Since I discovered endeavouros I have never used another distro and have removed Windows from almost all my PCs!
Also I have never had any problems!
I have a pc (Samsung r519 fa04) where I decided to install endeavouros!
In this case I have only two small problems:
Brightness reset on boot always
Bright news and the colour slightly pale!
The first problem I can solve with xbacklight; the second with redshift!
But I wanted to ask if installing some particular driver (Libva Intel driver, vulkan Intel or intel media driver) could solve it?
Also, following the arch wiki, I canāt solve it by changing the kernel parameters or editing the file in etc/X11/xorg.conf.d/20-intel.conf.
Iām asking if I can do something for the pc in question (without having to use external programs like xbacklight and redshift)?
inxi -G
Graphics: Device-1: Intel Mobile 4 Series Integrated Graphics driver: i915 v: kernelX.Org 1.21.1.1 driver: loaded: Intel: unloaded:modesetting
vinzv
December 14, 2021, 4:26pm
3
For things like display backlight itās necessary to have the ACPI features being accessible for the kernel. And if neither the vendor provides them nor someone is keen enough to reverse engineer them youāre out of luck, I fear.
Personally, Iād consider xbacklight and redshift viable solutions. Is there anything not working for you with them?
Thereās a systemd service that saves the backlight brightness. There may be several available depending on your hardware, you find out which are available using e.g.
systemctl list-units | grep backlight
Then, you can check on the status of that service, e.g.
systemctl status systemd-backlight@backlight:acpi_video0.service
This may give some information about whether the service is active or failing.
Next, there are various methods of setting the backlight, and therefore several kernel options to try. Some can work better than others:
https://wiki.archlinux.org/title/Backlight#Kernel_command-line_options
You can try each one in turn to see if it helps.
manuel
December 14, 2021, 5:04pm
5
Do you have package xf86-video-intel installed?
Looks like it:
So definitely worth trying without.
systemctl list-units | grep backlight
systemctl status systemd-backlight@backlight:acpi_video0.service
systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0ā¦
yes, i have installed the package : xf86-video-intel
in relation to this: driver: loaded: Intel: unloaded:modesetting how i can āworth trying withoutā?
p.s I can turn down the brightness but it resets when I boot up.
with xbacklight and redshift I can solve but I wanted to know if I could with kernel modifications
also i tried the solutions of the arch wiki but without solving
acpi_backlight=video
not working
1 Like
There are two enabled services here, both trying to do the same thing.
So, option 1 is to remove xf86-video-intel (and reboot) and see if the modesetting driver works better (for many people itās the better choice).
Option 2 is to mask one or the other backlight service (if one doesnāt work, unmask it and mask the other), e.g.:
sudo systemctl mask systemd-backlight@backlight:acpi_video0.service
Reboot and test,
sudo systemctl unmask systemd-backlight@backlight:acpi_video0.service
sudo systemctl mask systemd-backlight@backlight:intel_backlight.service
You should also read this wiki page to understand what each of these things mean:
https://wiki.archlinux.org/title/Backlight
Donāt simply copy-paste and expect the steps to work!
2 Likes
I tried them all and none of them worked!
I will continue with xbacklight and redshift