Completely unusable in Ubuntu 20.04

[peddanet]

For me one (bad) solution here works, I tried to describe it here as far as I have experienced it, my external monitors now worked:

https://askubuntu.com/questions/1358...-2021-after-up

But that means going back to kernel v5.4 (probably also any kernel up to v5.5) and fix it there. You do not have to follow my steps to go to Ubuntu 21.04. At least I think this was only party of my way.

The problem is that the sources of evdi has slightly changed to support modern kernels up to v5.13. Some pointer prototypes changed, But that would mean that just compiling and installing the new evdi driver would fix it for the new kernel >v5.11. But for my experiences that is not enough. External monitors are then detected but system freezes immediately after login. So I guess the DisplayLink App is somehow involved and must comply to the evdi interface.

Is there any way to get to this sources to just fix this quicker?