Comment 34 for bug 1842865

sudo apt build-dep linux - Reading package lists ... Done
E: You must fill out sources.list by putting the source package URIs of the source packages

It’s hard for me to complete all the steps that you described. I can say that the computer works well with the 4.15 kernel. With kernel 5.0 is bad. I will also test the 4.18 kernel and write to you.