You are not logged in.
When the laptop is unplugged, the backlight brightness will reduce to 4.
And I have to execute
echo 60 > /sys/class/backlight/amdgpu_bl0/brightness
OS: Linux ArchLinux 5.19.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Sun, 21 Aug 2022 18:55:22 +0000 x86_64 GNU/Linux
WM: dwm
● systemd-backlight@backlight:acpi_video0.service - Load/Save Screen Backlight Brightness of backlight:acpi_video0
Loaded: loaded (/usr/lib/systemd/system/systemd-backlight@.service; static)
Active: active (exited) since Fri 2022-08-26 16:47:08 CST; 25min ago
Docs: man:systemd-backlight@.service(8)
Process: 582 ExecStart=/usr/lib/systemd/systemd-backlight load backlight:acpi_video0 (code=exited, status=0/SUCC>
Main PID: 582 (code=exited, status=0/SUCCESS)
CPU: 2ms
● systemd-backlight@backlight:amdgpu_bl0.service - Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0
Loaded: loaded (/usr/lib/systemd/system/systemd-backlight@.service; static)
Active: active (exited) since Fri 2022-08-26 16:47:08 CST; 25min ago
Docs: man:systemd-backlight@.service(8)
Process: 583 ExecStart=/usr/lib/systemd/systemd-backlight load backlight:amdgpu_bl0 (code=exited, status=0/SUCCE>
Main PID: 583 (code=exited, status=0/SUCCESS)
CPU: 3ms
Offline
Is there a question in there? I assume you are asking why does the brightness change.
What desktop environment are you using? Gnome? Plasma?
Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way
Offline
Is there a question in there? I assume you are asking why does the brightness change.
What desktop environment are you using? Gnome? Plasma?
Hello. I don't use the DE. I am using the Windows Manager dwm.
Then, I want to keep the brightness the same after unplugging, or change the brightness to 40.
Last edited by mistgc (2022-08-26 15:15:41)
Offline