Arch linux kde display settings

Arch Linux

kscreen is installed, but anyway options (like contrast, brigthness, etc. ) are missing in display settings. what I should do to fix this issue?

Last edited by sc6ut (2021-08-19 18:33:39)

#2 2021-08-18 15:00:41

Re: [SOLVED] kde missing options in display settings.

There is no contrast and brightness settings there that i know of, but you can install kgamma5 for gamma correction

Last edited by ugjka (2021-08-18 15:03:15)

https://ugjka.net
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pacman -S spotify-launcher
mount /dev/disk/by-.

#3 2021-08-18 15:07:48

Re: [SOLVED] kde missing options in display settings.

someone told me that there must be setting of «color correction» or something like that, but its missing, only gamma settings are present, BUT on wayland session even it is missing.

#4 2021-08-18 15:20:35

Re: [SOLVED] kde missing options in display settings.

https://ugjka.net
paru > yay | webcord > discord | you.com > google.com
pacman -S spotify-launcher
mount /dev/disk/by-.

#5 2021-08-18 15:53:48

Re: [SOLVED] kde missing options in display settings.

i have installed that one, got color correction tool, but got error «You need Gnome Color Management installed in order to calibrate devices», even when gnome-color-manager is installed on my laptop.

#6 2021-08-18 16:36:07

Re: [SOLVED] kde missing options in display settings.

I think brightness and color corrections are done more by the GPU than your compositor since your GPU talks directly to your monitor. If you have NVIDIA settings, you can calibrate them there. Not sure about ADM though as I’ve never used AMD.

#7 2021-08-18 16:51:21

Re: [SOLVED] kde missing options in display settings.

i have an intel gpu, you know what should i do to calibrate my monitor, because it’s too contrast?

#8 2021-08-18 16:53:00

Re: [SOLVED] kde missing options in display settings.

I think brightness and color corrections are done more by the GPU than your compositor since your GPU talks directly to your monitor. If you have NVIDIA settings, you can calibrate them there. Not sure about ADM though as I’ve never used AMD.

#9 2021-08-18 17:05:56

Re: [SOLVED] kde missing options in display settings.

Sorry for some reason my post posted twice.

have an intel gpu, you know what should i do to calibrate my monitor, because it’s too contrast?

Perhaps just do it via hardware, your monitor settings. It’s also the simplest.

#10 2021-08-18 17:08:05

Re: [SOLVED] kde missing options in display settings.

i have a laptop, so i cant do it via hardware, so i need a «software way».

#11 2021-08-18 17:12:58

Re: [SOLVED] kde missing options in display settings.

So the brightness key on your laptop doesn’t work as well?
I found this.

EDIT: It loos like udev could help.
You can also try xcalib, xgamma

Last edited by d_fajardo (2021-08-18 17:18:07)

#12 2021-08-18 17:17:29

Re: [SOLVED] kde missing options in display settings.

So the brightness key on your laptop doesn’t work as well?

i need to change my contrast, that’s the problem.

#13 2021-08-18 18:14:57

Re: [SOLVED] kde missing options in display settings.

EDIT: It loos like udev could help.
You can also try xcalib, xgamma

xcalib and xgamma are good tools, but they are not working on wayland session.

#14 2021-08-18 18:33:03

Re: [SOLVED] kde missing options in display settings.

https://ugjka.net
paru > yay | webcord > discord | you.com > google.com
pacman -S spotify-launcher
mount /dev/disk/by-.

#15 2021-08-18 18:58:02

Re: [SOLVED] kde missing options in display settings.

ah, understood, thank you.
anyway, do u know how fix that issue:

i have installed that one, got color correction tool, but got error «You need Gnome Color Management installed in order to calibrate devices», even when gnome-color-manager is installed on my laptop.

#16 2021-08-18 19:04:39

Re: [SOLVED] kde missing options in display settings.

It’s probably expecting that daemon to be prelaunched which e.g. gnome would do. But you won’t fix this on wayland regardless and on xorg the KDE built in kgamma should do the job

#17 2021-08-18 19:37:24

Re: [SOLVED] kde missing options in display settings.

Even on xorg session I can’t fix it? Gamma is a little bit different thing, my display is by default too contrasted, so I need to decrease it.

#18 2021-08-18 19:46:02

Re: [SOLVED] kde missing options in display settings.

Well as you’re on KDE, why not use KDE’s own kgamma5 to do it?

#19 2021-08-18 19:48:42

Re: [SOLVED] kde missing options in display settings.

Because it does not have contrast setting, it has only gamma settings, that’s why I’m searching for another tool.

#20 2021-08-19 18:33:27

Re: [SOLVED] kde missing options in display settings.

Never mind, I will use xcalib to adjust contrast. SOLVED.

Источник

How to Properly Install and Setup KDE Plasma on Arch Linux

I believe you followed the fantastic It’s FOSS guide on installing Arch Linux. The guide ends with steps mentioning the installation procedure for GNOME desktop.

Now, not everyone is a GNOME fan and several readers requested that we show them how to configure the KDE desktop on Arch Linux.

And thus I created this guide to demonstrate the steps for properly installing and configuring KDE desktop (also known as KDE Plasma desktop) on Arch Linux.

How to install and setup KDE desktop environment on Arch Linux

Please keep in mind that KDE doesn’t allow login as root directly. If you have installed Arch Linux and using it as root, you should create a new user and give it sudo rights for running commands as root.

If you just have a bare minimum installation of Arch Linux, you probably are logging into a TTY terminal. If you are using some other desktop environment, steps remain the same.

Step 1: Create a sudo user (if you have only root user)

You can use the useradd command for creating a new user. I am creating user named dimitrios (that’s my name). You can use something that matches your name.

The option -m creates a home directory for the newly created user.

You should also set a password for this user. Use this command:

Now that you have created the user, give it sudo access. First, install sudo and a command line text editor like nano:

The configuration file for sudo is /etc/sudoers. It should always be edited with the visudo command. visudo locks the sudoers file, saves edits to a temporary file, and checks that file’s grammar before copying it to /etc/sudoers.

To use nano as the visudo editor, use:

Add the following line like I do in the example, then save and exit.

Save your changes and exit the editor. You now have a sudo user on Arch Linux.

Step 2: Installing KDE Plasma desktop

To run KDE desktop, you need the following packages:

• Xorg group
• KDE Plasma Desktop Environment
• Wayland session for KDE Plasma
• KDE applications group (consists of KDE specific applications including the Dolphin manager and other useful apps)

You can install of the above using the following command:

pacman -S xorg plasma plasma-wayland-session kde-applications 

Once installed, enable the Display Manager and Network Manager services:

systemctl enable sddm.service systemctl enable NetworkManager.service

Almost there. Shutdown your system:

Power on your system and you should see the KDE login. Do you remember the password you set up for your sudo user? Use it to login.

What next?

You may want to explore the essential pacman commands, to know what’s going on with the Arch User Repository and learn more about AUR helpers.

I hope you found this tutorial helpful in installing KDE desktop on Arch Linux. Please let us know in the comments below, if you encountered any obstacle or difficulty during the installation.

What’s your favourite Desktop environment or Window Manager? Let us know and don’t forget to subscribe on our social media.

Источник