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Apple/NVidia Driver Bug — Question Deleted

Joe Drago writes "I purchased a Mac Pro within the first week that they were available, and immediately upgraded to 3GB of RAM (knowing that OSX loves memory). When playing 3D games (World of Warcraft mainly), the game would Kernel Panic the machine if I had played it for a few hours, or if I swapped in and out of the game a few times, etc. I eventually found out (from an official Blizzard poster) that NVidia has a bug in their drivers that kernel panics a Mac Pro if any memory past the 2GB boundary is addressed in the driver. After waiting months for a resolution to this, I decided to post on Apple's support site. Here is an image of my post.. Within a few hours, they removed it from the site, placing it under 'Posts Removed by Administration.' What's going on here? Is Apple trying to hide this bug, or is there something more serious going on between Apple and NVidia?"

17 of 703 comments (clear)

  1. Intellectual property by Anonymous Coward · · Score: 5, Informative

    Wow, I'm kind of surprised this popped up on slashdot (I figured it would get mentioned in a blog, at most, and forgotten about). I'm one of the admins on that forum, and can confirm that yes, we've been asked to nuke anything regarding nVidia, at least in certain contexts. One recent addition to our arrangement with them (to provide kernel drivers) involves some very restrictive IP deals that upper management has interpreted to mean we shouldn't even acknowledge certain kinds of bugs in a very specific area. It's my understanding that there are some serious showstopper bugs inherent to nvidia's platform independent core code that they really do not want releasing. Most of us think this is utter BS (and management being paranoid), fwiw.

    And yes, there are enough forum admins that I'm not too scared about 'leaking' like this. Note that I'm keeping the exact details secret :p

  2. Driver support by Anonymous Coward · · Score: 5, Informative

    Apple and nVidia have both said, in public, many times, that in the specific case of Apple NV cards, the drivers are handled by Apple.

  3. Apple's Bugs by Liquid-Gecka · · Score: 5, Informative

    This is what I would expect. When I bugged apple about their broken NFS support on servers they told us that engineers would get back to us. They never did. So I started asking on forums and mailing lists to see if I could get an answer and as soon as I brought it up the thread would get killed or the post would be deleted. Then when we had issues with MPICH it as the same dang thing. Eventually they admitted that MPICH2 works much nicer on Mac OS than MPICH 1 due to some network implementations stuff. Every time I brought it up on the forums though the thread would get killed. (For the curious, the problem that we where having was that an Apple server running NFS would always seem to forget about the last file in a directory when it cached the directory contents. so running "mkdir a; cd a; touch 1 2 3 4 5 6 ; cd .. ; rm -rf a" would fail one out of four times when being done over NFS. If you waited a half an hour then ran rm -rf a it would work great. This issue didn't happen when Mac OS systems mounted Linux NFS shares, but happened every time a Linux or Mac OS system mounted a NFS share off of a Mac OS based system. This was still happening to all of our PPC based systems as of last summer when we finally switched them over to PPC Linux, which made the problem go away) I guess what I am saying is that it is not surprising. Apple has always nuked threads that made them look bad so why not this one?

  4. Re:A screen grab? by Anonymous Coward · · Score: 4, Informative

    Maybe he had it in his cache.

  5. Re:Wrong place? by Karzz1 · · Score: 5, Informative

    The video card was standard in his machine. In other words... it was supplied by Apple. The drivers he is using are from Apple. Nvidia doesn't even offer Mac drivers on their site.

    --
    Beware of he who would deny you access to information, for in his heart he dreams himself your master.
  6. Re:Wrong place? by duffbeer703 · · Score: 4, Informative

    NVidia will only directly support customers who purchase add-on cards. If you buy an Apple, Dell, HP, etc with an NVidia card, you need to work with the OEM to get a supported driver.

    --
    Conformity is the jailer of freedom and enemy of growth. -JFK
  7. Re:Hopefully this won't be deleted soon. by papplegate · · Score: 5, Informative

    The article was about a Mac Pro, not a MacBook Pro, which is a laptop. The MacBook Pro has an ATI video card not a NVidia card.

  8. Re:I really wanted to buy a MacBook Pro but... by Anonymous Coward · · Score: 4, Informative

    My experience with Apple's handling of reported bugs has been _very_ bad. I reported dozens of problems, all with as much technical information as possible (I am a OS programmer myself) and none of them got any resolution whatsoever except for some time passing comments which mostly intended to make me understand they don't care about the bugs.

    Of particular mention is a security bug - complete with stack traces, register values and other goodies. No response and the bug still exists after 3 releases of the product.

  9. Re:Here's my take on it by larry+bagina · · Score: 5, Informative

    That was a joke. However, Slashdot deletes posts. In the past, they've deleted posts containing scientology info, leaked MS source code, and DeCSS source code when lawyers threaten to sue. They've also deleted page widening and xss hacks. They also delete posts when archiving stories. It's not confirmed, but there was a lot of rumors that Michael Sims was fired for (among other reasons) deleting posts critical of him.

    --
    Do you even lift?

    These aren't the 'roids you're looking for.

  10. Re:A more obvious conclusion... by Petrushka · · Score: 4, Informative

    As a default setting, I'd agree. However, this post, this post, this post, and perhaps this post, suggest to me that that isn't the most likely explanation, but rather that there is a cross-platform nVidia problem. (Just talking about what seems more likely, not what necessarily is the case in actuality.)

  11. Re:I really wanted to buy a MacBook Pro but... by linuxpng · · Score: 4, Informative

    Tack that on to a reproducible core audio bug that makes the new dvd player app crash on certain disks. Reported that one till I was blue in the face.

