Slashdot Mirror


Intel Says Clover Trail Atom CPU Won't Work With Linux

girlmad tips this news from the Inquirer: "Intel's Clover Trail Atom processor can be seen in various non-descript laptops around IDF and the firm provided a lot of architectural details on the chip, confirming details such as dual-core and a number of power states. However Intel said Clover Trail 'is a Windows 8 chip' and that 'the chip cannot run Linux.' While Intel's claim that Clover Trail won't run Linux is not quite true — after all, it is an x86 instruction set, so there is no major reason why the Linux kernel and userland will not run — given that the firm will not support it, device makers are unlikely to produce Linux Clover Trail devices for their own support reasons."

42 of 434 comments (clear)

  1. They've got it backwards. by Anonymous Coward · · Score: 5, Insightful

    Chips aren't exactly designed to "run Linux" or any other OS. It's Linux that supports CPUs.. NOT the other way around.

    All this means, is that Intel doesn't want to help. It does not mean it won't run Linux. Linux always finds a way to work.

    1. Re:They've got it backwards. by beck001 · · Score: 3, Insightful

      I am sure you didn't mean any disrespect, but the whole "Linux always finds a way to work" irks me. Linux doesn't fine a way, some extremely talented and hard working individuals spend vast amounts of their time building/designing/testing code to support hardware. It's not magical.

      Again, I am sure you didn't mean anything negative by your comment, but I have seen this perspective become pervasive an I'd like it stop.

    2. Re:They've got it backwards. by jawtheshark · · Score: 5, Funny

      Operating systems don't like it when you anthropomorphize them? ;-)

      --
      Ahhh...the great dumpster continuum. Many a free computer will be found there. -- sowth (748135)
    3. Re:They've got it backwards. by Dyinobal · · Score: 4, Funny

      The original comment made me think of Linux powered Velociraptors.

    4. Re:They've got it backwards. by TheGratefulNet · · Score: 4, Funny

      it IS magic. you really can get new kernels for hardware that has no docs released. you simply cat from /dev/skyfairy. a new kernel is given to you if the skyfairy device thinks you are worthy.

      --

      --
      "It is now safe to switch off your computer."
    5. Re:They've got it backwards. by JustOK · · Score: 5, Funny

      Imagine a Beowulf cluster of them.

      --
      rewriting history since 2109
    6. Re:They've got it backwards. by Noryungi · · Score: 4, Funny

      A beowulf cluster of Linux-powered Velociraptors? I'd pay good money to see that. From a safe distance.

      --
      The right to offend is far more important than the right not to be offended. (Rowan Atkinson)
    7. Re:They've got it backwards. by MikeBabcock · · Score: 5, Funny

      #!/bin/sh
      # million monkeys sky fairy code generator
      ln -s /dev/urandom /dev/skyfairy
      dd if=/dev/skyfairy of=/boot/bzImage bs=1k count=3000
      reboot

      --
      - Michael T. Babcock (Yes, I blog)
    8. Re:They've got it backwards. by Noryungi · · Score: 4, Funny

      You have to do a "mknod /dev/tooth bp" for /dev/skyfairy to create the new kernel. The temporary device is deleted after the kernel creation is completed.

      On some versions of Linux 3.x, you may need to init /dev/tooth for /dev/skyfairy to work correctly. Do read the man page.

      --
      The right to offend is far more important than the right not to be offended. (Rowan Atkinson)
    9. Re:They've got it backwards. by unitron · · Score: 4, Funny

      But how can you be sure?

      There's only one way.

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

  2. Qui Bono? by Simon+Brooke · · Score: 5, Insightful

    I can't see what possible benefit it is to Intel to deliberately limit the market for their processors. Unless they are doing this for Microsoft's benefit, in which case, surely, there are anti-trust implications?

