Unbunt 22.04 HP Probook 430 G8 輝度 Brihgtness

Unbuntu 22.04 HP Probook 430 G8 輝度 Brihgtness

Firmware Update

01.15.00 Rev.A

https://support.hp.com/jp-ja/drivers/swdetails/hp-probook-430-g8-notebook-pc/37973139/swItemId/ob-321879-1

https://support.hp.com/jp-ja/drivers/hp-probook-430-g8-notebook-pc/37973139

Update grub

$ sudo vi /etc/default/grub

# If you change this file, run 'update-grub' afterwards to update

# /boot/grub/grub.cfg.

# For full documentation of the options in this file, see:

#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0

GRUB_TIMEOUT_STYLE=hidden

GRUB_TIMEOUT=10

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

#GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=video acpi_osi=!!"

GRUB_CMDLINE_LINUX=""

$ sudo update-grub

$ sudo init 6

Operation

インジケーターの表示挙動が変だが連打すると少しずつ輝度が変化する.

The indicator display behavior seems unusual, but when pressed repeatedly, the brightness changes gradually.

Fn+F3/F4

Memo

acpi_backlight=video

ディスプレイの明るさ調整方法を指定し、ビデオドライバーに制御を委任

This parameter specifies the method for controlling the display brightness, delegating control to the video driver.

acpi_osi=!!

ACPIのOSインターフェイスを調整し、すべてのOSに対するACPI互換性を確保

This parameter adjusts the ACPI (Advanced Configuration and Power Interface) operating system interface, indicating compatibility with all OSes. This can be helpful in resolving ACPI-related issues.