I upgraded to Fedora 41 from 39. The system rebooted and worked once and after rebooting then hung on startup
Press ESC to see the boot up messages.
What does the screen show?
Also as you boot up hold down shift to get the grub boot menu.
Then boot using the f39 kernel. Does the system boot up now?
That will make debugging the boot issue easier.
There is a problem with my ( NVIDIA kernel module missing. Falling back to nouveau)
As you could see from this photos, I don’t know what the problem?
You are not showing any error message in that screen shot.
Once you start typing grub stops its count down and waits for you to type return once you pick an entry in the menu. Seems you need to type return?
I would suggest you try with the 6.11.9 kernel first.
Try pressing ESC when you see the second screen.
You should then be able to messages that explain what the system is doing.
What do you see?
You have installed the rpmfusion nvidia drivers but they are failing to load. Evidenced by nvidia-fallback running and printing that error message.
You should be able to get to a login prompt by typing Ctrl-Alt-F3.
If that works we can investigate why your nvidia drivers have a problem.
Just to check did you setup secure signing key as the rpmfusion docs tell you to? This is needed is you have secure boot enabled in the BIOS.
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Ok, do you mean I could enter my user account? I chose fedora 41 system and change : rhgb quiet by systemd.unit=multi-user.target, and then I entered my account as you can see.
Great you have access to your system.
First update your system.
sudo dnf update --refresh
Try forcing a build of the nvidia drivers.
sudo akmods --force --rebuild
Do you see any error messgaes?
If so post here.
If not try rebooting and see if you can login to the GUI now.