Nvidia Driver Snarl After Discover update

[petrux]

Upon rebooting after a big Discover update on 24.04, including the kernel and a host of Nvidia packages (more than one driver?), the display is now a low resolution 1024 single screen (I have 2). The Driver Manager window in System Settings is now grayed out, and the two listed drivers, Nvidia 470 and Nouveau are not accessible. Instead, there is a third "Continue using manually installed driver" (Graphics Processor: llvmpipe) as the only option.

From a screen capture during shutdown, and system log:

Starting colord.service - Manage, *stall and Generate Color Profiles...
OK ] Finished plymouth-quit-service - Terminate Plumouth Boot Screen.
NVRM: The NVIDIA GeForce GTX 770 GPU installed in this system is
NVRM: supported through the NVIDIA 470.xx Legacy drivers. Please
NVRM: visit http://www.nvidia.com/object/unix.html for more
NVRM: information. The 535.309.01 NVIDIA driver will ignore
NVRM: this GPU. Continuing probe...
NVRM: No NVIDIA GPU found.

I’ve been using the Nouveau driver for a very long time and really just want it back. I don’t need the Nvidia 470 driver at this time, but don’t mind if its available.
I did

sudo apt update
sudo apt full-upgrade
sudo apt install xserver-xorg-video-nouveau

Which went fine since all was already updated and Nouveau installed, but it did not register in the Driver Manager upon reboot.

The Nvidia 470 driver shows up with a grep, and there also seems to be a Nvidia 535 installed – could that be the problem?

I’m at a loss on how to proceed as I don’t know what’s going on and don’t want to make a bigger problem.
I'd appreciate any insights...

[Schwarzer Kater]

Well, like it says in your screen capture:
only the 470 driver supports your graphics card and the 570 one ignores your GPU…


First make sure the nouveau driver is installed.
Then to remove everything NVIDIA try
sudo apt purge nvidia-*
in the Konsole terminal emulator and reboot.
The nouveau driver should be used automatically afterwards.
You could then also reinstall the 470 series driver, if you wish.

If you want to test first what will be removed, you can do so by
sudo apt purge --dry-run nvidia-*

No guarantees - as always with NVIDIA…