  12. Re:A screen grab? by SuperBanana · · Score: 5, Informative

    How often do people take screen grabs of their posts to a forum? Was their expectation of it being removed?

    Apple routinely deletes posts discussing known defects; it's very well known among Apple-using techies. Apple has done it in almost every case where there have been hardware defects of any kind. A classic example would be the iBook motherboard failures. I would imagine they do it to a)keep other owners from finding out and demanding fixes as well, b)keeping the press from finding out, and c)to defend themselves in any lawsuits which can claim "well, people reported it on your forums, so you must have known about it!" So...yes.

    Web forums and mailing lists fuck with a classic PR/customer service move: deny all knowledge. I had a problem with speakers in my car, which in some cases had caused smoke or fire in this particular model. We called the car company, and each member of the forum, over a period of several weeks, was told "we have no knowledge of any other reports of problems with this model." They lied straight through their teeth. We later found out that over ten years before, a vehicle had completely burned to the ground because of the same defect, and company reps came out, looked at the car, purchased it back off the owner no questions asked, etc. They knew about the defect for over a decade and a half, and only after lots of bitching to NHSTA, did we get them to do anything about it. Oh, and dealing with NHSTA was another barrel of monkeys. Call their 800 number, and you get an operator who cannot do a single thing except ask for your address and send you the forms to report a problem. Once you do, they completely prevent you from speaking to the investigator at NHSTA to communicate further details et al.

  13. It's their responsibility by Sycraft-fu · · Score: 5, Informative

    nVidia doesn't do Apple drivers. They may have their engineers help write them, but they don't support or distribute them. Apple is solely responsible for supporting the hardware they ship with their systems because they want it that way. You go to nVidia's site you'll find drivers for Windows of all varieties, Linux 32 and 64-bit, FreeBSD, and even Solaris, but no OS-X. So when you have problems with nVidias on OS-X, it's Apple that you need to talk to.

    1. Re:It's their responsibility by RatPh!nk · · Score: 4, Informative

      You are incorrect, ATI and nVidia do write the code for the drivers that are included in the OS. I searched around the net, and I couldn't find any convincing evidence, but as a former employee, trust me. ATI/nVidia write the drivers, Apple does most of the Q&A. If you file a bugreport on a driver it will end up as being readable by ATI/nVidia, they have access to that category of bugs.

      --
      Argh. The laws of science be a harsh mistress.
  14. NVidia bug OR memory upgrade issue? by martyb · · Score: 5, Informative

    (Couldn't access the article's screen capture - site's bandwidth exceeded.)

    I did some googling around, and it appears that Mac Pro systems have been known to Kernel Panic in a number of cases after a memory upgrade. Have you considered that you might have TWO (intermittent) problems?

    According to this http://www.xlr8yourmac.com/systems/Mac_Pro/mac_pro _ram.html upgrade memory should have larger heatsinks than standard heatsinked FB-Dimms. It has links to: memory test utilities, ECC correction reports, and most notably:

    FYI - Page 2 of PC site Anandtech's Mac Pro upgrades article has comments on using standard heatsink FB-Dimms (which some readers previously reported worked ok so far at least, although others have noted ECC error corrections)

    "We had no problems running all of our benchmarks with the standard (flat heatsink) Crucial FB-DIMMs; however, if we ran a memory stress test for even just a short period of time the modules quickly reported correctable ECC errors. (Apple system profiler memory status section) Apple's original modules did not generate any ECC errors, so it looks like the additional cooling is necessary under the most extreme situations." (emphasis added)

    Questions:

    1. What brand of memory did you upgrade with? Apple? Crucial? Kingston? Other?
    2. Did your memory have the standard-sized or larger-sized heat sinks?
    3. What memory stress tests have you run?
    4. Were any ECC errors reported?
    5. What was the distribution of memory in your system? (which boards of what size and manufacture in which risers?)
    6. If you pull the original memory and use just the upgrade memory, does the problem still exist?

    Hope this helps!

  15. Re:Apple Policy gagged by avalys · · Score: 4, Informative

    You're freaking nuts, and ignorant to boot. DRM was not the reason Apple switched to Intel - there's nothing DRM-specific about the Intel architecture. Apple switched because IBM was not able to deliver a PowerPC laptop chip that met modern performance targets (yes, we all know the G5 was fast, but it also sucked down power and spewed out heat).

    And, name me one thing that Apple has done that involves DRM, besides the iTunes Music Store. You can't, because they haven't done ANYTHING. And the music store only has DRM at the insistence of the record labels.

    As for the iPhone, I can't argue there - I can only hope that Apple will come to its senses in the next six months, and open it up for public development.

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    This space intentionally left blank.
  16. scientology by commodoresloat · · Score: 4, Informative

    Don't use the scientology thing to put slashdot down for censorship. When Scientology threatened to sue, they did delete the post, but they then posted a frontpage story about being forced to take the post down that was basically an extended critique of Scientology, complete with a huge list of links to sources about the abuses of scientology, xenu.net links, etc., including links to the very material that they had been forced to remove. The offending material, of course, was reposted in another comment (probably several times over) in the new discussion. The net effect was not censorship at all but a huge expose against scientology that was probably seen by half a million readers. The offending material was removed from a single comment on slashdot where it probably would have been ignored, but links to the same material along with a coherent explanation of many of the things wrong with the church of scientology was posted to the front page where it was read and discussed publicly by a much larger audience than would have ever been exposed to it. It was a victory for free speech, and it's unfair to criticize slashdot for censorship based on that example.