    --
    I'm old enough to remember when discussions on Slashdot were well informed.
    1. Re:Qui Bono? by NoNonAlphaCharsHere · · Score: 4, Insightful

      No, It's just another case of Intel trying to steer the market in a certain (advantageous to Intel) direction. And the "cannot run" is a red herring, the real issue is "will not support"; and it's not so much "Linux" as "Android" that'll be lacking that support.

  3. Re:antitrust issues? by macromorgan · · Score: 5, Insightful

    Doubt it. They can choose to support or not support whatever they want. They just can't actively use their current monopoly position to harm competition in another market (operating systems). If they put in some special instructions that actively sabotage the Linux kernel from running, that would be one thing. From what it sounds like though, they are merely not providing drivers/source code for Linux for some of the CPU features for this platform. Of course since a lot of geeks will try to get Linux running on a toaster for the lulz, I expect this to only be a short-term hindrance.

  4. Anything can run linux by Dyinobal · · Score: 3, Insightful

    If there is one thing life has taught me it is that anything can run Linux. All intel has done now is simply issued a challenge which my guess is won't take long for some skilled hardware hacker.

    1. Re:Anything can run linux by Bill+Dimm · · Score: 4, Insightful

      All intel has done now is simply issued a challenge...

      Well, that's not all they've done. They've also pissed away a lot of karma with the Linux community.

  5. Really, Linux won't (currently) support CT by Jahava · · Score: 5, Informative

    So, as an aside, isn't the entire point of a tech aggregator to provide a technical summary? Not just copy and paste the article's summary... anyway...

    FTFA:

    Intel went to great lengths to highlight the new P-states and C-states in which it can completely shut down the clock of a core. The firm said the operating system needs to provide "hints" to the processor in order to make use of power states and it seems likely that such hints are presently not provided by the Linux kernel in order to properly make use of Clover Trail.

    In other words, Intel has added new capabilities to Clover Trail that allow enhanced power management, and Linux doesn't currently support it. Anyone who thinks that this will continue to be the case for much longer is a moron, especially if Intel continues to release its architecture datasheets, which we have no reason to think that they won't.

    The article really says: It can't run Linux because there's no support for it in Linux, and there's no support for it because it's literally brand-new.

    1. Re:Really, Linux won't (currently) support CT by pmontra · · Score: 4, Interesting

      I hope so (for them) because "it can't run Linux" means "no Android devices with our chip". That's a huge market to leave to the competition.

    2. Re:Really, Linux won't (currently) support CT by Truekaiser · · Score: 4, Insightful

      They stated this is a windows 8 only chip. So they won't release specs for other operating systems to use this. Also since windows 8 'require's' the uefi secure boot option, how much do you want to bet intel made Clover trail boards 'won't' support either disabling it nor adding your own keys?

      This won't stop linux dev's. Saying something can't work is a challenge to some of them. it's just intel won't provide patches for the in kernal systems to get it running, they might even go as far as to stop such patches being added if they actually 'did' make an agreement with microsoft to make this a 'windows 8 only' chip.

    3. Re:Really, Linux won't (currently) support CT by crazyjj · · Score: 4, Funny

      Bringing reason into a discussion about Windows vs. Linux *AND* actually reading the article?!?!

      Sir, I demand you surrender your Slashdot membership card!

      --
      What political party do you join when you don't like Bible-thumpers *or* hippies?
    4. Re:Really, Linux won't (currently) support CT by unixisc · · Score: 4, Interesting

      In that case, the article summary was currect. Yeah, Clover Trail is an x86 CPU, but it has certain new power management states that have to be software driven, presumably w/ new instructions. Since Linux currently doesn't make use of them (I'm assuming that Intel worked w/ MS to ensure that Windows 8 does), if a vendor puts Linux on top of it w/o customizing it for this CPU, then it won't take advantage of the power management techniques. As a result, such a tablet will gouge more power than it would running Windows 8, and that's why Intel currently doesn't want to support it.

      Once the next version of the Linux kernel - be it 3.5 or 3.6 - adds support for the Clover Trail instructions in its power management schemes, this CPU too will support Linux. The other possibility - Intel may be waiting for Android or Tizen to support this platform before it confirms that this CPU can run Linux.

