Monitors don't save Resolution after relogin

[BesterNameYT]

Hey everyone,

I Recently switched to Linux and Started trying out I3 on my Notebook without problems. After using it on my PC though I ran into a Annoying Problem. When using I3, both of my Monitor's Resolutions keep resetting to 800p.
I have made a xrandr command which sets up both my Monitors Correctly, besides the fact that my 2nd Monitor stays at 24hz, which I still don't know why.
xrandr --output HDMI-A-1 --primary --mode 1920x1200 --rate 59.95 --output HDMI-A-0 --mode 1920x1080 --rate 59.95 --above HDMI-A-1
I have tried adding the command to my /etc/X11/xinit/xinitrc file with no result. I also looked around in various other Threads from Different Forums where I either get told to Edit a Config file that I don't have or where the Change doesn't help.
I'm really at my wits end with this, I have been looking for a Solution the Entire Afternoon with no Result.

This is my First time Using Linux outside of my Steam Deck so I'm not Familiar with any configs/settings, the Above mentioned Command already took me 30 Minutes to get working.

Any help would be gladly appreciated.

[orestisfl]

I would take a look at https://wiki.archlinux.org/title/multihead#Configuration_using_xorg.conf for xorg configuration and https://wiki.archlinux.org/title/Xrandr#Adding_undetected_resolutions for your refresh rate issue.

autorandr is another alternative for automating monitor setups.

This might be an issue with drivers. What kind of GPU do you use and which driver package?

[BesterNameYT]

I tried autorandr and It sadly didn't work. Neither did the Adding undetected resolution
leander@leander:~$ xrandr --addmode HDMI-A-1 1920x1200_60.00 leander@leander:~$ xrandr --output HDMI-A-1 1920x1200_60.00 xrandr: unrecognized option '1920x1200_60.00' Try 'xrandr --help' for more information.
As to the xorg.conf stuff. I don't have that file, the only file in that Folder is a Keyboard config.
And I don't know if it matters but I'm using KDE Neon, since the Tutorials were on the Arch Forum.

[orestisfl]

xrandr --output HDMI-A-1 1920x1200_60.00

You forgot --mode

As to the xorg.conf stuff. I don't have that file

Yes, you create the files from scratch.

And I don't know if it matters but I'm using KDE Neon, since the Tutorials were on the Arch Forum.

Xorg is around for a while so usually it doesn't matter

[BesterNameYT]

my monitor config should now look like this

Section "Monitor"
  Identifier "HDMI-A-1"
  Modeline "1920x1200_60.00"  193.25  1920 2056 2256 2592  1200 1203 1209 1245 -hsync +vsync
  Option "PreferredMode" "1920x1200_60.00"
  Option "Below" "DP"
  Option "Primary" "true"
  Option "DPMS" "true"
EndSection

Section "Monitor"
  Identifier "HDMI-A-0"
  Modeline "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
  Option "PreferredMode" "1920x1080_60.00"
  Option "Above" "DVI"
  Option "DPMS" "true"
EndSection

Problem is, it won't save. I save the file via Kate but when I reopen it it's gone.
I also used X11 to get the Monitor names this time since they had a Different name in Wayland, dunno if that will help.
EDIT: Switching to X11 also got the whole xrandr stuff to work, so I think it helped.

[BesterNameYT]

Okay so my Top monitor now works fine (HDMI-A-0) but my Main and Bottom Monitor (HDMI-A-1) is pitch black.