Nvidia Geforce 820M GPU problem on mainly ubuntu-based distros

Actually, nvidia driver support on especially Ubuntu is quite good. The Geforce 820M however is quite a strange GPU. There exists multiple devices under the name of 820M. One of them is using a GF117 chip which is based on the Fermi architecture. There however also seems to be a variant that is based on the Kepler architecture using a GK107 chip which is called GTX 820M. The X555LDB seems to be using the older GF117 chip which is not supported by the latest nvidia drivers anymore (it was dropped around 2018). The latest driver that supports Fermi is either 430.40 or 390.144. You might have more luck switching to the open-source driver ("nouveau") which should support Fermi quite well.