  6. Re:antitrust issues? by WarmBoota · · Score: 4, Interesting

    IANAL, but I recall that Microsoft got in a bit of trouble because early versions of Windows were designed NOT to run on top of Digital Research DOS. Not going out of your way to support something is one thing, being exclusionary and abusing a monopoly position is another

    --
    90% of everything is crap. Also, crap is relative.
  7. Re:antitrust issues? by UnknowingFool · · Score: 4, Informative

    Sigh. Why is this one of the first reactions when a manufacturer doesn't do something you want them to do? Seriously, Intel not only does not have a monopoly of tablet processors, I would say they don't even have a majority. ARM processors power the vast majority of tablets. Intel is only hurting themselves by not supporting Linux.

    --
    Well, there's spam egg sausage and spam, that's not got much spam in it.
  8. Re:antitrust issues? by Errol+backfiring · · Score: 4, Insightful

    "Not supported" is very different from "Can't run Linux". I would call this monopoly abuse.

    --
    Nae king! Nae laird! Nae yurrupiean pressedent! We willna be fooled again!
  9. I hope, someone will get fired over that statement by Alex+Belits · · Score: 3, Interesting

    It is the first time ever that Intel announced direct hostility toward some piece of software -- I hope, it's just someone's fuckup and not a policy change.

    --
    Contrary to the popular belief, there indeed is no God.
  10. Intel and Microsoft teaming up to herd the masses by FriendlyLurker · · Score: 4, Insightful

    ...into the Appelsk walled garden that Windows 8 appears to be heralding in (Windows Store only apps, "for your own security, comfort and ease of use", coming to you in Windows 8.5/9). Last thing our walled gardeners want is an alternative OS weed like Linux, working perfectly on the same hardware...

  11. Sounds like BS by JDG1980 · · Score: 5, Interesting

    Is there any source for this statement besides The Inquirer? They're basically a tech tabloid and have gotten a lot of things wrong (or overly sensationalized) in the past. I checked Anandtech and Tom's Hardware, both of which covered Intel's presentations this week. No mention of this. I did a Google search for "clover trail" "Windows 8 chip" and found ONLY the Inquirer article and other articles and blog posts directly quoting and linking to it. No reliable third-party tech sites saying the same thing.

    This doesn't make sense in terms of Intel's overall philosophy. They have always been good about Linux support for nearly everything else – they don't want to get themselves tied in too closely with Microsoft, for fear that this would reduce their leverage.

    I think this story is bullshit. A generous interpretation would be that the reporter heard that the chip ran Windows 8 and that Linux *currently* did not have the necessary support for the "new P-states and C-states" in Clover Trail, and misinterpreted that as saying that only Windows 8 will ever be officially supported. A less generous interpretation is that the Inquirer knowingly made up this crap to get more page hits. In any case, I expect Intel to make their actual position clear soon enough, now that this story seems to have gone viral.

    1. Re:Sounds like BS by Guy+Harris · · Score: 3, Informative

      I did a Google search for "clover trail" "Windows 8 chip" and found ONLY the Inquirer article and other articles and blog posts directly quoting and linking to it.

      I did a Google search for

      "clover trail" linux site:intel.com

      and found a press release from June 2012 that said "The company has 20 design wins based on the forthcoming 32nm Intel® Atom SoC, codenamed “Clover Trail,” and designed for Microsoft* Windows* 8."

      "Designed for Microsoft Windows 8" could mean anything from "we designed it to be incapable of running anything other than Windows 8" to "our design target was Windows 8 tablets but if it runs other OSes that'd be just fine with us (but maybe that's unlikely because, for example, Android for tablets is mainly being used on ARM so maybe no manufacturer will care about using it to run anything else)" to "we designed it so that it would run Windows 8 better than earlier designs".

    2. Re:Sounds like BS by Guy+Harris · · Score: 3, Interesting

      Is there any source for this statement besides The Inquirer?

