NVIDIA driver issues++

[scaru]

Heyo, I'm all new to Kubuntu and Linux. I installed Kubuntu (minimal) on my pc just a few days ago, and it did not take long before I ran into some issues:
(1) My monitor will freeze or go blank, and I cannot seem to figure out what the problem is; thus, I end up doing a reboot every time. I think it might be because of my drivers

(2) I tried to follow some instructions on updating my drivers (because I currently use the Nouveau display driver,) but I ended up with a blank screen, and again I could not for the life of me fix it, nor return to the original driver. No reboot could sort it out, so I decided to reinstall Kubuntu.. I am now terrified of touching any of the drivers..

(3) Last thing, I cannot seem to properly install or launch the Waterfox web browser. I did install it by the use of the terminal, but I keep getting an error when I try to launch it..

I really want to like Kubuntu, because I can see how it's better than Windows OS, but it's tiring when you are new to it all and you don't know what youre doing..

Any help is most appreciated. Thanks

OS version: Kubuntu 26.04 LTS
KDE plasma version: 6.6.5
KDE frameworks version: 6.24.0
Qt version: 6.10.2
Kernel version: 7.0.0-28-generic (64-bit)
Graphics platform: Wayland

Processors: 12xAMD Ryzen 5 9600X 6-core
Memory: 16 GiB of RAM
Graphics processor 1: NVIDIA GeForce RTX 5060 Ti (discrete)
Graphics processor 2: AMD Ryzen 5 9600X 6-core (integrated)
Manufacturer: ASUS

Kubuntu is the only OS on my pc

[claydoh]

More details would be needed:

I tried to follow some instructions on updating my drivers

From where?
You should only need to use the Driver Manager (look in System Settings). It should offer a recommended driver/version for your card.

I did install it by the use of the terminal, but I keep getting an error when I try to launch it..

What was the exact error?
How exactly did you install it?

[scaru]

I used the driver manager, tried a couple different ones, but they both messed with my monitor.
I looked at different sources, everything from forums to youtube, to you name it. They all recommended the same thing. I later read a forum comment that said: "Standard proprietary drivers (nvidia-driver-580) may not work with this gpu [my RTX 5060Ti]. You must specifically install the "open" variant (nvidia-driver-580-open)..." So I don't know what to do now, and I do not see anything that says recommended. I'm currently using my windows PC, because my Kubunutu OS keeps freezing my monitor or it goes blank..

I copied this from the flathub github: net.waterfox.waterfox. I can copy paste my crash log if needed, but the error message says: "Application crash. /app/opt/waterfox/waterfox/ (part of Waterfox) has encountered a fatal error and was closed."

[skyfishgoo]

run ubuntu-drivers devices in a terminal and it will list the drivers and recommend one of them to you (don't know why this recommendation does not show up in device drivers).

then go to device drivers in the settings and choose that exact same driver from the list.

if that still gives you issues then i would start looking at your hardware, and perhaps try a different cable first or connection type.

you can always back out of a botched nvidia install by issuing the following:

sudo apt update
sudo apt purge *nvidia*
sudo apt autoremove
reboot​

which should bring you back to the kernel driver which is good enough for the desktop to work.