Just did the latest update. Now I have a resolution of 1024x768 instead of the 3840x2160 of my Dell monitor.
The Display Configuration report the monitor as none-1.
I have a Nvidia RTX4060 driver and have had problems before with the default installation of the nouveau driver not (yet?) working with this video card family.
How do i find out what driver is in use and if its not the Nvidia driver then how do i change it?
This upgrade installed new headers so I assume that may be the problem.
The headers are not the problem they are part of the solution. They are needed for re-building the nVidia driver for the new kernel that got installed when they did, they are a matched set of packages. You need to search on rebuilding the drivers, perhaps a apt install --reinstall nvidia-dkms. Actually looks like it could be along the lines of nvidia-kernel-dkms as the name not certain on it as it has been literally a decade or more since I last installed it, 2008 if memory serves me when I owned that 8800gt. Below is the output of a search on it.
root@8400:~# apt-cache search nvidia dkms
bbswitch-dkms - Interface for toggling the power on NVIDIA Optimus video cards (dkms)
nvidia-open-kernel-dkms - NVIDIA open kernel module DKMS source
nvidia-open-kernel-source - NVIDIA open kernel module source
nvidia-fs-dkms - NVIDIA file-system - nvidia-fs.ko kernel driver
libcuda1 - NVIDIA CUDA Driver Library
nvidia-driver - NVIDIA metapackage
nvidia-kernel-dkms - NVIDIA binary kernel module DKMS source
nvidia-kernel-source - NVIDIA binary kernel module source
nvidia-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver
xserver-xorg-video-nvidia - NVIDIA binary Xorg driver
libnvidia-tesla-cuda1 - NVIDIA CUDA Driver Library (Tesla version)
nvidia-tesla-driver - NVIDIA metapackage (Tesla version)
nvidia-tesla-kernel-dkms - NVIDIA binary kernel module DKMS source (Tesla version)
nvidia-tesla-kernel-source - NVIDIA binary kernel module source (Tesla version)
nvidia-tesla-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (Tesla version)
xserver-xorg-video-nvidia-tesla - NVIDIA binary Xorg driver (Tesla version)
libnvidia-legacy-340xx-cuda1 - NVIDIA CUDA Driver Library (340xx legacy version)
nvidia-legacy-340xx-driver - NVIDIA metapackage (340xx legacy version)
nvidia-legacy-340xx-kernel-dkms - NVIDIA binary kernel module DKMS source (340xx legacy version)
nvidia-legacy-340xx-kernel-source - NVIDIA binary kernel module source (340xx legacy version)
nvidia-legacy-340xx-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (340xx legacy)
xserver-xorg-video-nvidia-legacy-340xx - NVIDIA binary Xorg driver (340xx legacy version)
libnvidia-legacy-390xx-cuda1 - NVIDIA CUDA Driver Library (390xx legacy version)
nvidia-legacy-390xx-driver - NVIDIA metapackage (390xx legacy version)
nvidia-legacy-390xx-kernel-dkms - NVIDIA binary kernel module DKMS source (390xx legacy version)
nvidia-legacy-390xx-kernel-source - NVIDIA binary kernel module source (390xx legacy version)
nvidia-legacy-390xx-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (390xx legacy)
xserver-xorg-video-nvidia-legacy-390xx - NVIDIA binary Xorg driver (390xx legacy version)
libnvidia-tesla-418-cuda1 - NVIDIA CUDA Driver Library (Tesla 418 version)
nvidia-tesla-418-driver - NVIDIA metapackage (Tesla 418 version)
nvidia-tesla-418-kernel-dkms - NVIDIA binary kernel module DKMS source (Tesla 418 version)
nvidia-tesla-418-kernel-source - NVIDIA binary kernel module source (Tesla 418 version)
nvidia-tesla-418-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (Tesla 418)
xserver-xorg-video-nvidia-tesla-418 - NVIDIA binary Xorg driver (Tesla 418 version)
libnvidia-tesla-450-cuda1 - NVIDIA CUDA Driver Library (Tesla 450 version)
nvidia-tesla-450-driver - NVIDIA metapackage (Tesla 450 version)
nvidia-tesla-450-kernel-dkms - NVIDIA binary kernel module DKMS source (Tesla 450 version)
nvidia-tesla-450-kernel-source - NVIDIA binary kernel module source (Tesla 450 version)
nvidia-tesla-450-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (Tesla 450)
xserver-xorg-video-nvidia-tesla-450 - NVIDIA binary Xorg driver (Tesla 450 version)
libnvidia-tesla-460-cuda1 - NVIDIA CUDA Driver Library (Tesla 460 version)
nvidia-tesla-460-driver - NVIDIA metapackage (Tesla 460 version)
nvidia-tesla-460-kernel-dkms - NVIDIA binary kernel module DKMS source (Tesla 460 version)
nvidia-tesla-460-kernel-source - NVIDIA binary kernel module source (Tesla 460 version)
nvidia-tesla-460-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (Tesla 460)
xserver-xorg-video-nvidia-tesla-460 - NVIDIA binary Xorg driver (Tesla 460 version)
libnvidia-tesla-470-cuda1 - NVIDIA CUDA Driver Library (Tesla 470 version)
nvidia-tesla-470-driver - NVIDIA metapackage (Tesla 470 version)
nvidia-tesla-470-kernel-dkms - NVIDIA binary kernel module DKMS source (Tesla 470 version)
nvidia-tesla-470-kernel-source - NVIDIA binary kernel module source (Tesla 470 version)
nvidia-tesla-470-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (Tesla 470)
xserver-xorg-video-nvidia-tesla-470 - NVIDIA binary Xorg driver (Tesla 470 version)
libnvidia-tesla-535-cuda1 - NVIDIA CUDA Driver Library (Tesla 535 version)
nvidia-tesla-535-driver - NVIDIA metapackage (Tesla 535 version)
nvidia-tesla-535-kernel-dkms - NVIDIA binary kernel module DKMS source (Tesla 535 version)
nvidia-tesla-535-kernel-source - NVIDIA binary kernel module source (Tesla 535 version)
nvidia-tesla-535-vdpau-driver - Video Decode and Presentation API for Unix - NVIDIA driver (Tesla 535)
xserver-xorg-video-nvidia-tesla-535 - NVIDIA binary Xorg driver (Tesla 535 version)
Use apt list --installed |grep nvida to see what is already installed of look through the list above it it got removed to see if any of it looks familiar. With any luck someone with more current knowledge with pipeup and give you heads up on the package needed.
Thank you for the quick reply @JohnBrown
I sort of understand what you said.
The original Nvidia drivers were loaded with the ubuntu command line “sudo ubuntu-drivers install” which I assume builds the kernal module.
Unfortunately that command does not have an uninstall, or reinstall or an update.
I suspect the update probably didn’t do the rebuild step as the drivers were probably not changed but maybe some dependencies were.
I used “sudo pkcon update” and that did the deed and fixed everything.
You are welcome, good to see you got it sorted.