      Yes.

      Interestingly, the Ars Technical piece in question doesn't directly quote anybody from Intel saying Clover Trail “cannot run Linux”, they just say that the Inquirer reported that an Intel spokesperson at the Intel Developer Forum made that statement. What the Ars Technica piece reports from IDF is

      On September 11, Intel Architecture Group Executive Vice President David Perlmutter told IDF attendees in his keynote that the Clover Trail system-on-a-chip architecture was designed specifically for Windows 8 tablets and “convertibles.” In effect, Clover Trail is Intel’s effort to provide a full Windows 8 experience (including enterprise features missing from Windows RT) on devices competitive with ARM-based Windows 8 tablets.

      To achieve that, Intel worked closely with Microsoft to instrument the chip to allow Windows 8 to control Clover Trail's advanced power management features, which support what Perlmutter called "always-on" functionality. It's that special sauce in Clover Trail that won't be supported for other operating systems, including Linux, likely in part because of Intel’s desire to keep those features close to the vest—and because of contractual obligations to Microsoft.

      so maybe 1) you can't run on Clover Trail without using the advanced power management features and 2) the documentation of those features won't be public (Intel have had documented-but-not-publicly-documented hardware features in the past), in which case Clover Trail won't be able to run Linux unless and until the features in question are reverse-engineered (and maybe there are Intel and/or Microsoft patents on those features to get in the way of doing that).

      Or maybe not. Perhaps, for example, the features aren't required, but Linux-on-Clover-Trail will run the battery down faster if it doesn't use them.

  12. Re:antitrust issues? by postbigbang · · Score: 5, Insightful

    Let's say the reason is either one.

    Let's say that Intel wants to limit the audience for the chip, and cut their own sales. Let's say that AMD, VIA, and the ARMs makers will be delighted to fill in any vacuum.

    Do.We.Care?

    --
    ---- Teach Peace. It's Cheaper Than War.
  13. Re:antitrust issues? by sjames · · Score: 4, Insightful

    Actually it means Intel won't support running Linux on it.

    Apparently Wintel is alive and well.

  14. Re:antitrust issues? by WarmBoota · · Score: 3, Interesting

    Interesting perspective, but Microsoft obviously did something bad enough to compel them to pay Caldera at least 155 million (http://www.windowsitpro.com/article/news2/microsoft-settles-dr-dos-antitrust-lawsuit) . Something tells me if this was just a blip in a beta, they'd take it to court.

    --
    90% of everything is crap. Also, crap is relative.
  15. Re:antitrust issues? by poetmatt · · Score: 3, Interesting

    actually, parent is correct. There are antitrust issues to be investigated here. This has nothing to do with choosing to support something or not, and is a very bad move by intel. If it were choosing they would say "this processor is not designed for linux" not "this processor will not *work* with linux". Sounds small, but it's of critical importance. The reality is that the antitrust issue is not with Intel - it is with Microsoft.

    Why should anyone use the x86 instruction set if they're explicitly saying that things are not compatible? All they're trying to say to people is "please use ARM", which is not the smartest idea. That is entirely different from what intel is implying, which is that the BIOS issues regarding windows 8 preventing other operating systems from running...that issue from before.

    So all this is, is basically antitrust fodder against MS.

  16. Re:antitrust issues? by KingMotley · · Score: 3, Insightful

    There aren't any antitrust issues here. Intel can do whatever it wants with it's processors so long as it doesn't use it's processors (I'm not even sure you could call Intel a monopoly in processors, but that would be for a court to decide) to give another of their products an unfair advantage.

    Pretty much the same for Microsoft. Unless you think somehow Microsoft strong armed Intel into it, and can prove it in court. Even then it would be difficult. You would have to prove that Microsoft abused it's monopoly position in OSes to do so in a way that harms consumers. Good luck with that.

  17. Re:antitrust issues? by jittles · · Score: 3, Informative

    I can tell you that I ran windows 3.0 and 3.1 on DRDos 6 with no problems whatsoever. I never owned or used Microsoft DOS. So if there was some compatibility or stability problem I never saw it.

