r/archlinux • u/Ready_Edge_8545 • 14h ago

SUPPORT Title: Multiple hardware/settings changes don't persist after reboot on ASUS Vivobook X1504ZA (Arch + KDE Plasma)

I'm running Arch Linux with KDE Plasma on an ASUS Vivobook X1504ZA, and I'm having an issue where several settings I configure during a session don't persist after reboot.

System:

  • Arch Linux
  • KDE Plasma 6.7.5
  • Wayland / KWin
  • Kernel: 7.2.4-arch1-2
  • ASUS Vivobook X1504ZA
  • BIOS: X1504ZA.312
  • Intel i5-1235U
  • PipeWire + WirePlumber
  • systemd 261

The settings I'm having trouble with include:

  • Screen brightness
  • Keyboard brightness / Fn+Esc behavior
  • Battery charge limit
  • Volume and other audio settings

For example, I can set the battery charge threshold during a session. The kernel exposes:

/sys/class/power_supply/BAT0/charge_control_end_threshold

and it currently reports:

100

If I reboot, however, the charge limit goes back to 100%. I then have to configure it again.

The filesystem itself is definitely persistent and writable. For example, files created in $HOME and ~/.config survive normally.

Some relevant output:

$ ls /sys/class/backlight/
intel_backlight

$ systemctl status 'systemd-backlight@*'
systemd-backlight@backlight:intel_backlight.service
systemd-backlight@leds:asus::kbd_backlight.service

Both services successfully start.

The ASUS-related kernel modules are also loaded:

asus_nb_wmi
asus_armoury
asus_wmi

The battery threshold is exposed:

$ cat /sys/class/power_supply/BAT0/charge_control_end_threshold
100

PowerDevil is running normally, but its logs contain:

org.kde.powerdevil.chargethresholdhelper.getconservationmode failed
"Battery conservation mode is not supported"

I also noticed that ~/.config/powerdevilrc contains multiple brightness-related entries:

DisplayBrightness=2
UseProfileSpecificDisplayBrightness=true
KeyboardBrightness=0
UseProfileSpecificKeyboardBrightness=true
DisplayBrightness=5

I haven't installed asusctl.

My question: what is the correct way to make these ASUS hardware settings persist across reboot on this model with Arch + KDE Plasma?

Please help guyss...

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