Skylake / Kaby Lake Hyper-threading bug

Discussion in 'Hardware Components and Aftermarket Upgrades' started by Assembler, Jun 26, 2017.

  1. Papusan

    Papusan BGA Filthy = That sucks!! STAHP! Dont buy FILTH...

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    Nice seeing people take a look on TS. You can play with 4 OC profiles. Put safe voltage settings for your oc. Then try different voltage settings in your testing without put a fixed all too low voltage. A easier way finding what fits your chips.

    See post above. Xtu is more for those who like a fancy not useful colorful graphs. But forget it will eat more processor cycles vs. TS.

    Although this Xtu functionality/features, I have run into bootloops or even no boot with XTU running before on my AW17. I wouldn't trust it too much. And the 2013 models from Alienware was a pain in the ass fixing Nvram reset. A screwed design aka where Cmos battery was placed and how the reset functionality worked. Almost impossible to fix it. Especially with the 120Hz models. Maybe better reset functionality now for newer laptop models. But some models need a fully teardown for resetting Nvram. People who can't or don't dare opening their machines will have a nice time when No post - bootloop will be the end results of their tuning.
     
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  2. hmscott

    hmscott Notebook Nobel Laureate

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    Yeah, that's too bad, I know AW wasn't having a good year with their screen's getting EDID(?) messed up from various sources.

    XTU didn't kill any screens, but had been long term using / overwriting / clearing an area of the BIOS reserved for use that AW was taking over - pretty sure it was their mistake. I think XTU fixed that by moving to another region(?).

    So far in the almost 7 years I have been using XTU, started with the Xtreme Edition desktop CPU's, I haven't had any bugs that killed my laptop, boot looped, or otherwise was a problem other than backing up to a previous version when XTU messed up a release.

    I think the weirdest thing was there was a release of XTU that required installation As Administrator, but it only need it for one release version

    Then again, I'm not on Windows 10, all the Windows 7/8.1 bugs are long resolved, same for everything else, just Smooooth sailing all day long :D
     
    Last edited: Jul 17, 2017
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  3. Papusan

    Papusan BGA Filthy = That sucks!! STAHP! Dont buy FILTH...

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    You talk about the Voltage spiked(higher than normal?)... Aka same with the old microcode? Have other seen the same?
     
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  4. Vasudev

    Vasudev Notebook Virtuoso

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    1.1v on full load i.e 31x on 4 cores. Now it is using 0.95v. Dunno what caused it.
     
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  5. Robbo99999

    Robbo99999 Notebook Prophet

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    Voltage varies with the type of 100% load applied the CPU, for instance the latest version of Prime95 will kick the CPU up to it's highest voltage, whereas if you have your CPU at 100% load using other programs the voltage often doesn't climb as high - this is on desktop, so I guess the same as mobile. (Vcore as seen in HWInfo). So you'd have to compare the same type of load to draw conclusions on voltage.
     
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  6. Papusan

    Papusan BGA Filthy = That sucks!! STAHP! Dont buy FILTH...

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    Same load. 0.95v with the old microcode. And 1.1v with the new?
    Always save old data from your previous tests. Compare with same types clocks, settings, load and software. Or you will get wrong answers.
     
  7. Vasudev

    Vasudev Notebook Virtuoso

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    I will save some data from now on. One thing I noticed is that the ucode update isn't permanent, it simply gets loaded during OS startup. I booted up winPE and looked at revision code it was still at 9E instead of fixed ucode BA.
     
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  8. hmscott

    hmscott Notebook Nobel Laureate

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    Yup, it's a transient overlay at post time with the BIOS loaded ucode, and OS level it happens sometime during Windows startup.

    Linux should do it during the initial kernel loading - very early on - much earlier than Windows.
     
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  9. Vasudev

    Vasudev Notebook Virtuoso

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    Damn, did anyone notice this odd clock frequency bug. I'm scratching my head right now. I need more testing to do, eventually if I don't notice this bug on older ucode then maybe I need to take down the ucode link and the guide needs to be edited.
    odd_bug.PNG
     
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  10. Robbo99999

    Robbo99999 Notebook Prophet

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    I looked at this for a couple of minutes, what am I looking for?
     
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