So...
I tried to install DaVinci Resolve 21.0 and ran into issues with the program ("Unsupported GPU Processing Mode"). I attempted to install an AMD driver that supported the program (I used to use Resolve on Windows on the same computer, so I know it CAN function). Weirdly enough, it somehow... broke my graphics drivers.
Now I am unable to change the configuration of my second and third monitors (cannot make changes due to hardware limitations, even though I was able to make the changes before all of this). On top of this, when booting my computer, after the Dell and Zorin logos appear, it briefly runs a terminal and then launches. After I login, the screen goes back into an empty screen and I have to either restart or put my computer to sleep and log back in to get it to actually load my display.
I have attempted to uninstall the AMD drivers. I have attempted to roll back to the base drivers. I have attempted to go to the Additional Drivers page on the Updates, but there is nothing listed (I am running integrated graphics, Intel Xe Max, had no issues with DaVinci Resolve on Windows or graphics issues before this). When I run nvidi-smi in the terminal, it says it cannot communicate because I am missing the nvidia drivers (even though I had functioning nvidia drivers before this). I have attempted to run a previous kernal. Nothing changes.
What did I do?? How can I fix it?? How do I get the drivers back to default if the amdgpu uninstall commands don't work? Thank you 
Mind you, when I say that I attempted to download an AMD driver that functioned with Resolve, I followed other threads that gave guides on how to get it to function. that's when I started having issues with my monitors not configuring. I tried to roll back what I did to fix it, and now I'm just having all these issues. 
Hi and welcome.
Can we be clear on what graphics hardware you have and whether you are using a Dell desktop or a Dell notebook?
Please open a terminal (just enter terminal in search bar) and enter:
inxi -G
and post back the results please.
Welcome to the Forum!
DaVinci Resolve on Linux is a bit a Pain unfortunately. So, alone this could lead to this Issue. But what I don't quite understand now is Your Graphics Card Setup. First, You wrote about AMD Graphics but then You talk about Nvidia Drivers.
I am using a Dell Laptop. (Inspiron 7506 2n1)
Graphics:
Device-1: Intel TigerLake-LP GT2 [Iris Xe Graphics] driver: i915 v: kernel
Device-2: Intel DG1 [Iris Xe MAX Graphics] driver: i915 v: kernel
Device-3: Realtek Integrated_Webcam_HD driver: uvcvideo type: USB
Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X:
loaded: modesetting unloaded: fbdev,vesa dri: swrast gpu: i915 resolution:
1: 1360x768~60Hz 2: 1360x768~60Hz 3: 3840x2160~60Hz
API: EGL v: 1.5 drivers: kms_swrast,swrast
platforms: gbm,x11,surfaceless,device
API: OpenGL v: 4.5 vendor: mesa v: 26.0.3 renderer: llvmpipe (LLVM 22.1.0
256 bits)
API: Vulkan v: 1.3.275 drivers: N/A surfaces: xcb,xlib
Hi. So looking at what you posted you neither have an nvidia or AMD GPU but an Intel Graphics Chipset.
So I am wondering if you were trying some workarounds, as given here (I used Brave search engine via Mojeek and used Ubuntu 24.04 in search criteria as that is what Zorin 18 is based on) and the first result is alwayss A.I. generated:
" DaVinci Resolve does not natively support Intel Iris Xe graphics for hardware-accelerated processing on Linux, which is why it fails or shows "Unsupported GPU processing mode" on your Dell Inspiron. The official Linux installer is built for Rocky Linux and requires NVIDIA CUDA drivers to function correctly; Intel OpenCL support is unstable and often causes image corruption or crashes.
To get DaVinci Resolve working on Ubuntu 24.04 with your current hardware, you must follow these critical workarounds:
-
Install NVIDIA Drivers : Even without a dedicated GPU, Resolve's Linux installer often checks for CUDA. Install the nvidia-driver-550 (or newer) via sudo apt install nvidia-driver-550 and reboot.
-
Fix Missing Libraries : The Ubuntu installer often fails due to missing dependencies. Extract the .run file, edit AppRun to skip package checks (SKIP_PACKAGE_CHECK=1 ), and manually symlink missing libraries like libapr1 and libasound2 .
-
Use Distrobox/Docker : The most stable method on Fedora/Ubuntu is running Resolve in a RHEL 9 or Ubuntu 22.04 container via Distrobox, as the native Ubuntu 24.04 packages are frequently broken.
-
Disable GPU Acceleration : If you can get it to launch, go to Preferences > Memory and GPU and uncheck "GPU Processing Mode." This forces CPU-only rendering, which will work with Iris Xe but will be extremely slow for 4K or complex edits.
Conclusion : You cannot achieve smooth performance on Iris Xe. For light 1080p editing, you can force it to run via CPU-only mode or Distrobox , but expect significant lag. A dedicated GPU (NVIDIA/AMD) is officially required for viable performance.
AI-generated answer. Please verify critical facts."
Here isn't anything about Nvidia or AMD Graphics, only Intel. Why did You tried Nvidia and AMD Graphics?
Well I hate saying this would most likely be more favorable and less stressfull to just reinstall Zorin at this point maybe even faster as well.. and chalk it up to a learning experence. In future would be a good idea the have timeshift installed and make a snapshot of your current system so if things go wrong you can shift back to where you were...... 
Aye..... yeah. I consider myself somewhat tech savvy, but clearly not quite enough yet. Always more to learn... I'm just going to use a different video editing software in the future. Hopefully reinstalling my modded games doesn't take as much work and stress this time around 
lesson learned try to get rescuezilla as well and make a clone of your system as well way easier that way call it "planB"
I can highly recommend KDEnlive which is what I use, or you could look at OBS studio. I am not on Zorin, I am using a distro with Plasma DE.
It might be old to what is currently available, but it works for me. Use it for editing screen capture, and for that I use simplescreenrecorder.
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Checkout what my Brave A.I. result found - it suggests installing nvidia drivers even though no nvidia graphics are present, because the Linux version of DaVinci Resolve looks for CUDA during installation.
And how should that help when no Nvidia Card is there?
Installing Nvidia drivers will not help without Nvidia hardware; at best it adds another variable. The useful clue in the inxi output is renderer: llvmpipe, which usually means Mesa/i915 is not being used for acceleration. Before reinstalling, I would remove the extra AMD/Nvidia packages you added, then boot the previous kernel from GRUB once and check glxinfo -B or inxi -G again. If it still says llvmpipe after the cleanup, reinstall is probably the faster fix.
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