How to solve recurrent resolution issue on Ubuntu 22.04?

I am using Ubuntu 22.04 on a machine that has (based on lspci -v): VGA compatible controller: NVIDIA Corp. GK208B [GeForce GT 730]..., although on the system ABOUT the graphics shows as llvmpipe (LLVM 15.0.6, 256 bits).

The resolution should be 1920x1080 but the screen does not have this resolutoin. I solve a first issue of this kind with the command sudo ubuntu-drivers autoinstall; sudo apt install nvidia-driver-470. I solved a second issue of this kind, on the same machine, with the same command, and a third issue as well.

The it happened again, but this time the command did not work. To note that the drivers are already installed. I tried to install a newer driver with sudo ubuntu-drivers install nvidia:525 but it did not work.

I tried to force the resolution by changing the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1920x1080" on /etc/default/grub and reload with sudo update-grub. But it did not work. I also tried to reinstall xorg, as shown in this post, but did not work.

How can I force the resolution to 1920 x 1080 once and for all?

Why do I have the line llvmpipe (LLVM 15.0.6, 256 bits) instead of an NVIDIA one in system:About? Is that the problem? If yes, how do I change it?

Was the modification of grub a good approach?

Shall I follow this post about disabling secure boot? In my configuration, I have a fast boot, then a secure boot option #1 ubuntu (SATA6G_5:...) active and a SATA6G_5:... inactive. Shall I disable it? And if yes, how will the machine know where to find the booting files (for it will not know where to find SATS6G_5 anymore...)?

To note that I have other machines with Ubuntu 22.04, but this error occurs always and only on a specific machine. The machine that gives resolution problem has:

$ uname -a
Linux whopper 5.19.0-41-generic #42~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 18 17:40:00 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

One machine that does not give resolution problem has

$ uname -a
Linux behemoth 5.19.0-40-generic #41~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 31 16:00:14 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

Is there something wrong with the hardware of this machine? Perhaps either the video card or the mother board have a glitch?

Thank you

Some 48 hours earlier my perfectly workable 22.04 with no resolution issue,  got frozen on 1080 x 720 just out of blue.  Two days later after trying everything  I have found on the net, several times, hitting my head to the wall to relax myself between tries, I have finally decided to remove all Nvidia drivers. Solution for uninstalling Nvidia drivers also suggested reinstalling ubuntu-desktop.

sudo apt-get install ubuntu-desktop

reference site: How can I uninstall a nvidia driver completely ?

And that's it. After two days everything started working properly again. But what did I do wrong two days earlier??? Can't be out of blue. I'm too old, and smart enough, to believe in "out of blue" bulsh..* in IT world.

Well, some 72 howers earlier on an usual

sudo apt-get update && sudo apt-get upgrade

my 22.04 told me something like this

"The following packages were automatically installed and are no longer required:   dctrl-tools dkms libnvidia-cfg1-470 libnvidia-compute-470:i386   libnvidia-decode-470 libnvidia-decode-470:i386 libnvidia-egl-wayland1   libnvidia-encode-470 libnvidia-encode-470:i386 libnvidia-extra-470   libnvidia-fbc1-470 libnvidia-fbc1-470:i386 libnvidia-gl-470   libnvidia-ifr1-470 libnvidia-ifr1-470:i386 libxnvctrl0 pkg-config   screen-resolution-extra xserver-xorg-video-nvidia-470 Use 'sudo apt autoremove' to remove them."

And I did it! I just typed sudo apt autoremove. Shit happened after the first reboot 24 hours later when I completely lost this simple step from my mind.

All problems with freezing resolution I have found on the internet are somehow related to Nvidia. Looks like Nvidia has some issue with Ubuntu distribution :). When my headache, which is probably the result of relaxation, passes, I'll definitely try to freeze my monitor again. By just typing sudo apt autoremove

I think I solved it with sudo apt-get install update-manager-core, now the resulting is back as it should.