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Thread: Linux 3.5 Kernel Power Regression Spotted

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  1. #1
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    Default Linux 3.5 Kernel Power Regression Spotted

    Phoronix: Linux 3.5 Kernel Power Regression Spotted

    Following yesterday's news of a massive power regression within the Linux 3.5 kernel, James Bottomley has uncovered the kernel commit causing excessive power usage...

    http://www.phoronix.com/vr.php?view=MTE1MTI

  2. #2
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    I don't understand a word he said, but as a Sandy Bridge notebook user, I say

  3. #3
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    So, this is only affecting those Intel products ?!?
    Last edited by AJSB; 07-31-2012 at 09:44 PM.

  4. #4
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    hah well that was a quick spot, also kinda stupid to get everyone hyped-up about it when it only affects 1 crappy chipset

  5. #5
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    Perhaps the logic within the commit has a bug that ends up burning power due to bad side interactions so hopefully it'll get reworked

  6. #6
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    Good to see a quick return on issues like these.

  7. #7
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    Quote Originally Posted by AJSB View Post
    So, this is only affecting those Intel products ?!?
    This time it's not a vague BIOS issue but an Intel graphics driver problem indeed. And it is clear what causes it. So I think it'll be fixed or reverted in Ubuntu 12.10 at least.

  8. #8
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    I've been holding back, staying on kernel 3.4, rather than upgrading to 3.5.3 in the opensuse12.1/tumbleweed repository

    any news on a fix? I had a look at commit logs but saw nothing obvious :-(

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