Well it's ok, it gives me an opportunity to learn and get things right.
Thanks again for your help btw.
If I can get my install process to be faster (install scripts, a few config
files here and there, encrypting /boot, setting a few sepcific programs), a
new install might take less time than trying to solve a specific problem if
it takes, say, more than an hour without results.
I don't know what's best, I'm still experimenting here.
Thankfully, this problem concerns my secondary PC, so it's annoying, but
isn't much of a big deal.