I am new to linux and KDE. I just tried installing NVIDIA proprietary driver, and reboot. After I reboot, KDE neon would display grub as usual and I chose KDE neon, after that the loading appear and then my laptop manufacturer's name is showed and stuck right there, nothing happens, SDDM doesn't appear. My questions are why is this happening ? What should I do then if I want to install NVIDIA driver ? Is it true that that happens because the driver is not compatible with the kernel ? because I notice that KDE neon did a firmware update recently. Please help me, thanks in advance.
Some info :
OS : KDE neon User Edition 5.18 64bit
Kernel : 5.3.0-42-generic
CPU : Intel i5-4210U
GPU : NVIDIA Geforce 920M
Driver that I've tried : nvidia-390 and nvidia-440
Please let me know if I have to provide another information, thank you. sorry for the broken english too.