, but I've not found anything that states one can both turn security off, and install Linux on the internal SSD on a T2 equipped Mac. You can turn security off and use external flash drive media, but the internal drive is inaccessible. It would be nice if Apple allowed the SSD to work, and provided support for Microsoft compliant shims, so one could have Secure UEFI boot to RedHat, Ubuntu, or other operating systems and have some faith that the kernel hasn't been tampered with.

    Between this, and the other Mac issues (keyboard, audio), looks like my next MacBook Pro may be a Dell Latitude model, which in some ways is a better MBP than a MBP, if only because it supports USB-C, and USB-A without needing a dock or dongles.

    • by SuperKendall ( 25149 ) on Tuesday February 19, 2019 @01:49PM (#58146190)

      Because the T2 chip blocks access to the internal SSD when the security level is set to off,

      I thought you could disable secure boot [apple.com] on the Mac, which should let you install any OS you like on the internal SSD...

      I fully admit I've not tried that though so it could be there's some other aspect to that I did not know about. But this article [omgubuntu.co.uk] sure makes it look like that setting has the effect of letting you boot into Linux on a T2 Mac.

      • Comment removed based on user account deletion
      • That article is correct, ... providing you have another SSD or an external drive. You need to disable secure boot to be able to boot from another drive or another OS, but in doing so the T2 chips locks down the internal SSD.

        At least that's the presumption. It could very well be that the drivers for the SSD are just missing since it's a proprietary controller and not an off the shelf NVMe drive, but what is known is that the SSD communicates via the T2 chip, and the T2 chip intentionally hides itself from th

    • by kb7oeb ( 543726 )
      My understanding is the problem is there is no linux driver for the apple SSD. https://bugzilla.kernel.org/sh... [kernel.org]
      • by jwhyche ( 6192 )

        My understanding is the problem is there is no linux driver for the apple SSD. https://bugzilla.kernel.org/sh [kernel.org]...

        Why would you buy over priced apple hardware just to install linux on it? There are any number of ryzen, or even intel, based laptops for half the price with better or greater performance. An these laptops tend to be a lot more penguin friendly. No weird apple shit to deal with.

        • by hey! ( 33014 )

          Well, by that argument, why would argue allow Linux to boot by an UEFI shim?

          The point is it doesn't have to make sense to you. People own the computers, and if they want to install FreeDOS on it, they should be able to even if you think that's stupid.

          • If you're going to replace what may be the number one thing that sets Apple apart (the OS), then why would you pay more for hardware that is well behind the competition and a laptop that is designed to be hard to service/upgrade?
             
            Sure, it doesn't have to make sense to me, but I struggle to see how it could make sense to anyone.

            • by hey! ( 33014 )

              What's the number one thing to you is not necessarily the number one thing for other people.

              • it's not my number one, because i don't really care. My statement was that the OS is the main thing that distinguishes a Mac from anything else. Buying a sub par computer and removing that part just seems odd.

    • Simply having the storage soldered to the board is too much of a problem for me. M.2 drives don't take up that much space, and are a much better solution to soldering the storage directly to the board. Even if you plan to never use anything other than MacOS, having the storage soldered to the board is a completely ridiculous idea with no other reason than to prevent people from upgrading/fixing the machine by themselves in the future.

      • it's so apple can change $800 to upgrade from 128GB to 1TB vs $250 for 1TB m.2 card.

      • But, then how will they get you to buy an entirely new machine when all you want to do is increase or storage? Or get you to grossly over-spend on your initial purchase do you don't have to worry about it later?

        How dare you put your needs ahead of Apple's bottom line?

      • by hey! ( 33014 )

        Just to play devil's advocate here, it's not just about space. By soldering on the SSD and putting it behind as crypto chip, you complicate the job of, say, the police if they want to recover data from it.

        Suppose a flaw in the encryption existed that allowed you recover the key used by the encryption chip. Desoldering the SSD and putting it in a test rig won't stop the NSA, but it will sure slow down casual hackers.

        A lot of this architecture actually makes sense from a security standpoint. Biometric cred

        • Biometric credentials stored in cleartext give me the heebie-jeebies.

          It's biometric credentials stored in the refrigerator that should give you the heebie-jeebies.

