Linux Might Need To Claim Only ACPI 2.0 Support For BIOS

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.

Comments

Re:SJW is the new Godwin

[DNS-and-BIND]

I love the way that SJW stings you because it's accurate. Thus you try to get rid of it by equating it to Godwin's Law and thus out of bounds for discussion. That's so SJW it hurts.

There's also the delicious irony that you compared SJWs to Nazis without consciously meaning to do so. I think the term for that is "psychological projection".