[SOLVED] Video very sluggish after latest update for ZORIN 17.3

So, You are on Kernel 6.8 now, yes?

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Can you click on "other options" when booting and select a different, older kernel?

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yes
Linux 6.8.0-59-generic #61~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 15 17:03:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

tried selecting an older kernel, stays at black screen at boot

If you did not install Nvidia driver using DKMS (Dynamic Kernel Module Support) then a kernel upgrade may not tie the Nvidia driver modules.
Have you tried purging the driver, then reinstalling using DKMS?

@Ponce-De-Leon happened to just post a how to elsewhere:

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i did not try that method, but did switch and apply a few different drivers via Software updater,
i will attempt this next

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Same result unfortunately..

Oof, that is a bit of an older card.
Are you booting with nomodeset grub parameter?
Which Nvidia driver are you using?

Oof, that is a bit of an older card. > Yep it is lol !

Are you booting with nomodeset grub parameter?
not sure to be honest would have to know how to chk for that.

Which Nvidia driver are you using?
what was working before the update was 570.144 which is in place now,
tried 550/565/470/ and a few more

You can set a grub parameter in the grub file:

sudo -i

Launch file manager
Core:

nautilus

Lite:

thunar

Navigate to /etc/default/ directory and open the Grub file with right click > Open with > Text editor

Or all in terminal:

sudo nano /etc/default/grub

Move to the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" and add the parameter, separate from the other two parameters with a space:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"

Save the file if using text editor.
If using nano in terminal, tap ctl+o to overwrite, then tap enter key to save current configuration. Tap ctl+x to exit the editor.

In terminal now, run:

sudo update grub

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Went out and bought a new system today ! will be ready in a few days.

anyway, did a fresh install on my existing system as this issue is really bothering me,
I use BattleNet via LUTRIS and when i perform the command to install the Nvidia / Vulkan drivers the stuttering laggy video starts on restart

sudo add-apt-repository ppa:graphics-drivers/ppa && sudo dpkg --add-architecture i386 && sudo apt update && sudo apt install -y nvidia-driver-535 libvulkan1 libvulkan1:i386

I replace the 535 for 570 and as soon as i reboot the machine the video is laggy again, so this is breaking an otherwise updated fresh install.

UPDATE:
I ended up by-passing all the stuff related to LUTRIS etc, and just installed battlenet via STEAM - all issues solved.

( until the next kernel update ) :sweat_smile: