nvidia driver disappeared

[#&thj^%]

Forgot... nvidia-smi is part of package 'nvidia-utils-525' and...

On reboot, ensure that the SecureBoot setting is set to 'disabled'. If enabled, that will cause the driver to have problems with some people with signing issues with dkms.

+1 To the above
And the OP is using a Wayland session, which is horrible for Nvidia drivers
@guine can you login to a x11 session first.

apt policy xwayland
xwayland:
  Installed: (none)
  Candidate: 2:22.1.8-1ubuntu1
  Version table:
     2:22.1.8-1ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu lunar/main amd64 Packages

[guine]

When trying to install nvidia I kept getting this message

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
nvidia-driver-525 is already the newest version (525.125.06-0ubuntu0.23.04.1).
nvidia-dkms-525 is already the newest version (525.125.06-0ubuntu0.23.04.1).
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

I decided to try the whole purge reboot install reboot process over again and was still getting them same error, after a couple more reboots(once where my wireless didn't want to show up but that fixed on its own with another restart) and after the last restart I tried the install again with the same message so I tried launching darktable just to see what happened and it gave me a message that it found a gpu and seems to be rendering highly processed images faster. I did notice in one of the restarts that the system had switched back to wayland instead of x11 so I switched it back to x11. I'm wondering if my computer had just switched back to wayland without me noticing on a reboot after a recent update because darktable had been running slow(although claiming it found my gpu) since an update a computer update week or 2 ago that couldve caused everything to slow down.

[#&thj^%]

I've heard all kinds of reasons in my journey with Wayland gets set without a user's knowledge with "Updates"
I just think now Ubuntu sets Wayland as default OTB we might have to check that once in while.
So are you now all good now?
How does your "nvidia-smi" now look?

[guine]

I got this

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 525.125.06   Driver Version: 525.125.06   CUDA Version: 12.0     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  NVIDIA GeForce ...  Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   58C    P0    N/A /  35W |      5MiB /  4096MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      7598      G   /usr/lib/xorg/Xorg                  4MiB |
+-----------------------------------------------------------------------------+

If thats looking like its supposed to I think it may be working correctly. I tried doing a quick edit in darktable using some of the more intensive modules and doing some out of order for the pixel pipe to test its speed and its definitely running faster now.
Thanks

[#&thj^%]

Yes, Text Book on the look...Good Job!
It was fun Thank You

[guine]

Sounds good, thanks again for the help.