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Windows operating systems use acpi.sys [28] to access ACPI events. The 2.4 series of the Linux kernel had only minimal support for ACPI, with better support implemented (and enabled by default) from kernel version 2.6.0 onwards. [29] Old ACPI BIOS implementations tend to be quite buggy, and consequently are not supported by later operating systems.
Advanced power management (APM) is a technical standard for power management developed by Intel and Microsoft and released in 1992 [1] which enables an operating system running an IBM-compatible personal computer to work with the BIOS (part of the computer's firmware) to achieve power management.
It can access standard ACPI tables such as PCI Memory Configuration Table (MCFG). SFI support was merged into Linux kernel 2.6.32-rc1; [1] the core SFI patch is about 1,000 lines of code. Linux is the first operating system with an SFI implementation. Linux kernel 5.6 marked SFI as obsolete. [2] SFI support was removed in Linux kernel 5.12. [3]
Consistent Network Device Naming is a convention for naming Ethernet adapters in Linux.. It was created around 2009 to replace the old ethX naming scheme that caused problems on multihomed machines because the network interface controllers (NICs) would be named based on the order in which they were found by the kernel as it booted.
Given the correct device tree, the same compiled kernel can support different hardware configurations within a wider architecture family. The Linux kernel for the ARC, ARM, C6x, H8/300, MicroBlaze, MIPS, NDS32, Nios II, OpenRISC, PowerPC, RISC-V, SuperH, and Xtensa architectures reads device tree information; on ARM, device trees have been mandatory for all new SoCs since 2012. [2]
A real time clock alarm is a feature that can be used to allow a computer to 'wake up' after shut down to execute tasks every day or on a certain day. It can sometimes be found in the 'Power Management' section of a motherboard's BIOS/UEFI setup.
ACPI 1.0 (1996) defines a way for a CPU to go to idle "C states", but defines no frequency-scaling system. ACPI 2.0 (2000) introduces a system of P states (power-performance states) that a processor can use to communicate its possible frequency–power settings to the OS. The operating system then sets the speed as needed by switching between ...
In July 2008 Linux developers discovered issues with ACPI tables on certain AMIBIOS BIOSes supplied by Foxconn, ASUS, and MSI. [34] The problem was related to the ACPI _OSI method, which is used by ACPI to determine the OS version (in case an ACPI patch only applies to one specific OS).