threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
33 lines
1.5 KiB
Plaintext
33 lines
1.5 KiB
Plaintext
APM or ACPI?
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------------
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If you have a relatively recent x86 mobile, desktop, or server system,
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odds are it supports either Advanced Power Management (APM) or
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Advanced Configuration and Power Interface (ACPI). ACPI is the newer
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of the two technologies and puts power management in the hands of the
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operating system, allowing for more intelligent power management than
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is possible with BIOS controlled APM.
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The best way to determine which, if either, your system supports is to
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build a kernel with both ACPI and APM enabled (as of 2.3.x ACPI is
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enabled by default). If a working ACPI implementation is found, the
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ACPI driver will override and disable APM, otherwise the APM driver
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will be used.
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No, sorry, you cannot have both ACPI and APM enabled and running at
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once. Some people with broken ACPI or broken APM implementations
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would like to use both to get a full set of working features, but you
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simply cannot mix and match the two. Only one power management
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interface can be in control of the machine at once. Think about it..
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User-space Daemons
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------------------
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Both APM and ACPI rely on user-space daemons, apmd and acpid
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respectively, to be completely functional. Obtain both of these
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daemons from your Linux distribution or from the Internet (see below)
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and be sure that they are started sometime in the system boot process.
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Go ahead and start both. If ACPI or APM is not available on your
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system the associated daemon will exit gracefully.
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apmd: http://ftp.debian.org/pool/main/a/apmd/
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acpid: http://acpid.sf.net/
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