I recently found that whenever my Audio System is initialized by starting Apps like Ardour or even pavucontrol the remaining battery life immediatly heavy drops from e.g. 20 to 5 hours…?
That seems way to much to me.
I tried different kernels, switched from pulse to pipewire, but the issue persists.
HTOP showing 0% CPU usage. I use an external Monitor on HDMI. USB Hub and USB Keyboard and Mouse…not really power consuming.
The laptop/hardware is quiet new (released May 2023). Maybe the hardware is not yet fully supported in Linux?
Battery life in ‘remaining hours’ has nothing to do with real battery status, which would be Wh or mAh if you want. So, either the first (20 h) or the second (5 h) is simply a wrong prognosis about it, if your CPU usage (or GPU usage, or energy usage of any other devices) has not increased.
The capacity did not change immediatly, but discharging is faster, even if I run pavucontrol. And I have to correct me…HTOP showing higher CPU usage. Normally 1% battery lasts for about 10 Minutes. If I run pavucontrol than maybe for 3 Minutes.
No Browser running. Just checked the issue with different Live Distros (Linux Mint, Linux Mint Debian, Cachy OS) Same issue everywhere. As soon as starting/initializing Sound System (Pavucontrol, Ardour, Audacity) battery life heavy drops/drains, discharging up to 75 % faster.
Checked with my old Acer Laptop with 4 Core Intel Celeron CPU.
No such issue with Ardour, or Audacity. Battery % remains constant. No heavy drain.
Though pavucontrol causes 25% CPU usage.
So it seems hardware related to AMD APU. So maybe this ASUS Laptop is too new for Linux, or some kind of hardware fault…No Windows OS here, so I could check there.
And I cant remember if this issue was there from beginning or came with an update.
PulseAudio has module-suspend-on-idle that suspends idle sinks and sources after a predetermined time (default = 8 seconds) to save power
But if pavucontrol is open, devices are not considered idle and are not suspended
Unused sinks and sources can be suspended (or set card Profile to ‘off’) to improve battery life
Internal speakers usually need more power from system than headphones or externally powered speakers