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Two "Audio codecs" have 100% power usage in PowerTOP ...
https://unix.stackexchange.com/questions/106762/two-audio-codecs-have-100-power-usage-in-powertop-what-does-this-mean#:~:text=Go%20to%20the%20Tunables%20tab.%20There%2C%20one%20of,power%20consumption%20drops%20to%20a%20more%20bearable%20level
How to enable audio codec power saving - ThinkWiki
https://www.thinkwiki.org/wiki/How_to_enable_audio_codec_power_saving
Disable the entire sound device by unloading modules or, on older kernels, by # echo -n 3 > /sys/class/sound/controlC0/device/power/state (replace 3 by 0 to enable again). On-demand power control. 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 …
Porting custom audio codec in Linux BSP - Bits & Qubits
http://gopinaths.gitlab.io/post/audio_codec_in_linux/
To enable WM8960 audio codec driver support in IMX7, below defconfig values have to enabled. CONFIG_SND_SOC_WM8960=y CONFIG_SND_SOC_IMX_WM8960=y Useful commands. Below are the few useful commands while testing ALSA based audio codec in linux platform. To know the ALSA driver version
Dynamic Audio Power Management for Portable Devices …
https://www.kernel.org/doc/html/v5.16/sound/soc/dapm.html
Dynamic Audio Power Management (DAPM) is designed to allow portable Linux devices to use the minimum amount of power within the audio subsystem at all times. It is independent of other kernel PM and as such, can easily co-exist with the other PM systems.
ASoC Codec Class Driver — The Linux Kernel …
https://www.kernel.org/doc/html/v4.10/sound/soc/codec.html
The Dynamic Audio Power Management description describes the codec power components and their relationships and registers to the ASoC core. Please read dapm.txt for details of building the description. Please also see the examples in other codec drivers.
High battery consuming hardware "Audio codec ... - Arch Linux
https://bbs.archlinux.org/viewtopic.php?id=177401
Edit depending on your hardware and preferences. modlist="uvcvideo" # Bus list for runtime pm. Probably shouldn't touch this. buslist="usb i2c pci_express pci" if [ $bat0 == discharging ] || [ $bat1 == discharging ] then # Enable some power saving settings while on battery # Disable NMI watchdog echo 0 > /proc/sys/kernel/nmi_watchdog # Disable Wake-on-line …
Two "Audio codecs" have 100% power usage in PowerTOP ...
https://unix.stackexchange.com/questions/106762/two-audio-codecs-have-100-power-usage-in-powertop-what-does-this-mean
A single session fix that I found is as follows. Go to the Tunables tab. There, one of the options will be : Enable Audio codec power management with the value Bad. Press Enter to change it to Good, and watch as your power consumption drops to a more bearable level. But this fix has to be done every time you reboot.
How to enable audio codecs from the Fix it Program ...
https://answers.microsoft.com/en-us/windows/forum/all/how-to-enable-audio-codecs-from-the-fix-it-program/e6ee0e43-8c44-4e6a-b729-631d3f362e77
You may need to perform the following steps to re-enable the codecs. a. Click on Start, type regedit in the Search text box, and press Enter to start the Windows Registry Editor. b. Navigate to the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32.
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.
linux mint - How to disable the power saving for snd_hda ...
https://unix.stackexchange.com/questions/565886/how-to-disable-the-power-saving-for-snd-hda-codec-realtek
I'm on Linux Mint 19.3 (Kernel 5.3.0-28) and my mainboard comes with a Realtek ALC887 onboard chip (snd_hda_codec_realtek). Due to the default power managment the power saving state switches on and off on a regular basis, resulting in noticable "click" sounds when the codec gets switched back on to full power.
Screen flickering after using power management tools ...
https://bbs.archlinux.org/viewtopic.php?id=212447
WIFI_PWR_ON_AC=1 WIFI_PWR_ON_BAT=5 # Disable wake on LAN: Y/N WOL_DISABLE=Y # Enable audio power saving for Intel HDA, AC97 devices (timeout in secs). # A value of 0 disables, >=1 enables power save. SOUND_POWER_SAVE_ON_AC=0 SOUND_POWER_SAVE_ON_BAT=1 # Disable controller too (HDA only): Y/N …
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