I'm running 64 bit Zorin OS 17.3 Core, graphics uses a Quadro k600, which should use the 470 driver listed above and until about half an hour ago it did
The 470 driver is installed according to "apt list nvidia-driver-470" Listing... Done
nvidia-driver-470/jammy-updates,now 470.256.02-0ubuntu0.22.04.5 amd64 [installed]
N: There are 2 additional versions. Please use the '-a' switch to see them.
I'm not brilliant at linux, i've used Zorin for a few years & never really had to look at the command line much, so please be gentle
Tried "sudo apt install nvidia-driver-470" & got the following
*Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
nvidia-driver-470 is already the newest version (470.256.02-0ubuntu0.22.04.5).
The following packages were automatically installed and are no longer required:
libfwupdplugin5 libgcab-1.0-0 libnvidia-extra-470 libsmbios-c2 lp-solve
nvidia-compute-utils-470 nvidia-utils-470 xserver-xorg-video-nvidia-470
Use 'sudo apt autoremove' to remove them.
0 to upgrade, 0 to newly install, 0 to remove and 2 not to upgrade.
*
So I rebooted, system looked the same
I ran the system updater and all the Nvidia drivers are still greyed out
The system update likely brought a newer kernel that has dropped support for the for 470. So the installed driver and modules are not seen by the kernel.
Rebooting and pulling the Grub Menu up - selecting Advanced options for Zorin and then selecting the Zorin on... earlier kernel to boot from is the swiftest test.
I looked at Nvidia's Website and for this Card, You can use the 470 Driver. The interesting Thing, I saw now here: They only offer the -server Driver.
When You now want use the 390 Driver, You would have to install an older Kernel because the 390 Driver doesn't work with the 6.8 Kernel. Do You want do that?
No, when You stay on the older Kernel, that shouldn't happen. Of Course 100% Guarantee isn't possible. You would install the older Kernel and then the Nvidia Driver, but via Terminal. There we can with a Command installing a dkms Package which is for Kernel Updates. That sets up the Driver when a Kernel update comes.
When I installed Zorin I told it to wipe the disk & as I only had Zorin on the machine I never tried to use grub
I've checked around and for non uefi systems i press the left shift key on power up & keep it pressed until I see the grub menu, for uefi systems I press esc
Checking in the bios this is a non uefi system
But having power cycled the system a few times neither left shift or esc get me into grub, I even tried right shift in case it was a typo with no joy