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Audio subsystem power management for modern standby ...
https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/audio-subsystem-power-management-for-modern-standby-platforms#:~:text=The%20audio%20subsystem%20must%20support%20the%20following%20two,audio%20subsystem%20components%20consume%20less%20than%20one%20milliwatt.
How to enable audio codec power saving - ThinkWiki
https://www.thinkwiki.org/wiki/How_to_enable_audio_codec_power_saving
On-demand power control lets the kernel switch off parts of the audio codec and audio bus that are not in use at the moment. However, this can cause noticeable "click" sounds when enabling/disabling parts of the codec. AC97 audio subsystem. There's an experimental patch from 2.6.19-rc2, that was later corrected in 2.6.19-rc3, which enables the ...
4.2. Example — Laptop Red Hat Enterprise Linux 6 | Red Hat ...
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/power_management_guide/example_laptop
echo 0 > /proc/sys/kernel/nmi_watchdog. enable AC97 audio power-saving (enabled by default in Red Hat Enterprise Linux 6): echo Y > /sys/module/snd_ac97_codec/parameters/power_save. enable multi-core power-saving (part of the laptop-battery-powersave profile): echo 1 > /sys/devices/system/cpu/sched_mc_power_savings.
HD-Audio Codec-Specific Models — The Linux Kernel ...
https://www.kernel.org/doc/html/v5.16-rc8/sound/hd-audio/models.html
laptop-amic. Laptops with analog-mic input. laptop-dmic. Laptops with digital-mic input. alc269-dmic. Enable ALC269(VA) digital mic workaround. alc271-dmic. Enable ALC271X digital mic workaround. inv-dmic. Inverted internal mic workaround. headset-mic. Indicates a combined headset (headphone+mic) jack. headset-mode. More comprehensive headset support for …
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