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  1. #1
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    Exclamation [MAIN\MERGED] Intel Skylake & Kaby Lake Hyperthreading Bug

    It has been confirmed that Intel's Skylake/Kaby Lake hyper-threading can present serious issues that can be fixed by a BIOS/UEFI update that targets Intel processor errata KBL095, KBW095 or the similar one for Kaby Lake processor.

    Any plans for such update to come? On Kaby Lake it seems the most safe route at the moment is to simply disable hyper-threading until ASUS provides a new BIOS that addresses this. On Skylake there's the option on ArchLinux side, for example, to install extra/intel-ucode to get microcode updates since there's a fix in revision 0xb9/0xba and later. Windows doesn't have a microcode update for this yet, afaik.

    Source: https://lists.debian.org/debian-deve.../msg00308.html
    Last edited by pepper_chico; 06-26-2017 at 07:02 AM.

  2. #2
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    Intel Skylake and Kaby Lake Hyperthreading Bug

    Have you already heard from this news:
    https://www.theregister.co.uk/2017/0...microcode_bug/

    Does anybody know if there is a fix available from Asus yet?

  3. #3
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    I hope, that bug is caussing the issue know as heat spikes.
    And after the fix, there will be none.

  4. #4
    ROG Guru: White Belt Array no1yak PC Specs
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    Quote Originally Posted by Links View Post
    I hope, that bug is caussing the issue know as heat spikes.
    And after the fix, there will be none.
    I wouldn't hold your breath on Asus responding to this new problem anytime soon, they haven't sorted out the problems that some people are having with Bios vesionr 0906.

  5. #5
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    I just built a new rig on Z270F a few days ago. I'm doing a lot of programming and I use VMs all the time. Disabling Hyper Threading isn't something I would be happy to do. It seems that the last BIOS update for my MB came out in March (about 3 months ago at the time I'm writing this). I hope another update (that fixes this problem) comes out soon. I have to say, though, that so far, I haven't experienced any problems.

  6. #6
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    Quote Originally Posted by Links View Post
    I hope, that bug is caussing the issue know as heat spikes.
    And after the fix, there will be none.
    I wonder whether this could possibly be related with this bug report I've opened some time ago:

    - General artifacs shortly after CPU warming up

    I was able to fix by downgrading Mesa.

    Actually, now that this information has surfaced, I'll verify this later again with HT disabled.

  7. #7
    ROG Guru: White Belt Array Links PC Specs
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    Quote Originally Posted by no1yak View Post
    I wouldn't hold your breath on Asus responding to this new problem anytime soon, they haven't sorted out the problems that some people are having with Bios vesionr 0906.
    Nowadays manufacturers only hurry on sales.
    On that same reason I can't hold my breath on intel and corsair.

    But at least now the bug has shown itself.
    Maybe it will make someone move.

  8. #8
    ROG Guru: White Belt Array no1yak PC Specs
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    Quote Originally Posted by Links View Post
    Nowadays manufacturers only hurry on sales.
    On that same reason I can't hold my breath on intel and corsair.

    But at least now the bug has shown itself.
    Maybe it will make someone move.
    Your probably right. most companies are only interested in sales , once they have your money they are not interested. The bigger the company the worst they are.
    To many products, poor customer relations staff that shouldn't be in the job in the first place.

    With this latest thing about Hyper -threading .having taken a look at Intels errata on the subject I personally haven't a clue how or if it would affect me.
    Last edited by no1yak; 06-26-2017 at 05:49 PM.

  9. #9
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    The only thing we can do is wait.
    Nobody is listening to us.

  10. #10
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    Would very much like to know as well, latest BIOS release notes say nothing about it:

    MAXIMUS VIII GENE BIOS 3401 - 2017/04/07 update
    1.Improved System Performance
    2.Modified OA key function in legacy OS
    3.Fixed some PS/2 devices connection issue in win8/win10 when fast startup is enabled
    4.Fixed chassis fan’s behavior after wake up from S3
    5.Fixed CPU(i3-7350K) ratio item missing issue in SW

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