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Linux Might Need To Claim Only ACPI 2.0 Support For BIOS

Posted by timothy on from the and-you-can-taqiya-that-to-the-bank dept.

jones_supa writes Some of us remember the story of why Linux kernel responds "False" when ACPI BIOS asks if the operating system is Linux. We have found yet another case where mimicking the Windows behavior instead of writing to the spec is the right choice if you just want your machine to work properly. The ACPI spec defines the _REV object as evaluating to the revision of the ACPI specification that the OS implements. Linux returns 5 for this, because Linux actually tries to implement ACPI 5.0, but Windows returns 2 (ACPI 2.0), possibly due to legacy reasons. Linux kernel expert Matthew Garrett discovered that still a fair amount of brokenness appears when 5 is returned as the revision, including a Dell machine which left the sound hardware in a misconfigured state. He is proposing a kernel patch which simply reports _REV as 2 on all x86 hardware.

6 of 129 comments (clear)

  1. Matthew Garret, the SJW fuck? by Anonymous Coward · · Score: -1, Troll

    I though he quit contributing to linux because women's rights!

    1. Re:Matthew Garret, the SJW fuck? by Anonymous Coward · · Score: -1, Troll

      Well, you saw that behavioral policy linus committed to the docs directory, right?

      https://git.kernel.org/cgit/li...

      The sjws have been placated, but as we know, enough is never enough for them.

  2. This is so Republican by greenwow · · Score: -1, Troll

    Their kind shits on the truth and lies lies lies. They lie to promote and help their kind and their ways. That is what they do. They even often lie when it just doesn't matter. They just lie for fun. Now Linus wants every Linux user to lie. That is what this is about. He wants to turn us into liars where lying as a daily thing we do for fun becomes normal. This Republican-created crap has destroyed this country and is infecting the world. For them, it's all about the lies.

    No, we should tell the truth. If we are better than Windows, then we should tell the truth. This demand we lie and say we're down at their level is morally wrong.

  3. SJW is the new Godwin by ArchieBunker · · Score: -1, Troll

    I propose a new rule similar to Godwin's rule about the first to mention the word "Nazi" loses the argument. From this day forward anyone using the term "SJW" shall automatically lose any discussion, argument, or shouting match.

    --
    Only the State obtains its revenue by coercion. - Murray Rothbard
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