I've just grabbed the numlockx binary manually from the pacman mirror, and moved in /usr/bin/
And it's working

Here is the numlockx package archive : http://mirrors.evowise.com/archlinux/community/os/x86_64/numlockx-1.2-4-x86_64.pkg.tar.

Open the archive, the binary is in /usr/bin/numlockx

Extract it somewhere and

chmod +x numlockx
sudo mv numlockx /usr/bin/

    Or you can just compile it from source :

    git clone https://github.com/rg3/numlockx
cd numlockx/
./configure
make
sudo make install

      IAMISSAM That link does not work.However I downloaded numlockx from AUR and followed your steps.But numlock did not turn on during boot.As you show in the terminal screenshot it can only turn on or off from terminal.

          Justin No.Its turned on already.

          #greeter-wrapper=
          #guest-wrapper=
          #display-setup-script=
          #display-stopped-script=
          greeter-setup-script=/usr/bin/numlockx on
          #session-setup-script=
          #session-cleanup-script=
          #autologin-guest=false
          #autologin-user=

              Not sure on this one then. I've always set Num lock on boot via motherboard, but haven't had an issue with it for many years.

              well that simply is not a solution for everyone, as NumLock in BIOS or EFI, doesn't exist for everyone, me included .... on Plasma i just add a line to sddm.conf and numlock boots on boot without any additional packages ... everyone suggests numlockx for lightdm, yet it doesn't work on Solus, like some other core apps that i need...

                Have you made package requests for the apps you need?

                7 days later

                KronikPillow this is how i enabled numlock on boot:
                Download numlockx from here https://www.archlinux.org/packages/community/x86_64/numlockx/
                Extract and place numlockx bin into /usr/bin
                Edit /usr/share/lightdm/lightdm.conf.d/10_solus_default.conf 

                [Seat:*]
greeter-setup-script=/usr/bin/numlockx on
                  a year later

                  I managed to download the file.
                  How do I extract it ?
                  numlockx-1.2-5-x86_64.pkg.tar.zst

                    17 days later

                    bichler
                    you're going to want to get zstd
                    sudo eopkg it zstd
                    then
                    zstd -d numlockx-1.2-5-x86_64.pkg.tar.zst
                    don't forget to symlink the binary to your /usr/bin folder.
                    Also while this thread contains valuble info it is a year old and lightdm configs are no longer located in /etc/lightdm/
                    to find your config files run
                    lightdm --show-config
                    and add
                    greeter-setup-script=/usr/bin/numlockx on on the slick-greeter conf under the [Seat:*]

                      2 months later

                      kyrios Unless you have an old machine, the preferred method should be to set it from the computer's firmware (UEFI or BIOS).

                      Hello,

                      I am a beginner with Linux and use the current Solus version 4.1.

                      But I couldn't find an option in the settings for my old computer (9 years old).

                      Can you add it for the next version, then the end user can activate it in the graphical user interface?

                      Thanks.

                        6 months later

                        Not everyone has a BIOS that offers the option of setting the Num Lock key. Having read this entire thread, it seems unreasonable that the user should have to jump through all these hoops! This should NOT be so hard to do in Solus! Why not make it an option in the Keyboard options when you go into Control Center?

                        I just did this using this tutorial:

                        TO WHOM THIS CONCERNS:
                        You need a c compiler like gcc and the libxi-devel pakage
                        Also, if you dont have the devel files run: sudo eopkg it -c system.devel

                        install numlockx from https://github.com/rg3/numlockx
                        unzip the package
                        enter into terminal this: cd /home/(your username)/Downloads/numlockx-master
                        enter ./configure
                        enter sudo make
                        enter sudo make install
                        enter sudo make xsetup (if that gets you errors its fine)
                        enter sudo make xinitrc
                        enter sudo lightdm-settings
                        then go to Settings -> turn on Activate numlock

                          joemartin Thank you for this solution. I am running Solus 4.1 MATE and it worked. However, I had to make some modifications to what you wrote. If you download and extract the numlockx file (a tar.gz file) from the github URL you gave, and place it in your Downloads folder, then when you extract it there, it creates a folder named numlockx-1.2, NOT numlock-master. So, you must cd to numlockx-1.2.
                          Then, all the steps worked, EXCEPT the last two: sudo lightdm-settings does not work, it comes back with the message "command not found". Also, you do not need to "go to Settings ->turn on Activate numlock"; in fact, I could not even understand what this means, what Settings are you talking about? But the good news is, the Num Lock now turns on automatically once I have signed on at the login screen. So, it is not on when you login with your password, but it is automatically on after that (if you enter the correct password, of course). Also, since numlockx is now installed, you can go to terminal, and type numlockx ? to see the options. They are on, off, and toggle; and on is the default.
                          I still think Solus should just make this an option on Keyboard settings, to avoid all this extra hassle.

                            Glad it worked.

                            Install lightdm-settings from package manager, launch it, then settings tab and activate numlock from there.

                            No tweaking needed on my install. Tutorial was perfect.