I'm fairly new to Linux, excuse me if I'm missing something obvious.
Until recently, I used a GTX 750TI for my Server (Ubuntu 20.4 LTS), but then a friend of mine needed a GPU. I took the GPU out, since I still have the integrated graphics from Intel (i7 6700), which should have been more than enough for a headless server.
When I restarted the Server, I only got a black screen after login via XRDP. I connected the Server to a screen and noticed that I'm using LLVMPIPE instead of the HD630. I searched for many fixes online, and tried this one:
https://www.computersnyou.com/4945/re-install-xorg-xserver-completely-ubuntu/
I followed these steps and then rebooted my system:
sudo apt-get purge xorg "xserver-*"
sudo apt-get purge lightdm plymouth
sudo rm -rf /etc/X11/xorg
sudo apt-get autoremove
Now I'm stuck in some kind of grey screen with different colors after the BIOS screen. I tried rebooting, unplugging the power... but that obviously didn't help.
The Problem is definitely caused by me uninstalling XORG, but I have no idea how I should install it now since I can't access the console.
Where should I go from here?