          "So, I need the owner's finger to unlock this?" [gets out knife]

          "So, I need the owner's face to unlock this?" [gets out bigger knife]

          ...and then there's the old...

          "So, the owner has to be alive?" [gets out bottle of chloroform and a washcloth] and [hey Larry, you still have that pipe wrench?] and of course [that's a nice /noun/ you have there...

    • by hey! ( 33014 )

      This is just UEFI secure boot being turned on by default. Turn it off and you can boot any unsigned kernel you want, it's in Apple's support database (google HT208330).

      It's not different from what you go through with other UEFI firmware, except Apple's branding obscures that fact.

    • That's the reason? After all of the years of abuse? The over priced fragile hardware? The proprietary protocols and connectors? The constant build quality issues? You decide the T2 chip is finally the one that breaks the camel's back. They have almost always had disdain for their customers. I can accept that at one point they may have made some of the best laptops but that was a long time ago and reliability and serviceability have never been great. How can you use free software but run it on hardware that'
      • by gozar ( 39392 )

        The proprietary protocols and connectors?

        The only proprietary connector used on a Mac in the last 15 years is the Magsafe connector. Every other port was a standard: USB-A, Ethernet, Firewire 400, Firewire 800, mini-VGA, mini-DVI, mini-displayport, Thunderbolt, USB-C.

    • Between this, and the other Mac issues (keyboard, audio), looks like my next MacBook Pro may be a Dell Latitude model.

      So apart from the thermal throttling, the flat cable display problems, the keyboard with a lack of travel and dust rendering keys unusable, audio lag/glitches, T2 locking down the internal SSD and the low-res blurry webcam of the 2018 MacBook Air, everything is okay!

      Sent from my 2010 Mac mini, which I upgraded myself.

  • difference (Score:4, Insightful)

    by supernova87a ( 532540 ) <kepler1@@@hotmail...com> on Tuesday February 19, 2019 @01:43PM (#58146138)
    All systems have bugs. The difference with Apple is that generally, the bugs get fixed and the hardware gets supported. As much as you hate their prices and controlled environment, can you say the same of other hardware manufacturers?
    • by jwhyche ( 6192 )

      Yeah. I had a dell laptop got tits up on me. Dell sent a technician to my office with a brand new laptop. He pulled the drive out of my old one, and put it in the new one.

      Meanwhile the apple in another department died. It had to be taken down to the "genus" bar where one of the "geniuses" wanted to charge him a "copy" fee to move his shit from the old one to the new one. The hard ware was covered but the data transfer wasn't.

      • Sounds like your business had a service agreement with Dell and didn't have one with Apple, so that's a bit of an apples-to-oranges comparison and on a wholly unrelated topic from the subject of whether bugs get fixed, which was what the OP was talking about.

        • by jwhyche ( 6192 )

          We did. I was the one that set up the service agreement with them. Apple didn't have such agreement or didn't want to make one with us. Which is probably why there are far more Dell in the work place than Apples. Which is pretty stupid for Apple.

          So I find that Dell equipment is just as reliable as Apple, if not more. There are more Dell failures in the field simply because there are 10 Dells for every Apple. Give or take. Dell more than makes up for these failures by having a fair superior service

    • by Jahoda ( 2715225 )
      All systems have bugs. The difference with Apple is that generally, the bugs get fixed and the hardware gets supported. As much as you hate their prices and controlled environment, can you say the same of other hardware manufacturers?

      Wow, interesting take. I'm trying to think about the last time the custom security chip and a time daemon update caused ASIO to stop working on my Windows boxes. Hmmmm. Can't seem to come up with it.
    • I bet to differ, I had a first gen macbook air, a 2500 dollar stinker never fixed.
      The system was overheating and crashing so apples fix was to simply toggle down the processor once it hits critical temp to a non usable state, this happened after 10 minutes pushing the system into an unusable crawl state.
      Then the hinges broke, this was fixed by a repair program after apple lost a class action suit (so no fix before they lost in court)
      Apple never admitted the heating problems, but silently made a bugfix revis

    • Used to be the case moreso than it is now. I've happily paid more for "Just Works" several times over the years, but they don't seem to be selling that any longer.

