I use hidamari for live wallpaper. all the sudden i open my laptop to see the backround suddenly like this. Nothing work when trying to change a different wallpaper in either Hidamari nor Zorin appearance
gpu drivers seems kinda fine, but i feel as if there is an underlying issue related...
Are you using Wayland?
I can see in your screenshot that the Gnome Panel is also green - and that is Compositor level. Hidamari would not affect the shell panel.
i logged out to make sure. But it seems im not running on wayland.
Just the usual "Zorin on desktop" option
That could be either Xorg or Wayland.
What are the two given options?
I think its Xorg, the other options being:-
Ubuntu on desktop
Ubuntu on Wayland
Zorin on Desktop (logged in)
Zorin on Wayland
Ok so Xorg - and which kernel?
uname -r
I notice you are on the 535 driver but using a 3070 card... First thing I would try is the 580 driver, but do not use the Jockey program in Software & Updates.
Instead, use terminal, since Jockey fails to remove all residuals when switching drivers.
It may be a kernel conflict with the 535 driver...
First, full clean:
sudo apt remove --purge '^nvidia-.*' '^libnvidia-.*'
Install:
sudo apt update && sudo apt install nvidia-driver-580 nvidia-dkms-580
Once that is done, run:
sudo apt full-upgrade
to ensure Mesa and everything is updated.
Then full cycle reboot the computer and see if you do not see a sea of green.
since i've been mindlessly updating time to time not knowing what it would do, it might be that it switched a new kernel which explains the weird startups lately to the point of not booting.
but oh dear, changing my drivers? 535 has been the only driver thats been the most stable and smooth running since the first day of using zorin. i think i changed into 545,555,565 and they all results in catastrophe that leaves me traumatised. I know im whining but risking probably a lot of trouble for the sake of backround is...well.
for now i would try to switch to a previous kernel and see what that does
You can try that too, from the Grub Menu - Advanced Options for Zorin - then select the previous kernel to boot from.
I am on RTX3060 and I feel your pain. 55 and 560, 565 were evil.
But 580 has been stable and good so far.
reverted back to 6.5.0-17 generic from (i think it was) 6.8.... solved the issue
think I'll be graduating my university diploma before the new kernel (and driver) becomes stable for me to use.
Thanks as always 
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