  18. Re:antitrust issues? by Khyber · · Score: 3, Insightful

    "Intel is just not going the extra step to allow Linux compatibility"

    According to TFA: However Intel said Clover Trail "is a Windows 8 chip" and that "the chip cannot run Linux".

    That's not saying "We won't support it" that's LYING IN MARKET about the capabilities of its chip and causing direct harm to a competing kernel and subset of operating systems based upon that kernel.

    --
    Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
  19. Re:antitrust issues? by Khyber · · Score: 4, Insightful

    "There aren't any antitrust issues here."

    Bullshit, Intel is falsely advertising that a chip with all the standard (for today) x86 instructions will not run Linux, which is an x86 compatible kernel, and says that the chip is for Windows 8. Intel is colluding with Microsoft in this instance to create an anticompetitive market.

    FALSE ADVERTISING IS STILL ILLEGAL AND AN ANTITRUST ISSUE WHEN A CONVICTED MONOPOLIST IS INVOLVED.

    --
    Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
  20. PowerVR SGX by ssam · · Score: 3, Insightful

    I think this mostly due to the PowerVR SGX graphics engine (remember the gma500 poulsbo). for the gma500 intel made a binary linux driver that did not impress anyone. I guess for clovertrail they are just not bothering with releasing a binary driver.

    So it might work fine as a CPU, but have no graphics acceleration. however for a tablet chip that cannot play video or composite a desktop in software, it might be effectively useless.

  21. Re:antitrust issues? by Ancient_Hacker · · Score: 3, Informative

    Well, I never thought I'd be standing up for Microsoft, at least a little, But IMHO they had at least a LITTLE justification for putting up the warning message. Old Windows HAD to make MANY patches into the DOS resident code, and it depended on MANY undocumented data areas inside the DOS resident code. Any DOS clone, if it was to have a chance of running Windows, had to be very carefully engineered to match all those undocumented locations in DOS. The odds of Digital Research being able to guess all the exact locations that Windows depends on, and will depend on, is somewhat slight.

  22. Re:antitrust issues? by marcosdumay · · Score: 3, Insightful

    You know that this is a processor, right? A processor is something that you use at both phones,tablets, netbooks, notebooks, desktops, workstations and servers. Also, all of those categories are fuzzy, and processors do leak to the neigboring ones.

    For the looks of it, this one is a tablet's processor. On tablets, iOS has most of the market, Linux is a minority and Windows does not even mark outside of the error margin, that last OS is the one Intel is going to support. Of course, it will leak to netbooks and notebooks, where Windows rules (but is losing space fast for OS-X).

    I have no idea why Intel would even make such a decision, and I doubt AMD, VIA, or ARM management agree with it. From the public info it just doesn't make any sense, there must be something Intel is hidding.

  23. Re:smart ploy! by retep · · Score: 4, Informative

    They tried writing drivers themselves and again they sucked.

    Dead wrong. Intel drivers are excellent and I and many others have had great success with them. They also usually work quite closely with the kernel community as a whole to make sure things work as expected; that's why what this article is saying seems to out of character for Intel. For instance, try searching for "intel.com" in the git commit log. Lots of kernel developers are on Intel's payroll, including core people like Alan Cox.

  24. Re:antitrust issues? by NatasRevol · · Score: 5, Informative

    No, that's not what TFA says:

    "The firm said the operating system needs to provide "hints" to the processor in order to make use of power states and it seems likely that such hints are presently not provided by the Linux kernel in order to properly make use of Clover Trail."

    I doubt this will be very difficult for Linux to put into the kernel.

    --
    There are two types of people in the world: Those who crave closure
  25. Re:antitrust issues? by arth1 · · Score: 4, Funny

    I think I could count on one hand the number of Windows 8 users worldwide and I think that 7 of them are bored with it.

    My name is Inigo Montoya. You killed my father. Prepare to die.