      In retrospect, needing to buy a 3rd party app to print from my iPad to the laser printer my iMac is sharing on the network was the first sign of trouble.

    • Eh, it is exactly the opposite of that. Apple is guaranteed to fix only high-profile bugs and will try to screw you out of support. I've been using Macs at work for a bit over a decade and the examples are too numerous to list, but I'll give some characteristic examples:
      - iPhone 4/4s had a thermal sensor in the wireless module that had a very high failure rate after the first year. The firmware that enabled it came as an update for the iPhone 4, people who never updated did not have an issue, but a good per

    • I could go on a huge rant about all the problems I had with my previous Macs that Apple never acknowledged and never fixed. Audio not working at all, CD-ROMs disappearing after a system update, can't do a factory reset with the original install media, can't use any non-Apple display because the DVI-D port is not clocked to spec...

      But, nobody ever believes me 'cause I'm just a "hater". I don't bother anymore.

    • can you say the same of other hardware manufacturers?

      Erm yes. Still have some very old and very working Dell laptops here. On the other hand you can't even install Linux on a fancy new Apple laptop, at least not on the internal drive.

  • Pro audio users have been abandoning the Apple platforms for years. You'll still find some trust fund EDM kiddies who use it, but this is a sector I pay attention to and a lot of people who cut their pro audio teeth on Macs are now using Windows machines instead. Linux will eventually get there, but now it's mainly a platform that pro audio users run as an adjunct to a main Windows DAW.

    • by GuB-42 ( 2483988 )

      I don't know, just about every DJs I have seen (in person and in pictures) have a MacBook proudly exposed on stage. Some use no computer at all, but I've yet to see a professional DJ with a Windows PC.
      They may be using Windows PCs behind the scenes but the Apple logo is still shown to millions of spectators.

      • But it's not like you can't put an Apple logo sticker on any other brand of laptops.

      • I don't know, just about every DJs I have seen (in person and in pictures) have a MacBook proudly exposed on stage.

        Yes, as I said, the EDM crowd still show off their MacBooks like gold chains on a rapper. But if you keep an eye out for the working DJs, you'll see Windows machines. And in the professional recording/production world, Windows machines have been taking over.

        It's a big change. I cut my teeth using Macs for music production. The advantages have been diminishing and Windows advantages have bee

  • I'll be back!

    Come to think of it Apple is just the type of company to create something like Skynet.
  • Seems the summary is an attempt at finding how many different ways they could phrase the same information?
  • Windows has no true multichannel audio subsystem suitable for audio recording, so everyone uses ASIO, which is proprietary. Audio under windows could have better latency.
    Linux has a good audio subsystem, JACK, but it's not standardized, and the kernel has to be completely recompiled for low-latency.
    Macs have a good audio system, but they have no 5.1 ports on anything, and to read this article, they screwing things up.
    Android doesn't have much of an audio system, and it frequently pauses, and so far, only
    • Which is why every audio professional I know uses Amiga and Atari ST computers.

      p.s.: I do not know any audio professional.

    • Great post, I'd give you a mod point if I had any right now. Information and experience showing that there are no perfect choices. More and more, I feel this is a general case in computing.
  • Once upon a time, there was only one platform that you used for Pro-Audio or video post production. Apple already moved the entire industry to Avid with their Final Cut Fiasco. Considering that so-called system stability was about the only remaining reason to use an Apple vs. a Windows machine for Audio production (not that I've had a "click" from an ASIO device since 2009), this seems like yet another boneheaded move from the company that appears to think that they'll be selling iPhones forever.
  • Not computers

    They don't scale and def don't sound melodic, lyrical or real. Just try bells on a laptop then plug into FOH system. You'll understand dynamics in an instant.

  • ...iToddlers will defend this.
  • Shoot I was hoping why the bluetooth starts cutting out randomly and with loud pops after the laptop comes back from suspension.
  • Although not as irritating, I really see Tim Cook as Apple's Steve Ballmer... Business and supply chain focused, but actually crap at design and strategic direction and inspiring customers... Apple just needs to find it's Satya Nadella.
  • please stop calling it a security chip.
    the only thing it secures is a bunch of benefits for Apple, not for the user.

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