Hello all,
My name is Juri and i'm new on Zorin Os and Zorin forum
I had Zorin OS from about a week, i really like it and is not so hard to use (i'm an ex windows user)
it worked all almost out of the box until i noticed the NVIDIA driver in use was the 570, and there is the 580 tested driver available, so i decided to install it.
after reboot, the audio do not work anymore "dummy output issue"
i followed lots of tutorial and solutions here in the forum and in the help center, none worked for me.
tried the help of AI, and after almost a day of trying solutions it recommended to use an updated kernel 
i noticed in the about section of settings the graphic card is "llvmpipe (LLVM 15.0.7 256 bits)" and not nvidia, why?
Welcome to the Forum!
Because You have a Nvidia Card, my first Question is: Does Your System run in Wayland or X11? You can check that in Settings>About. when it runs in Wayland, I would recommend first, to switch to X11/Xorg.
To do that, go to the Login Screen, not the Lock Screen. Simply reboot for that. On the Login Screen, click on Your Profile so that the Password Field appears. When it is appeared, You should see in the bottom right Corner a Gear Icon. Click on it and choose the Option ''Zorin Desktop on Xorg'' and then log in.
It would be good to know what You all have tried and what Nvidia Graphic to You have to be more precise.
As a common Suggestion, I can only give You the Uninstallation of Your current Nvidia Driver if there should be one and then Installation of the 580 Driver.
First uninstall existing Nvidia Drivers:
sudo apt purge nvidia*
and then:
sudo apt autoremove
to remove file Rests. BUT: Look in the List of the Objects that will be deleted before You delete them! Then install the 580 Driver with:
sudo apt install nvidia-driver-580 nvidia-dkms-580
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Hello, my videocard is an old GTX 1070, it worked out of the box until i selected an updated driver from the software updates. i tried almost all i was able to find, on web, on youtube, some solution gave errors, other simply did nothing at all.
i'm now trying your solution just now. ATM is the one that is downloading lots of data. i suppose i have to reboot when it finish...
[EDIT]
OMG it worked!!! i can't belive! you're my hero, it was two days of typing commands to try to revive it!
Thank you so much!!
almost forgot it run in X11, what's the difference?
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Good to hear that it works now.
X11 and Wayland are Display Protocols. Wayland is relatively new but depending on the Implementation in the Desktop Environment not so reliable. X11 is older but more reliable. And because zorin 17 uses an older Gnome Version, the Wayland Experience isn't so good - especially in Combination with Nvidia Cards. So, there it is better to use X11.
When Zorin 18 with Gnome 46 as Base will come, it should be better, but if it really is, we will see.
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